The acronym "TFSI" stands for "Turbo Fuel Stratified Injection." It is a technology used in Audi engines that combines direct injection with turbocharging and supercharging to improve power output, engine response, fuel efficiency, and reduce emissions
. This technology was first introduced by Audi in 2004 and has been used in various Audi vehicles, including 4-cylinder, 6-cylinder, and V-8 engine variations
. The TFSI technology allows for more efficient fuel consumption, improved heat management within the engine's combustion chamber, and better long-term durability
