The Audi S4 is the high performance variant of Audi's compact executive carA4. The original Audi S4, built from 1991 until 1994, was a performance-oriented version of Audi's 100saloon/sedan. All subsequent S4s since 1997 have been based on the Audi A4; and as the A4 has evolved from one generation to the next, so has the S4.
Like its regular A4 counterpart, all S4 variants have had longitudinally oriented, front-mounted engines. All versions of the S4 have their transmission mounted immediately at the rear of the engine in a longitudinal orientation, in the form of a transaxle, and like all Audi "S" cars, are only available as standard with Audi's quattro all-wheel drive (AWD) system, using a Torsen-based centre differential system.[1] A more powerful internal combustion engine, larger upgraded brakes, firmer suspension, larger wheels, and distinctive sheetmetal, styling clues and badging have always been amongst the many upgrades the S4 receives over its mainstream 100 and A4 siblings. In markets where the even higher-performance Audi RS 4 is not offered, the S4 is the top-of-the-line trim of the A4 family.[2][3]
All versions of the S4 have been manufactured at Audi's plant in Ingolstadt, Germany; they are, or have been available as a four-door five-seat saloon and a five-door five-seat Avant (Audi's name for an estate car/station wagon) body styles since the model's inception in 1991. A two-door four-seat Cabriolet (convertible) S4 variant was introduced as part of the B6 and B7 generation A4 lineups. The B8 Cabriolet has now been built off the A5 coupe body style and the "S" variant is marketed under the Audi S5 nameplate.
Factory production of the original Audi S4 (Typ 4A), usually known as Audi 100 S4, began in August 1991 to serve as the performance version of the newly updated, C4 platform, 100-series four-door, five-seat saloon. First shown to the public at the May 1991 Barcelona Show, it was designed to replace the outgoing C3-based Audi 200 turbo quattro 20V and retained its five-cylinder engine.[6] The 200, Audi's first true sports-saloon, had been discontinued at the end of 1990.[7][8] Being the first S4 model from Audi, it is commonly referred to as the Ur-S4, derived from the German: Ursprünglich augmentive word (meaning: original).
Audi S4 Avant (C4)
Audi mildly updated the C4-based model line in 1994 and dropped the 100 nomenclature; all variants of the former Audi 100 line were now re-badged as the Audi A6. In line with the switch in model name, Audi temporarily discontinued the use of the S4 name and began selling an updated but fundamentally identical version of the car, based on the "new" A6 and badged as S6. Despite the change in name, differences between the outgoing S4 and incoming S6 were cosmetic and very light.
A more powerful, more expensive and more exclusive variant known first as the S4 Plus and later as the S6 Plus was available from October 1992 through to July 1994.[1] Built in very small numbers, the "Plus" models featured numerous performance enhancing upgrades; including the use of Audi's 4.2-litre V8 engine in place of the then current inline-five engine.
An all-new C5-based Audi A6 debuted for 1997, after which the S4 and S6 became distinctly separate models based on very different platforms.
The C4 variant S4 ended factory production after less than three years in July 1994.[1]
One of its most renowned owners was Ayrton Senna who owned a silver Avant,[9] not least because he was the Audi distributor for Brazil.
C4 powertrain
In standard form, the powertrain detail of the C4-based S4 was available with only one engine, a single turbocharged and intercooled version of Audi's 2.2-litre 20-valveinline five-cylinder engine This displaced 2,226 cubic centimetres (135.8cuin) and was equipped with an advanced BoschMotronic electronic engine control unit (ECU).[1] This engine (parts code prefix: 034, identification code: AAN), developed a motive power output of 169kW (230PS; 227bhp) at 5,900revolutions per minute (rpm) and 350 newton-metres (258lbf⋅ft) of torque 1,950rpm.[1] This powerplant made it rather powerful by contemporary standards, and the vehicle with five-speed manual transmission was able to accelerate from standstill to 100 kilometres per hour (62.1mph) in 6.2seconds.
Both five- and six-speed manual transmissions (parts code prefix: 01E, identification codes: five-speed: CBD, CET, six-speed: CBL, CMG) were offered to European customers, but a five-speed manual was the only transmission available in North America; a four-speed automatic transmission (parts code prefix: 01F, identification code: CBF) was available as an option worldwide.[1] Front and rear axle final drive ratio is either 4.111 or 3.889 (dependent on transmission type), and the rear axle (parts code prefix: 017, identification codes: AAT, AET) uses a driver-selectable electro-pneumatic-mechanical switchable diff lock.[1]
Audi's quattro four-wheel-drive system was standard on the C4 S4/S6; a first-generation Torsen-based system which used the "T-1" automatically biasing centre differential (ATB) was used on vehicles equipped with manual transmissions, while a transfer box based system was used on vehicles equipped with an automatic transmission.[1]
S4/S6 "Plus" models equipped with a 4.2-litre 206 kilowatts (280PS; 276bhp) all-aluminium alloy V8 engine (parts code prefix: 077, identification code: ABH) became available to European customers as an option from October 1992, only with the six-speed manual gearbox, in either saloon or Avant body styles.[1]
C4 steering, brakes, wheels & tires
All C4 S4s' came equipped as standard with a conventional fixed-assistance rack and pinion power assisted steering (PAS) system. An electronically controlled 'servotronic' system, which varied the level of assistance in accordance with the road speed, was available as an option.[1]
There were two different types of high performance brake systems on offer for the C4 S4.[1] All S4s' initially had 310mm (12.20in) diameter by 25mm (0.984in) thick, radially ventilated disc brakes up front, each with an ATE single-piston sliding caliper inside a 'UFO' styled bell-shaped disc. With the introduction of the V8 engine, a new front brake setup became standard; again the discs used radial ventilation, but these front discs were now sized at 314mm (12.36in) by 30mm (1.181in) - with a conventionally mounted Lucas-Girling caliper in an external position over the disc. US models had smaller 276mm (10.87in) discs. The rear brakes, 269mm (10.59in) by 20mm (0.787in) and also radially ventilated - remained the same throughout C4 production; they used a Lucas-Girling single-piston sliding caliper with an integrated cable-actuated handbrake mechanism. A Bosch three-channel operation (four-channel sensing) Anti-lock Braking System (ABS) with a mechanical load sensing valve for the rear brakes was standard throughout production.[1]
For wheel options, the standard five-arm "Fuchs" forged alloy wheels were 8.0Jx16H2ET40, and were fitted with 225/50R16 sized tyres. Several other tyre and wheel designs were optionally available: a 7.5Jx15H2ET40 six-spoke with 215/60R15 tyres, an 8.0Jx16H2ET40 five-double-spoke, a 7.5Jx16H2ET35 six spoke "Avus", and an 8.0Jx17H2ET40 ten-spoke.[1]
The second generation S4 (Type 8D), also known as the Audi S4 quattro debuted in 1997, with factory production commencing October 1997,[1] as part of the facelifted B5 platformAudi A4 line-up, although it was not available in North America until late 1999.
In addition to the saloon (sedan), an estate version (wagon)–the Audi S4 Avant–was introduced into the lineup from 1998. Production of the B5 S4 ceased in September 2001,[1] although it was still sold together with the next B6 platform generation through 2002 in North America. Examples produced June 2001 to end of production are 2002 Model Year cars, the 10th digit of the VIN being the number "2".
Several years after it was sold new, the B5 S4 remains a potent enthusiast car, and as featured in the December 2007 issue of Sport Compact Car magazine, a heavily modified, Torque Factory tuned S4 won a comparison test against several other extreme performance cars.[10]
B5 powertrain
The powertrain details[1] of the B5 S4 feature a 2.7-litre twin-turbo ('biturbo') 90° third-generation V6 engine (parts code prefix: 078, identification codes: AGB, AZB, APB). Details of the powerplant include a cast ironcylinder block with two lightweight aluminium alloy cylinder heads. The valvetrain includes 30 valves (five valves per cylinder),[11][12] twin hybrid-driven (timing belt and roller chain) double overhead camshafts and variable valve timing for the inlet valves. The intake air is pressurized by two parallel water-cooled BorgWarner K03-series turbochargers; the charged air is cooled by two side-mounted air-to-air intercoolers (SMICs). It displaces 2,671 cubic centimetres (163.0cuin), and is rated to produce a motive power output of 195kW (265PS; 261bhp) at 5,800rpm, and generates 400N⋅m (295lbf⋅ft) of torque at 1,850rpm. Engine management was by way of a BoschMotronic ME7.1 (7.0 in North America) electronic engine control unit (ECU), and helped it meet the European EU-3D emissions standard. In all US-market cars, the engine was detuned to meet US emissions regulations; output was reduced to 184kW (250PS; 247hp) and 350N⋅m (258lbf⋅ft) (identification code: APB).
As in the previous S4, a six-speed C90 manual transmission (parts code prefix: 01E, identification code: DSY, gear ratios: 1st: 3.500, 2nd: 1.889, 3rd: 1.231, 4th: 0.967, 5th: 0.806, 6th: 0.684) was standard equipment, as was the Torsen T-2 quattro permanent all-wheel drive system. Final drive (parts code prefix: 01H, identification code: DQA) ratio is 4.111. A five-speed ZF5HP19tiptronicautomatic transmission (parts code prefix: 01V) became available for the first time as an option.[1]
The B5 S4 claims acceleration from 0 to 100km/h (0.0 to 62.1mph) in 5.7seconds, and has an electronically limited top speed of 250km/h (155.3mph), making it both the quickest saloon/sedan in the Audi model line, and among the quickest saloon/sedans in the world at that time.[citation needed]
The B5 S4 brake system[1] consisted of radially ventilated discs, 321mm (12.64in) in diameter by 30mm (1.18in) thick up front, and 256mm (10.08in) by 22mm (0.87in) at the rear. Two-piston Lucas HP2 brake calipers at the front (with four pads per caliper), with Lucas single-piston sliding brake calipers at the rear. A Bosch ABS5.3 four-channel Anti-lock Braking System (with Electronic Brakeforce Distribution (EBD) and Electronic Differential Lock (EDL) - and later with ESP or Electronic Stability Programme), coupled with a vacuum servo completed the system.
Standard wheels[1] were Audi's die-cast aluminium alloy six-arm 'Avus' 7.5Jx17H2ET45 wheels, fitted with 225/45ZR17 performance tyres.
B5 colors & optional equipment
Available exterior colors included Brilliant Black, Laser Red, Light Silver, Cactus Green, Santorin Blue, Hibiscus Red, Casablanca White, Pearlescent White, Imola Yellow (spicy mustard), and Nogaro Blue. The last two colors were exclusive to the S4 model. Interior leather was available in Onyx or Silver. Available options included:
Bose premium sound system
Audi Navigation System
6-disc CD changer
Hands free Motorola cellular telephone
Premium Package: Sunroof, HomeLink transmitter, Auto dimming mirrors
Enhanced Sport Package: Alcantara seat inserts, Silver aluminum belt line trim or Carbon Fibre trim (on late 2000-2001 models), Aluminum mirror housings (on 2001 & 2002 models)
The Sport Package replaced the wood-grain belt line trim with silver aluminum trim, and the wood grain finish around the shifter with black plastic. The Alcantara seat inserts were silver (on Onyx leather). With the black, white, or blue exteriors, the inserts were also available in blue Alcantara. On the early 2000 models, the Alcantara inserts in the rear seats did not fully extend forward to the front edge of the seat.
B5 motorsport
A motor racing version of the car achieved great success in the SpeedVision World Challenge with Michael Galati taking the 2001 SpeedVision GT title in a Champion Racing S4, winning four races, and helping Audi to its first Manufacturers' Championship.
The Audi Sport specification Champion A4 chassis included a B5 RS4 engine, and Alcon racing brake calipers (4 piston front and 2 piston rear calipers).
Don Istook, with Istook's Motorsports, built and campaigned several B5 S4's in first the Motorola Cup, and then the Grand Am Cup. The S4's were even raced by Istook's Motorsports in the Rolex GT category for several races to help fill the field. Of note, one of the S4's, racing against true GT cars, even ran as high as second place (in the rain) at Barber Motorsports Park.[citation needed] These S4's were built using existing S4, not RS4 engines, but used the B5 Audi RS4 K04 turbochargers.
2003–2005 S4 (B6) saloon (US)MY2005 Audi S4 (B6) Avant (US)Audi S4 Cabriolet (UK)
The third generation Audi S4 quattro (Type 8E— saloon: 8E2, Avant: 8E5, and Cabriolet: 8H7) debuted its saloon and Avant bodystyles in Europe in March 2003,[1] and appeared in North America slightly later.[when?] This was based on the latest Volkswagen Group B6 (PL46) platform used by the then current Audi B6 A4. Despite having moved to an entirely new platform, one of the S4's most publicised new features was its new engine - a 4.2-litre V8 engine. Following its initial launch of either a four-door five-seat saloon (sedan), or a five-door five-seat Avant (estate/wagon), it eventually became available in three bodystyles - and for the first time in the Audi 'S' car range, from February 2004, a two-door four-seat Cabriolet (convertible), Type 8H, was included in the model range.[13]
Official performance figures for standard discipline of sprinting from standstill to 100km/h (62.1mph) in the saloon with manual transmission are 5.6seconds (Avant 5.8s, Cabriolet 5.9s), however, a road test conducted by the American automotive magazine Motor Trend[14] indicated that it could go from a standstill to 60mph (96.6km/h) in less than 5seconds, and make it to 200km/h (124.3mph) in slightly over 20seconds, although doing this led to fuel consumption dipping into single digits. This was considerably worse than the earlier V6 models, leading to the addition of a $1,700 gas guzzler tax (combined 20.2 miles per US gallon (11.6L/100km; 24.3mpg‑imp)) for the six-speed manual sedan in the United States. Top speed is electronically limited to 250km/h (155.3mph).
The B6 S4 saloon and Avant variants ceased factory production in December 2004, with the Cabriolet ending twelve months later at December 2005.[1]
B6 powertrain
Replacing the 2.7-litre 'biturbo' V6 engine of the previous generation B5 S4, the new B6 S4 powertrain[1] gained an all-aluminium alloy 4.2-litre, 40 valve (five valves per cylinder) V8 engine (parts code prefix: 079.C, identification code: BBK), with flywheel-end chain-driven double overhead camshafts, roller-finger rocker armcam followers, and included variable inlet camshaft timing. It also used a strengthened alloy crankshaft bedplate for the five main bearings, and a two-part baffled oil sump, and a light-alloy variable intake manifold (VIM), containing the fractionally sequentially actuated fuel injectors. This petrol engine, based on the unit from the Audi A8, displaces 4,163 cubic centimetres (254.0cuin), and it produces a motive power output of 344PS (253kW; 339bhp) at 7,000rpm, and generates torque of 410N⋅m (302lbf⋅ft) at 3,500rpm, making it more powerful than the RS2 Avant, and nearly as powerful as the B5 RS4. Engine management was by way of a BoschMotronic ME7.1.1 electronic engine control unit (ECU), using a Bosch 'E-Gas' drive by wire electronic throttle, and powering eight individual spark coils with longlife quad-electrode Bosch spark plugs. Ignition timing is a mapped direct ignition, with cylinder-selective knock control with the aid of four knock sensors. The exhaust system includes vacuum-operated valves in the twin rear silencers (mufflers), finished with chrome plated tail-pipes.
Like its predecessors, the B6 S4 was standard with a Getrag six-speed (M6S) manual transmission (parts code prefix: 0A3, identification codes: FVD, HEP) (gear ratios - 1st: 3.667, 2nd: 2.050, 3rd: 1.462, 4th: 1.133, 5th: 0.919, 6th: 0.778),[1] with a 240mm (9.4in) single plate dry clutch, and Torsen T-2 quattro permanent four-wheel drive system. Final drive (parts code prefix: 01R, identification code: EXZ) ratios are 3.889,[1] giving a top gear road speed to engine revs ratio of 24.4 miles per hour (39.3km/h) per 1000rpm. From July 2003,[1] the ZF 6HP19tiptronicautomatic transmission (parts code prefix: 09L, identification codes: GUR, HHU) (ratios - 1st: 4.171, 2nd: 2.340, 3rd: 1.521, 4th: 1.143, 5th: 0.867, 6th: 0.691, with a final drive (identification code: GDF) ratio of 3.539) was included as an option.
Standard wheels[1] were 'Avus-III' die-cast aluminium alloy, 8.0Jx18H2ET45 in size, and fitted with 235/40 ZR18 95Y XL (eXtra Load) high performance tyres, with factory supplies being either Continental SportContact2 or Michelin PilotSport PS2.
B6 body & interior
Discrete lower door trims, along with the now trademark Audi 'S' model vertical-emphasis line grille, and solid aluminium (later replaced with plastic covered by aluminium) exterior door mirrors, and S4 badging front and rear are all that visually distinguish the S4 from its related A4 brethren. In the interior, front and rear Recaro seats (fronts fully electric with the option of heated seats), as well as S4 logos in the instrument panel and door sills complete the detail.
B7 (Typ 8E/8H, 2005–2009)
Motor vehicle
Fourth generation (B7/8E/8H)
Audi S4 Avant quattro in Sprint Blue with Avus-III alloy wheels (8ED, Europe)
Audi S4 Sedan quattro (8EC, North America)Audi S4 Cabriolet with optional 7-spoke alloy wheels (8HE, U.S.)Audi S4 Avant quattro (8ED, Europe)
The Audi B7 platform Audi S4 quattro, based on the Audi B7 A4, debuted in late 2004. Although Audi classifies it as a new car, the differences between it and the outgoing B6 S4 casually appear to be primarily cosmetic, and is still classified by the internal designation: Typ 8E (although with revised sub-designations - saloon: 8EC, Avant: 8ED, and Cabriolet: 8HE).[1] It has the same 4.2-litre V8 engine (identification code: BBK) as the B6 S4, producing a power output of 253kW (344PS; 339bhp) at 7,000rpm, and 410N⋅m (302lbf⋅ft) torque at 3,500rpm.
There are a few mechanical changes, such as revised springs and dampers and, from model year 2007, an updated Torsen T-3 automatically biasing centre differential, featuring a 'default' asymmetric 40:60 front-rear torque split on manual transmission models, along with the later Bosch ESP8.0 Electronic Stability Programme[1] and gloss black painted brake calipers.[1] The 'Avus-III' wheels now became an option, and were replaced by a standard offering 8.0Jx18inch 'S-design' 7-spoke forged alloy wheel.[1]
Bose sound system is now standard, whereas it was optional on the B6 S4, and an enhanced optional DVD-ROM-based RNS-E satellite navigation system replaces the previous CD-ROM-based RNS-D option.
The new trapezoidal single-frame grille, Bi-Xenonhigh-intensity discharge lamp (HID) headlamps, L-shaped tail-lamps, quad exhaust tail pipes, and discrete V8 badging below the side repeater indicators help distinguish the B7 from the previous B6 model.
Audi S4 25quattro
Audi "S4 25quattro" special edition (8EC)
In June 2005,[1] Audi announced a limited edition run of 250 special edition S4 saloon cars, celebrating 25 years of quattro four wheel drive. This exclusive model was called the Audi S4 25quattro. Available only in the United States, the exterior has unique front and rear bumpers, a carbon fibre boot lip spoiler and lower front splitter, a rear functional red tow hook, and a high gloss Phantom Black painted grille with the "quattro" emblem. 15-spoke DTM alloy wheels, along with optional dealer-fitted 'Audi four-rings' decals for the front doors complete the exterior makeover. Black and grey contrasting interior leathers, along with "quattro" embossed into the Recaro seats, together with a "1 of 250" exclusive quattro gear shift knob for the manual-only gearbox define the interior changes and act as a subtle reminder of the exclusivity that the limited numbers command.
On the mechanical side, the S4 25quattro was the second Audi, after the B7 RS4 to be fitted with the latest Torsen T-3 asymmetric ATB centre differential for its quattro permanent four-wheel drive system. Under normal grip conditions, this is set with a default rearwards torque distribution bias of 40:60 front to rear, and a maximum of 100% torque can automatically be apportioned to the rear axle (and up to 80% to the front) as conditions warrant. The final drive ratios are 3.889.
Audi S4 Sedan quattro (B8/8K, Australia)Audi S4 Avant (B8/8K, South Africa)
From November 2008, the fourth generation of the 'Audi S4 quattro'[15] (Typ 8K) entered factory production.[1] It is based on the Audi B8 A4,[16] built on the Volkswagen Group MLB/MLP platform. Unlike the previous B6 and B7 models, the new B8 version was only available as a four-door five-seat saloon (sedan), or a five-door five-seat Avant (estate/wagon). The sport-performance two-door four-seat Cabriolet (convertible) mantle is now taken by the Audi S5 Cabriolet and new Coupe. Unlike previous generations of the S4, only the sedan was imported to the United States and Canada.
The previous B6/B7 S4s were the top-of-the-line models in North America, ahead of the 3.2L V6 and 4-cylinder 2.0T A4s, and competed with the BMW E46 330 and E90 335 respectively. The 3.0 TFSI V6 engine replaced the 3.2-litre FSI V6 as the upgrade engine in the A4 and A6 lineups starting for 2009; both the 3.2-litre FSI and 3.0 TFSI were offered together until the end of the 2010 model year.[17] The 3.2L V6 engine is no longer offered in the A4 lineup from the 2011 model year onwards, so the recently introduced B8 S4 is now priced 9% lower than its V8 predecessors, and slots directly above the 4-cylinder 2.0T base model. The S4 now compares more closely with the BMW 335i.
Previously unavailable enthusiast driver aids were now optional, such as Audi's Sport Rear Differential, active steering and adaptive damping suspension (part of the Audi Drive Select Package). The front axle was moved by 6.1 inches to the front, which improved the weight distribution of the B8 Platform. Combined with the Sport Rear Differential Audi was able to greatly improve the weight balance and dynamics of the S4 over previous models.[18][19][20]
A new designed wheel was included on the B8 S4, an 8.5Jx18" '5-double-spoke S' design alloy wheel with 245/40ZR18 high performance tyres. Optional 19inch wheel and tyre packages were also available, sized at 8.5Jx19" alloy wheels with 255/35ZR19 tyres. LED tail lights were standard fitment, along with Audi's now-trademark LED daytime running lights at the front.
The S4 along with the other B8 models received a facelift in early 2012 for the European market and early 2013 for the Australasian market. This included a revised front-end with new headlights and grille, an updated interior, and upgraded MMI options. Mechanically, the facelift B8 (known colloquially as the B8.5) was upgraded with electromagnetic steering and a lighter crown gear center differential.
B8 powertrain
At the heart of the B8 S4 powertrain is an all-new, all aluminium-alloy 3.0-litre TFSI Supercharged (TFSI)V6 engine (parts code prefix: 06E, identification code: CAKA),[1] and like the rest of the B8 model range, now with Fuel Stratified Injection (FSI). This petrol engine displaces2,995 cubic centimetres (182.8cuin), and it is rated by Audi to a power output of 245kW (333PS; 329bhp) from 5,500 to 7,000rpm. Torque is rated at 440N⋅m (325lbf⋅ft) from 2,900 to 5,300rpm. This high power output is achieved by using forced induction– and specifically, an all-new Eaton 'Twin Vortices Series' (TVS) Roots-type positive displacement compressor.[21][22] This new supercharger features twin four-lobe rotors, which are axially twisted 160degrees. It is mounted on top of the engine, within the 'Vee', pumping air directly into the inlet manifold, and incorporates two separate water-cooledintercoolers. This new design of supercharger is said to reduce the noise, vibration, and harshness (NVH) of the engine.
This engine is mated to either a six-speed manual transmission (identification code: KMR)[1] or a seven-speed 'S tronic' DL501[23]dual clutch transmission (identification code: LHK),[1] the latter with steering wheel mounted paddle-shifters for tiptronic gear selection, which replaces the Tiptronic automatic transmissions found in the B6/B7 iterations. The 'Audi quattro Sports differential' fitted in the rear axle final drive unit is available as an option.
Acceleration from a standstill to 100km/h (62.1mph) takes 5.1seconds[24] for the saloon with manual gearbox, the Avant one tenth of a second slower at 5.2seconds. The same dash to 100km/h (62mph) in the saloon with S tronic takes 5.3seconds, and the Avant at 5.4seconds. The top speed is electronically limited to 250km/h (155.3mph). However, a comparison in the American automotive magazine Road & Track[25] showed the sprint from 0 to 60mph (97km/h) in 4.5 seconds for the 6-speed manual transmission. With figures like these, the B8 S4 accelerates more quickly than its V8-engined predecessors.[2] Audi of America claims that the version of the S4 achieves 28 highway miles per gallon, and a 0 to 60mph (96.6km/h) acceleration time of 4.9 seconds with the manual transmission[26] and 5.1 seconds with the S tronic.[27] Fuel consumption is rated at a combined 24.2 miles per US gallon (9.7L/100km; 29.1mpg‑imp).[24] Therefore, the B8 S4, unlike the V8-powered B6/7 models, avoids the US gas guzzler tax. The B8 S4's 3.0 TFSI engine also gets only 1 m.p.g. less than the base 2.0 TFSI engine.[28] This is one of the most important reasons for Audi to downsize their engines, while keeping the output equivalent better, by using forced-induction such as supercharging or turbocharging.[2]
The 3.0-litre TFSI Supercharged (TFSI)V6 engine is shared with the Audi S5 Cabriolet (though the 7-speed S Tronic is the sole transmission) and the 2013 Audi S5 Coupe. The 2012–2015 Audi A4 3.0 TFSI quattro has a lower-output version of this engine making 272 PS (200 kW; 268 hp) @4780-6500 and 400 N⋅m (295 lb⋅ft) @2150–4780.
Detuned versions of this engine making 310PS (228kW; 306hp) are found in the 2009-11 Audi A6 3.0 TFSI (C6) mated to a 6-speed Tiptronic automatic transmission, the 2012 Audi A6 3.0 TFSI (C7) and 2012 Audi A7 3.0 TFSI, the latter two which are paired with an 8-speed Tiptronic automatic.
Audi announced the B9 S4 in 2015, with the official unveiling of the European-spec model at the 2015 Frankfurt Motor Show. Noticeable changes to the B9 included a modern, more angular exterior, newly designed wheels, and a new turbocharged V6 engine co-developed by Porsche.[30] Unlike the pre-facelift B8 S4, the announced European-spec model is only available with an eight-speed torque converter automatic (ZF 8HP55a).
Audi S4 Avant quattro 3.0 TFSI (UK)Audi S4 Avant facelift (Germany)
The new model uses LED main-beam and LED daytime running lights as standard, alongside dynamic turn signals and LED tail-lights. Like other Audi models, the notable feature in the new S4 is Virtual Cockpit which has Classic Layout and Sports Layout in displaying speedometer and tachometer.
The B9 S4 features standard 18-inch 5 double-spoke wheels with summer tires, or optional 19-inch 5 V-spoke wheels.
The B9's brakes use multi-piston calipers, replacing the single-piston sliding calipers of earlier models. LED headlights are standard while a flat-bottomed steering wheel, "S" embossed seats, and quad tailpipes differentiate the S4 from the B9 A4.
B9 powertrain
The current generation S4 is powered by a 3.0 L V6 with petrol direct injection and a single twin-scroll turbo powering the EA839 engine with 354PS (260kW; 349hp) and 500N⋅m (369lbf⋅ft). The engine uses a hot inside V layout, which places the cylinder head exhaust ports, exhaust manifolds, and turbocharger inside the V of the engine; this is a similar arrangement to the twin-turbo V8 engines used in Audi's C7/C8 RS6 and RS7 (including C7 S6/S7).
As a result of the powertrain upgrades in the new S4, it now can accelerate from 0 to 60mph (97km/h) in 4.2 seconds.[31] It is electronically limited to a top speed of 155mph (249km/h).[32]
In European markets, the facelifted B9 S4 - launched in 2019 - is now powered by a 3.0-litre turbocharged diesel V6 with 347PS (255kW; 342hp) and 700N⋅m (516lbf⋅ft), mated to a ZF 8-speed torque converter automatic gearbox and all-wheel-drive. For outside of European markets, however, it still retains the 3.0-litre petrol turbo V6.
The Audi A6 is an executive car made by the German company Audi since 1994. Now in its fifth generation, the successor to the Audi 100 is manufactured in Neckarsulm, Germany, and is available in saloon and estate configurations, the latter marketed by Audi as the Avant. Audi's internal numbering treats the A6 as a continuation of the Audi 100 lineage, with the initial A6 designated as a member of the C4-series, followed by the C5, C6, C7, and the C8. The related Audi A7 is essentially a Sportback (liftback) version of the C7-series and C8-series A6 but is marketed under its own separate identity and model designation.
The Audi TT is a production front-engine, 2-door, 2+2 sports coupé and roadster, manufactured and marketed by Audi from 1998 to 2023 across three generations.
The Audi 80 is a compact executive car produced by the Audi subdivision of the Volkswagen Group across four generations from 1966 to 1996. It shared its platform with the Volkswagen Passat from 1973 to 1986 and was available as a saloon, and station wagon — the latter marketed by Audi as the Avant. The coupé and convertible models were not badged as members of the range, but used a derivative of the same platforms.
The Audi A3 is a subcompact executive/small family car (C-segment) manufactured and marketed by the German automaker Audi AG since September 1996, currently in its fourth generation.
The Audi A8 is a full-size luxury sedan manufactured and marketed by the German automaker Audi since 1994. Succeeding the Audi V8, and now in its fourth generation, the A8 has been offered with either front- or permanent all-wheel drive and in short- and long-wheelbase variants. The first two generations employed the Volkswagen Group D platform, with the current generation deriving from the MLB platform. After the original model's 1994 release, Audi released the second generation in late 2002, the third in late 2009, and the fourth and current iteration in 2017. Noted as the first mass-market car with an aluminium chassis, all A8 models have used this construction method co-developed with Alcoa and marketed as the Audi Space Frame.
The Audi A5 is a series of compact executive / grand touring coupé cars produced by the German automobile manufacturer Audi since June 2007. The A5 range additionally comprises the coupe, cabriolet, and "Sportback" version of the Audi A4 saloon and estate models.
The Audi A4 is a line of luxury compact executive cars produced since 1994 by the German car manufacturer Audi, a subsidiary of the Volkswagen Group. The A4 has been built in five generations and is based on the Volkswagen Group B platform. The first generation A4 succeeded the Audi 80. The automaker's internal numbering treats the A4 as a continuation of the Audi 80 lineage, with the initial A4 designated as the B5-series, followed by the B6, B7, B8, and the B9.
The Audi RS 6 is a high-performance variant of the Audi A6 range, produced by the high-performance subsidiary company Audi Sport GmbH, for its parent company Audi AG, a subsidiary of the Volkswagen Group, from 2002 onwards.
The Audi Q5 is a series of compact luxury crossover SUVs produced by the German luxury car manufacturer Audi from 2008. The original first-generation model was the third member of the B8 family to be released after the Audi A5 and fourth-generation A4, all being based on the Audi MLB platform. The second generation Q5 debuted in 2018 and shares the Audi MLB Evo platform with the corresponding B9 versions of the A4 and A5.
The Audi RS 4 is the high-performance variant of the Audi A4 range produced by Audi Sport GmbH for AUDI AG, a division of the Volkswagen Group. It sits above the Audi S4 as the fastest, most sports-focused car based on the A4's "B" automobile platform. The RS 4 was reintroduced in 2012, based on the A4 Avant instead of the sedan as did the original model.
The Audi S6 is the performance variant of the Audi A6, an executive car produced by German automaker Audi. It went on sale in 1994, shortly after the "A6" designation was introduced, replacing the "100" nameplate.
The Volkswagen Group B platform is a mid-size automobile platform from the Volkswagen Group. It has been used for saloon cars/sedans, estate cars/station wagon, and coupés - under the Volkswagen Passenger Cars, Audi, SEAT and Škoda marques.
The Audi Coupé is a liftback coupé version of the Audi 80, first shown in 1980. The bodywork was shared with the Audi Quattro. The second generation Coupé arrived in late 1988 and was based on the B3 Audi 80, albeit with a different suspension. The Coupé remained in production until the end of 1996 and spawned the Audi S2 series of sports versions. A convertible model arrived in 1991, called simply the Cabriolet, and remained in production until 2000.
The Audi S2 is an Audi sports car, manufactured by the division of quattro GmbH on the same platform as the Audi 80 (B4) in Neckarsulm, Germany, produced from 1991 to 1995. The Audi S2 is the first car in the Audi S series. In 1994, a more powerful Audi RS 2 Avant was released.
Audi S and RS models are a range of high performance versions of certain car models of the German automotive company Audi AG. These cars primarily focus on enhanced "sport" performance. Production of Audi "S" cars began in 1990 with the S2 Coupé, whilst the first "RS" car appeared four years later with the Audi RS 2 Avant.
Audi hybrid vehicles are hybrid electric vehicles created by the German carmaker, Audi. Some vehicles listed were concept vehicles, which utilised an internal combustion engine and an electric motor, and were used for research and development (R&D) for potential future use of the technology into possible series production. Audi launched its first hybrid concept car in 1989 called the Audi Duo, and was the first European company to sell a hybrid in 1997, though only in very small numbers.
Audi Sport GmbH, formerly known as quattro GmbH, is the high-performance car manufacturing subsidiary of Audi, itself a subsidiary of the greater Volkswagen Group.
The Audi S5 is one of two high-performance variants of Audi's A5. The B8 and B9 generations were marketed as the coupé, cabriolet, and five-door fastback sedan versions of the B8 and B9 Audi S4 saloon and estate models, while the B10 S5 is the direct replacement of the B9 S4 models.
The SEAT Exeo is a large family car and flagship model, that was built by the Spanish car manufacturer SEAT, subsidiary of the Volkswagen Group. The Exeo is an Audi A4 (B7) with a redesigned front and rear.
5HP is ZF Friedrichshafen AG's trademark name for its five-speed automatic transmission models for longitudinal engine applications, designed and built by ZF's subsidiary in Saarbrücken.
↑ Johansson, Claes, ed. (13 June 1991). "Toledo och S4 i Barcelona" [Toledo and S4 in Barcelona]. Teknikens Värld (in Swedish). Vol.43, no.12. Stockholm, Sweden: Specialtidningsförlaget AB. p.16.
↑ Thompson, Stephen L. (March 1992). "Preview: Audi S4". Car and Driver. pp.79–80.
↑ Gato, Rodrigo (April 1992). "Magnum Force". Car and Driver. pp.47–56.
↑ Sport Compact Car magazine 2007 Ultimate Street Car ChallengeArchived 14 March 2008 at the Wayback Machine"The Audi S4 ... showed its capability with consistently strong finishes in the acceleration, dyno, braking and driveability tests"
↑ Audi Self-Study Programme SSP198 - The 2.7-litre V6 biturbo
↑ Parks, Jim (17 July 2008). "Audi Selects Eaton TVS Supercharger To Power Fuel Efficient V6". eaton.com. Eaton Corporation. Archived from the original on 11 June 2011. Retrieved 24 July 2009. when paired with direct injection and enhanced transmission ratio, the TVS supercharger helps the engine achieve 290 hp with an average fuel economy of nearly 24 miles per gallon
↑ Parks, Jim (6 November 2008). "Eaton TVS Supercharger Featured On 2010 Audi S4/S4 Avant". eaton.com. Eaton Corporation. Archived from the original on 11 June 2011. Retrieved 24 July 2009. When combined with direct injection, the TVS surpasses twin turbochargers in packaging, starting performance and responsiveness
↑ "The Audi S4". hillsideimports.com. Hillside Imports. 9 August 2014. Archived from the original on 12 May 2015. Retrieved 13 May 2015.
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