Learn about Audi's secret diesel-electric hypercar inspired by its hugely successful Le Mans racing program.

Click for a high res gallery of the mileage marathon vehicles Click for a high res gallery of the mileage marathon vehicles It’s been a few years since Audi sold diesel-powered cars in the U.S., but ...

Audi has a turbo diesel V6 engine for overseas markets. How does it compare to the more familiar gas version?

A new hybrid diesel tech revives old-school power with instant torque, better efficiency, and the ability to run on renewable fuels ...

German carmaker Audi announced the arrival of the EA897evo4 V6 TDI engine for the Q5 and A6, the first to use an electrically powered compressor.

Audi has unveiled a next-generation 3.0-liter V6 TDI engine that blends diesel power with mild-hybrid tech and an electric compressor. Debuting in the A6 and Q5, it offers quicker response, higher ...

Today's Nice Price or No Dice Audi 5000 hails from a brief period in the early 1980s when automakers embraced diesel engines to make cars more fuel-efficient in reaction to the gas crunch of the 1970s ...

While American buyers never adopted diesel cars en masse like their European counterparts, there have still been a few diesel models that were offered for sale in the U.S. over the decades. Still, ...