Turbo Fuel Stratified Injection technology for gasoline engines was once a remarkable innovation that has since become quite commonplace. Traditional fuel-injected engines that don't use direct ...

Volkswagen uses TSI and TFSI to denote many of its engines. But just how much of a difference comes from those alternate ...

Revealed last year, the A4-replacing A5 Sedan and A5 Avant were released with mild-hybrid powertrains built around the 2.0-liter TFSI and 3.0-liter TFSI. The lesser engine is now available with ...

PALM SPRINGS, CA—The gas-powered 2026 Audi A6 lineup is a sign of the times. What we have here is the only powertrain for the latest generation of Audi’s venerable mid-sizer. Four-cylinder? Gone.

Other improvements include a revised infotainment system and expanded voice controls. The 2026 Audi A6 TFSI has only recently touched down and already Audi has announced a round of updates for the mid ...