AWF8F35

AWF8F35/45
AWF8F35/45
	Cutaway of an AWF8F35
Overview
Manufacturer	Aisin AW
Also called	BMW & Mini GA8F22AW; Toyota UA80E/UA80F ; Volvo TG-81SC/SD ; GM AWF8F45 & AF50-8; VW AQ450; PSA EAT8
Production	2013–present
Body and chassis
Class	8-speed transverse automatic transmission
Related	ZF 8HP · ZF 9HP
Chronology
Predecessor	AWTF-80 SC transmission

Last updated April 16, 2024

The Aisin AW F8FXX series is the world's first^[1] 8-speed automatic transmission designed for use in transverse engine applications. Aisin designed the transmission to package in the same space as preceding 6-speed designs, while increasing the total gear spread and reducing gear spacing.^[2] It is also called the EAT8 (PSA), GA8F22AW (BMW & Mini), TG-81SC (Volvo), ^[3]AF50-8 (Opel/Vauxhall), ^[4]AWF8F45^[5] (Cadillac), and AQ450 (Volkswagen Group).^[6] First usage was in the 2013 model year Lexus RX350 F Sport.

Specifications

Gearset 1 is not an ordinary gearset but a reverse one. It employs two planetary gears which mesh with each other. One of these planets meshes with the sun gear, the other planet meshes with the ring gear. This results in different ratios being generated by the planetary and also causes the sun gear to rotate in the same direction as the ring gear when the planet carrier is the stationary.

This made it possible to manage with three wheel sets. As a result, the transmission is more compact than eight-speed transmissions for conventional drives. This meant that an eight-speed automatic transmission was also possible for transverse engines. The same gearset concept was first used by Lexus in 2007 and was the very first eight-speed automatic transmission for passenger cars on the world market.

Gear Teeth and Ratios^{[lower-alpha 1]}				Planetary Gearset: Teeth^{[lower-alpha 2]}				Count	Total	Avg.	Drive- train
Gear Teeth and Ratios^{[lower-alpha 1]}				Simple	Ravigneaux			Count	Total	Avg.	Drive- train

Model Type	First Delivery Max. Input Torque			${S_{1}}$ ^{[lower-alpha 3]} ${R_{1}}$ ^{[lower-alpha 4]}	${S_{2}}$ ^{[lower-alpha 5]} ${R_{2}}$ ^{[lower-alpha 6]}	${S_{3}}$ ^{[lower-alpha 7]} ${R_{3}}$ ^{[lower-alpha 8]}		Brakes Clutches	Ratio Span	Gear Step	Final Drive
Gear $n$	R1	R2	1	2	3	4	5	6	7	8
Step $i_{n-1}/i_{n}$	–R1 : 1	–R2 : 2		1 : 2	2 : 3	3 : 4	4 : 5	5 : 6	6 : 7	7 : 8

AA 80E Lexus	480 N⋅m (354 lb⋅ft ) · 2007			38 82	30 34	34 74		2 4	6.7091	1.3125
Ratio $i_{n}$	−4.0561 $-{\tfrac {1,517}{374}}$	−2.1765 $-{\tfrac {37}{17}}$	4.5970 ${\tfrac {1,517}{330}}$	2.7241 ${\tfrac {12,136}{4,455}}$	1.8636 ${\tfrac {41}{22}}$	1.4642 ${\tfrac {24,272}{16,577}}$	1.2313 ${\tfrac {1,517}{1,232}}$	1.0000 ${\tfrac {1}{1}}$	0.8245 ${\tfrac {1,517}{1,840}}$	0.6852 ${\tfrac {37}{54}}$
Step	0.8824	0.7990		1.6875	1.4617	1.2728	1.1891	1.2313	1.2129	1.2033

AA 80E				38 83	30 38	38 78		2 4	7.1252	1.3240
Ratio $i_{n}$	−3.7860 $-{\tfrac {1,79}{285}}$	−2.0526 $-{\tfrac {39}{19}}$	4.7956 ${\tfrac {1,079}{225}}$	2.8112 ${\tfrac {18,343}{6,525}}$	1.8444 ${\tfrac {83}{45}}$	1.4294 ${\tfrac {18,343}{12833}}$	1.2137 ${\tfrac {1,079}{889}}$	1.0000 ${\tfrac {1}{1}}$	0.8176 ${\tfrac {3,237}{3,959}}$	0.6724 ${\tfrac {39}{58}}$
Step	0.7895	0.7302		1.7059	1.5241	1.2904	1.1777	1.2137	1.2230	1.2160

AW F8F35 AW F8F45	350 N⋅m (258 lb⋅ft ) · 2013 480 N⋅m (354 lb⋅ft ) · 2013			38 78	36 44	44 96		2 4	7.5833	1.3357
Ratio $i_{n}$	−4.2545 $-{\tfrac {234}{55}}$	−2.1818 $-{\tfrac {24}{11}}$	5.2000 ${\tfrac {26}{5}}$	2.9714 ${\tfrac {104}{35}}$	1.9500 ${\tfrac {39}{20}}$	1.4700 ${\tfrac {416}{283}}$	1.2235 ${\tfrac {104}{85}}$	1.0000 ${\tfrac {1}{1}}$	0.8175 ${\tfrac {936}{1,145}}$	0.6857 ${\tfrac {24}{35}}$	4.398
Step	0.8181	0.7343		1.7500	1.5238	1.3266	1.2014	1.2235	1.2233	1.1921

AW F8F45	480 N⋅m (354 lb⋅ft ) 2013^[5]			38 78	26 34	34 70		2 4	7.8000	1.3410
Ratio $i_{n}$	−4.0147 $-{\tfrac {273}{68}}$	−2.0588 $-{\tfrac {35}{17}}$	5.2500 ${\tfrac {21}{4}}$	3.0288 ${\tfrac {315}{104}}$	1.9500 ${\tfrac {39}{20}}$	1.4570 ${\tfrac {1,575}{1,081}}$	1.2209 ${\tfrac {105}{86}}$	1.0000 ${\tfrac {1}{1}}$	0.8086 ${\tfrac {1,365}{1,688}}$	0.6731 ${\tfrac {35}{52}}$	3.075 3.200
Step	0.7647	0.6797		1.7333	1.5533	1.3384	1.1933	1.2209	1.2366	1.2014

AW F8F35	350 N⋅m (258 lb⋅ft ) 2013			42 82	26 34	34 70		2 4	8.2000	1.3507
Ratio $i_{n}$	−4.2206 $-{\tfrac {287}{68}}$	−2.0588 $-{\tfrac {35}{17}}$	5.5192 ${\tfrac {287}{52}}$	3.1842 ${\tfrac {4,305}{1,352}}$	2.0500 ${\tfrac {41}{20}}$	1.4920 ${\tfrac {3,075}{2,061}}$	1.2349 ${\tfrac {205}{166}}$	1.0000 ${\tfrac {1}{1}}$	0.8008 ${\tfrac {205}{256}}$	0.6731 ${\tfrac {35}{52}}$	2.561
Step	0.7647	0.6466		1.7333	1.5533	1.3740	1.2082	1.2349	1.2488	1.1897

Ratio R & even	$-{\tfrac {S_{3}}{R_{3}}}$		${\tfrac {R_{1}R_{3}(S_{2}+R_{2})}{S_{2}(R_{1}-S_{1})(S_{3}+R_{3})}}$		${\tfrac {R_{1}R_{3}(S_{2}+R_{2})}{S_{2}R_{3}(R_{1}-S_{1})+R_{1}R_{2}R_{3}-S_{1}S_{2}S_{3}}}$			${\tfrac {1}{1}}$	${\tfrac {R_{3}}{S_{3}+R_{3}}}$
Ratio R & odd	${\tfrac {R_{1}R_{3}}{S_{3}(S_{1}-R_{1})}}$		${\tfrac {R_{1}R_{2}R_{3}}{S_{2}S_{3}(R_{1}-S_{1})}}$		${\tfrac {R_{1}}{R_{1}-S_{1}}}$		${\tfrac {R_{1}R_{2}R_{3}}{R_{1}R_{2}R_{3}-S_{1}S_{2}S_{3}}}$		${\tfrac {R_{1}R_{3}}{R_{1}R_{3}-S_{1}S_{3}}}$

↑ Differences in gear ratios have a measurable, direct impact on vehicle dynamics, performance, waste emissions as well as fuel mileage
↑ Layout
(1) Planetary gearset 1 is on the input (turbine) side
(2) Output shaft is ring 3 (ring gear of gearset 3 (outer Ravigneaux gearset)
↑ Sun 1: sun gear of gearset 1: reverse gearset
↑ Ring 1: ring gear of gearset 1 reverse gearset
↑ Sun 2: sun gear of gearset 2: inner Ravigneaux gearset
↑ Ring 2: ring gear of gearset 2: inner Ravigneaux gearset
↑ Sun 3: sun gear of gearset 3: outer Ravigneaux gearset
↑ Ring 3: ring gear of gearset 3: outer Ravigneaux gearset

Applications

BMW/MINI

2015–present BMW 2 Series Active Tourer (F45) and Gran Tourer (F46) with 4-cylinder engines
2016–present BMW X1 (F48) with 4-cylinder engines
2016–present Mini Clubman (F54) with 4-cylinder engines
2016–present Mini Countryman (F60) with 4-cylinder engines (and B38 with AWD)
2018–present Mini Cooper SD (F55/F56) and JCW (F56) due to torque output over 300Nm
2018–present BMW X2 (F39) with 4-cylinder engines
2019–present BMW 1 Series (F40) with 4-cylinder engines
2020–present BMW 2 Series Gran Coupé with 4-cylinder engines

Changan

2019–present Oshan COS1° GT
2019–present Changan CS85
2020–present Changan UNI-K
2021–present Changan UNI-V
2022–present Changan CS75

Chery

2023–present Chery Tiggo 9 (AWD)

Citroën

2017–present Citroën C5 Aircross
2018–present Citroën Grand C4 SpaceTourer
2019–present Citroën Berlingo
2020–present Citroën C4
2021–present Citroën C5 X

DS Automobiles

2018–present DS 7
2019–present DS 3
2020–present DS 9
2021–present DS 4

Exeed

2023–present Exeed Lanyue

Geely

2019–present Geely Xingyue/Xingyue L ^[7]
2020–present Geely Xingrui

GM

2016 Chevrolet Malibu
2017 Buick LaCrosse ^[8]
2017–2019 Cadillac XT5 ^[5]
2018–2020 Buick Regal TourX, (I4 AWD only)

Jaguar

2020–present Jaguar E-Pace (1.5t 3-cylinder engines)

Land Rover

2020–present Discovery Sport (1.5t 3-cylinder engines)
2020–present Evoque (1.5t 3-cylinder engines)

Lexus

2012–present Lexus RX (V6 AL10 F-Sport, AL20 & AL30 non Hybrids)
2018–present Lexus ES (non-hybrid engines)
2020–present Lexus LM (LM350)
2022– Lexus NX (non-hybrid engines)

Lynk & Co

2017–present 01
2018–present 03
2020–present 05 ^[9]
2021–present 02
2021–present 09

Mitsubishi

2017–present Mitsubishi Eclipse Cross (diesel engines)
2019–present Mitsubishi Delica (diesel engines)

Opel/Vauxhall

2017–present Opel Insignia
2017–present Opel Grandland X
2018–present Opel Combo
2020–present Opel Corsa
2020–present Opel Mokka
2021–present Opel Astra L

Peugeot

2017–present Peugeot 5008
2017–present Peugeot 308
2019–present Peugeot 3008 1.6 EAT8 & 2.0 EAT8
2018–present Peugeot 508 EAT8
2019–present Peugeot Rifter EAT8
2019–present Peugeot 208
2019–present Peugeot 2008
2022–present Peugeot 408

Polestar

2019–present Polestar 1

Škoda

2018–present Škoda Karoq (Australian market)
2020–present Škoda Octavia (some markets)

Toyota (as UA8xx)

2018–present Toyota Avalon (non-hybrid engines)
2018–present Toyota Alphard/Vellfire
2018–present Toyota Camry (non-hybrid engines)
2018–2020 Toyota Sienna
2019–present Toyota RAV4 (non-hybrid)
2020–present Toyota Highlander/Grand Highlander
2024–present Toyota GR Yaris

Volkswagen/MAN

2017-present Volkswagen Crafter and MAN TGE (transversely mounted engine only)
2018–present Volkswagen Tiguan (US version only)^[10]
2018–present Volkswagen Atlas (US version only)
2018–present Volkswagen Golf (US MK7 & MK8 in some markets)
2019–present Volkswagen Jetta (US version only)
2019–present Volkswagen Arteon (US version only)
2022–Volkswagen Taos (FWD models)^[11]

Volvo (TG-81SC/SD)

2014–2016 Volvo S80 II ^[12]
2014–2016 Volvo V70 II ^[13]
2014–2016 Volvo XC70 II
2014–2017 Volvo XC60
2015–2018 Volvo S60 II
2015–2018 Volvo V60
2014–present Volvo XC90 II ^[14]
2016–present Volvo S90 II ^[14]
2016–present Volvo V90 II ^[14]
2016–present Volvo V40
2017–present Volvo XC60 II
2017–present Volvo XC40 ^[15]
2018–present Volvo V60 II ^[3]
2018–present Volvo S60 III

Related Research Articles

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References

↑ Toshihiko Aoki; Hiroshi Kato; Naoki Kato; Morise Masaru (8 April 2013). The World's First Transverse 8-Speed Automatic Transmission (Technical report). SAE International. doi:10.4271/2013-01-1274. 2013-01-1274.
↑ Aisin AW Co. "High Torque Capacity FWD 8-speed AT". www.aisin-aw.co.jp. Archived from the original on 2018-05-20. Retrieved 2018-05-19.
1 2 "Volvo V60 prijslijst Modeljaar 2019" [Volvo V60 price list model year 2019](PDF). volvo-tools-prd-media.s3.amazonaws.com (in Dutch). Volvo Cars Netherlands. July 2018. pp. 18–19. Archived (PDF) from the original on 2021-10-16. Retrieved 2018-07-14. File valid from 12 November 2018
↑ Geord Bednarek (2 December 2016). "Der neue Insignia – im 8-Stufen Takt" [The new Insignia – with 8-step beat]. www.opel-blog.com (in German). Opel AG. Archived from the original on 2017-10-15. Retrieved 2017-12-29.
1 2 3 "Cadillac XT5 Initiates New Series of Cadillac Luxury Crossovers" (PDF). media.cadillac.com (Press release). Cadillac. 9 November 2015. p. 12. Retrieved 2018-07-14. No archive due to robots.txt
↑ "8 Speed Auto (US) Transmission and Torque Capacity".
↑ "Test Drive Geely Xingyue Coupe SUV Review". 29 May 2019.
↑ "All-New 2017 Buick LaCrosse is Here | TechLink". sandyblogs.com. Retrieved 2018-08-02.
↑ "Lynk & Co. Reveals 05 coupe-like crossover".
↑ Don Sherman (December 2016). "2018 Volkswagen Tiguan: We Finally Sample the U.S. Version". caranddriver.com.
↑ "2022 Volkswagen Taos: What We Know So Far". 21 April 2021.
↑ Chris Davies (5 September 2014). "2015 Volvo S80 D4 Geartronic SE Lux review – Updated Swedish Exec Gets Greener". carproductstested.com. Archived from the original on 2017-11-07. Retrieved 2017-12-28.
↑ "Volvo V70 – model year 2014". www.media.volvocars.com. Volvo Car Corporation. 13 May 2013. Archived from the original on 2013-10-23. Retrieved 2017-12-28.
1 2 3 Paul Weissler (20 January 2016). "Volvo's 2017 S90 has standard semi-autonomous driving system". articles.sae.org. SAE International. Archived from the original on 2017-10-17. Retrieved 2017-12-29.
↑ Gary Witzenburg (8 January 2018). "2019 XC40 spearheads Volvo's new CMA platform". SAE International. Archived from the original on 2018-06-12. Retrieved 2018-06-08.

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[7] Differences in gear ratios have a measurable, direct impact on vehicle dynamics, performance, waste emissions as well as fuel mileage

[8] Layout
(1) Planetary gearset 1 is on the input (turbine) side
(2) Output shaft is ring 3 (ring gear of gearset 3 (outer Ravigneaux gearset)

[9] Sun 1: sun gear of gearset 1: reverse gearset

[10] Ring 1: ring gear of gearset 1 reverse gearset

[11] Sun 2: sun gear of gearset 2: inner Ravigneaux gearset

[12] Ring 2: ring gear of gearset 2: inner Ravigneaux gearset

[13] Sun 3: sun gear of gearset 3: outer Ravigneaux gearset

[14] Ring 3: ring gear of gearset 3: outer Ravigneaux gearset

[1] Toshihiko Aoki; Hiroshi Kato; Naoki Kato; Morise Masaru (8 April 2013). The World's First Transverse 8-Speed Automatic Transmission (Technical report). SAE International. doi:10.4271/2013-01-1274. 2013-01-1274.

[2] Aisin AW Co. "High Torque Capacity FWD 8-speed AT". www.aisin-aw.co.jp. Archived from the original on 2018-05-20. Retrieved 2018-05-19.

[V60_2_NL_MY19-3] 1 2 "Volvo V60 prijslijst Modeljaar 2019" [Volvo V60 price list model year 2019](PDF). volvo-tools-prd-media.s3.amazonaws.com (in Dutch). Volvo Cars Netherlands. July 2018. pp. 18–19. Archived (PDF) from the original on 2021-10-16. Retrieved 2018-07-14. File valid from 12 November 2018

[4] Geord Bednarek (2 December 2016). "Der neue Insignia – im 8-Stufen Takt" [The new Insignia – with 8-step beat]. www.opel-blog.com (in German). Opel AG. Archived from the original on 2017-10-15. Retrieved 2017-12-29.

[XT5_F45-5] 1 2 3 "Cadillac XT5 Initiates New Series of Cadillac Luxury Crossovers" (PDF). media.cadillac.com (Press release). Cadillac. 9 November 2015. p. 12. Retrieved 2018-07-14. No archive due to robots.txt

[6] "8 Speed Auto (US) Transmission and Torque Capacity".

[15] "Test Drive Geely Xingyue Coupe SUV Review". 29 May 2019.

[16] "All-New 2017 Buick LaCrosse is Here | TechLink". sandyblogs.com. Retrieved 2018-08-02.

[17] "Lynk & Co. Reveals 05 coupe-like crossover".

[18] Don Sherman (December 2016). "2018 Volkswagen Tiguan: We Finally Sample the U.S. Version". caranddriver.com.

[19] "2022 Volkswagen Taos: What We Know So Far". 21 April 2021.

[20] Chris Davies (5 September 2014). "2015 Volvo S80 D4 Geartronic SE Lux review – Updated Swedish Exec Gets Greener". carproductstested.com. Archived from the original on 2017-11-07. Retrieved 2017-12-28.

[21] "Volvo V70 – model year 2014". www.media.volvocars.com. Volvo Car Corporation. 13 May 2013. Archived from the original on 2013-10-23. Retrieved 2017-12-28.

[SAE_SPA_90-22] 1 2 3 Paul Weissler (20 January 2016). "Volvo's 2017 S90 has standard semi-autonomous driving system". articles.sae.org. SAE International. Archived from the original on 2017-10-17. Retrieved 2017-12-29.

[23] Gary Witzenburg (8 January 2018). "2019 XC40 spearheads Volvo's new CMA platform". SAE International. Archived from the original on 2018-06-12. Retrieved 2018-06-08.

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[lower-alpha 1]

[lower-alpha 2]

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[lower-alpha 4]

[lower-alpha 5]

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AWF8F35

Contents

Specifications

Applications

Related Research Articles

References