What is Turbocharged Fuel Stratified Injection (TFSI)?
Turbocharged Fuel Stratified Injection (TFSI) is predominantly used by Audi to designate its turbo-petrol cars. This technology helps Audi's engines make more power and use less fuel. These engines are used by other VW-Group brands under the 'TSI' name. You'll also see 'TFSI e', which signifies that the Audi you're looking at is a plug-in hybrid.
Related glossary terms
GDI - gasoline direct injectionGDI (gasoline direct injection) is a method of fuel injection used by some modern petrol engines.TurbochargerA turbocharger is a snail-shaped device that captures energy from spent exhaust gases and uses it to force more fresh air into an engine.TDI - Turbocharged Direct InjectionTurbocharged direct injection just tells you that the car has a turbocharger and that the fuel is more precisely controlled than a car with multi-port indirect fuel injection.