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

Back in the early days, diesel engines were for trucks, tractors, and stationary applications. They were deemed too heavy, too complicated, and too unrefined to be fitted onto a road car. Well-known ...

Audi has unveiled a next-generation 3.0-liter V6 TDI engine that blends diesel power with mild-hybrid tech and an electric ...

Audi, like the rest of the Volkswagen Group, is looking to become carbon neutral by 2050. That mostly means developing electric vehicles but it doesn’t preclude taking smaller, shorter-term steps to ...

WILLIAMS, AZ (AZFamily)—Steam engine 4960 is special not only because it’s one of about 200 steam engines in operation in the U.S. but also because it’s the only steam engine that completely runs on ...

The U.S. is importing an unprecedented volume of used cooking oil to make renewable diesel — a sustainable fuel made from food waste. Renewable diesel is a type of biofuel that is chemically identical ...

Can’t afford an EV? Not willing to give up on a classic car? Want to eschew rising fuel prices? There are lots of good reasons to increase your car’s fuel economy. But one thing you might want to ...