Power-to-weight ratio is a calculation commonly applied to engines and mobile power sources to enable the comparison of one unit or design to another. Power-to-weight ratio is a measurement of actual performance of any engine or power source. It is also used as a measurement of performance of a vehicle as a whole, with the engine's power output being divided by the weight of the vehicle, to give a metric that is independent of the vehicle's size. Power-to-weight is often quoted by manufacturers at the peak value, but the actual value may vary in use and variations will affect performance.
The BMW Z8 is a roadster produced by German automotive manufacturer BMW from 1998 to 2003. The Z8 was developed under the codename "E52" between 1993 and 1999, through the efforts of a design team led by Chris Bangle from 1993 to 1995. The exterior was designed by Henrik Fisker and the interior by Scott Lempert.
The Neon is a compact car built from November 1993 until 2005 by the American Chrysler Corporation over two generations. It has a front-engine, front-wheel-drive layout and was available in two-door and four-door sedan body styles. In the United States and Canada, it was sold as either a Dodge or a Plymouth, while in Europe, Mexico, Japan, South Korea, Egypt, Australia, South Africa, and South America, it was branded as a Chrysler.
The Audi Avantissimo was a concept car made by the German automobile manufacturer Audi. The car debuted at the 2001 Frankfurt Motor Show and also appeared at the 2002 North American International Auto Show in Detroit. Audi planned the car to be luxurious and distinguished, but also very fast. Many of its styling cues are visible on the 2002 Audi A8.
The Dodge Razor was a concept car created by American car manufacturer Dodge. It was introduced at the 2002 North American International Auto Show. The Razor was a partnership between Dodge and scooter manufacturer Razor, who were responsible for part of its design.
The Porsche Panamericana is a concept automobile produced by Porsche AG. It was designed by Dutchman Harm Lagaay along with Steve Murkett (designers) and Ulrich Bez to preview some design features that would be on the upcoming 993 generation 911. It was also built as a gift for Ferry Porsche for his 80th birthday. The name comes from the famous Carrera Panamericana race that was held in the 1950s.
The Bertone Genesis or sometimes referred to as the Lamborghini Genesis was a Bertone designed concept car using Lamborghini parts. It was first displayed to the public at the 1988 Turin Auto Show.
The Ferrari Mythos is a mid-engine, rear wheel drive concept car based on the mechanical underpinnings of the Ferrari Testarossa. Designed by Italian design house Pininfarina and developed by automobile manufacturer Ferrari, its world premiere was at the 1989 Tokyo Motor Show.
The Ford Forty-Nine was a concept car created by the Ford Motor Company. It was designed by Chip Foose and was first introduced at the 2001 North American International Auto Show. It was a tribute to the 1949 Ford. A convertible was also built, finished in red, but it was a static display vehicle and as such had no running gear.
The Audi Rosemeyer is a concept car built by Audi, shown initially at Autostadt and at various auto shows throughout Europe during 2000. It featured a polished aluminum body inspired by 1930s Auto Union racecars, and a mid mounted WR16 engine that would later be used in the Bugatti Veyron.
A slingshot is a small hand-powered projectile weapon.
The KTM X-Bow is an ultra-light sports car manufactured by Austrian automotive manufacturer KTM, a company known for their production of motorcycles. The X-Bow was the first mass-produced car in their product range and was unveiled and launched at the Geneva Motor Show in 2008. The X-Bow road car was developed in collaboration with KISKA, Audi, and Dallara.
The Dodge Venom was a concept car that was produced in 1994 by the American automaker Dodge. The car was built on a modified version of the Chrysler PL platform that was used in the Dodge Neon. The car was designed to showcase Dodge's Cab-Forward design in a two-seat sports car package. Although based on the Neon, the upgraded V6 engine and rear wheel drive set gave this car a sports appeal. The car featured a 3.5-liter, overhead-cam, 24-valve V6 engine that was able to put out 245 horsepower and 221 pound-feet of torque at 2,800 rpm. It was debuted along with two other concept cars on January 3, 1994. The car was projected to cost $8,975, $13,000 "fully loaded".
The Audi Steppenwolf was a concept car produced by Audi and presented at the Paris Motor Show in 2000. The Steppenwolf was a study for a three-door compact crossover SUV based on the Volkswagen Group PQ34 platform used in the contemporary Audi A3 and Audi TT. Powered by a 3.2L V6 engine with four-wheel drive, the Steppenwolf had several novel features, including four-level adjustable air suspension, a removable carbon fibre hardtop or optional soft top, and an electro-hydraulic parking brake.
The MID4 was an experimental sports car produced by Nissan.
The Alfa Romeo 4C is a mid-engined sports car that was produced by Italian car manufacturer Alfa Romeo. Unveiled at the 2013 Geneva Motor Show, the 4C was initially only available as a coupé, with a spider body style coming a few years later in 2015. The name 4C refers to the straight-four engine.
The Volkswagen Concept D is a concept luxury liftback designed by Ferdinand Piëch, which was unveiled at the 1999 International Motor Show Germany before going on public display.
The Porsche Tapiro is a concept car built by Porsche in 1970. It was designed by Giorgetto Giugiaro and has a traditional 1970s wedge design, which critics say somewhat resembles that of the De Tomaso Mangusta. The chassis is based on the Porsche 914/6, and it features gullwing-style doors.
The Alfa Romeo Tonale is a car produced by the Italian company Alfa Romeo since February 2022. Being a five-seater compact crossover SUV, it slots above the Alfa Romeo Junior and below the Alfa Romeo Stelvio in the marque's crossover SUV range. Known internally as the 965, the Tonale is the first hybrid-powered Alfa Romeo and became the first new model introduced by the brand in six years. It is named after the Tonale mountain pass in Northern Italy.
The eighth-generation Dodge Charger is a full-size car manufactured and marketed by Stellantis North America under the Dodge marque. It was introduced as a production model in March 2024, following appearances of nearly identical concept cars in 2022. It is the first Dodge vehicle to be available with a battery electric powertrain, marketed as the Charger Daytona. A gasoline-powered version called the Charger SIXPACK will be available in 2025, equipped with the 3.0-liter inline-six Hurricane engine.
