Audi hybrid vehicles

Audi hybrid vehicles are hybrid electric vehicles created by the German carmaker, Audi AG. 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 Duo, aka Audi 100 Avant Duo

The original Audi Duo was created in 1989, and was based on the Audi C3 100 Avant. It was a petrol engine/electric hybrid concept vehicle.

Audi 100 Duo, 2nd generation

Audi 100 Duo second generation was introduced in 1991. It featured Audi's "trademark" quattro permanent four-wheel drive system.

Audi Duo II

Little is known about the Audi Duo II. It was based on the Audi C4 100/A6 Avant, and made sometime in the early to mid 1990s.

Audi Duo III, aka Audi A4 Duo

The Audi Duo III was introduced in 1997, based on the Audi B5 A4 Avant, and was the only Duo to ever make it into series production. The Duo III used the 1.9-litre (120 cu in) Turbocharged Direct Injection (TDI) diesel engine, which was coupled with a 21-kilowatt (29 PS; 28 bhp) electric motor. There was a switch inside the cabin for changing between the electric motor and the engine. The batteries would be recharged during highway or country driving, or by plugging the car into an AC power outlet. The hybrid was unable to achieve fuel efficiency much greater than the standard 1.9 TDI, due to the extra weight the batteries added.

There was little demand for this hybrid due to its high price, and thus only about sixty Audi Duos were produced. The Duo was the first European hybrid ever put into production and up until early 2011 the only Audi.

Audi Q7 hybrid 4.2 FSI quattro

Audi unveiled the Audi Q7 hybrid 4.2 FSI quattro, which uses their Fuel Stratified Injection (FSI) 4.2 litre V8 engine, at the 2005 Frankfurt Motor Show. Audi had planned to have the Q7 hybrid as a part of their 2008 model range, but never did.

Audi metroproject quattro

In the third quarter of 2007, just before its official announcement at the Tokyo Motor Show, Audi leaked information about "metroproject quattro". The metroproject quattro is a supermini/sub-compact, intended to compete with the MINI.

Under the bonnet/hood is a 1.4 litre TSI petrol engine, producing 110 kilowatts (150 PS; 148 bhp). This will distribute its torque of 240 newton metres (177 lbf·ft) to the front roadwheels via an 'S tronic' Direct-Shift Gearbox. However, in the back of the car, beneath a perspex peephole, is a 30 kilowatts (41 PS; 40 bhp) electric motor which drives the rear axle, and can generate an additional 200 newton metres (148 lbf·ft) of torque, designed to create a zero emissions driving experience in residential or city areas, and increase torque while the 1.4 TSI engine is accelerating.

A lithium-ion battery pack supports a range of up to 100 kilometres (62 mi). In electric mode, the car has a top speed of more than 100 kilometres per hour (62 mph). When both the engine and electric motors are working in unison, the car is transformed into a genuine quattro, with a combined torque output of 440 newton metres (325 lbf·ft) being shared between all four roadwheels.

Stop-start technology will be utilised, as will regenerative braking. As a result, Audi claim a 15% improvement in fuel efficiency when compared to exclusive use of the internal combustion engine.

The A1 got into production in 2010 without a hybrid. There are also no plans to add such later; instead of that they plan an all electric version

Other vehicles

Other Audi hybrid electric vehicles include:

• Audi A1 Sportback Concept
• Audi A4 TDI concept e