Turbo fuel stratified injection or TFSI combines petrol direct injection with turbocharging.

Compared with conventional naturally aspirated V6 engines, a turbocharged direct-injection four-cylinder engine delivering the same performance uses 10 to 15 percent less fuel.

FSI technology and turbocharging make an excellent combination because the evaporation of fuel directly within the combustion chamber in FSI engines removes heat from the intake air. This allows a higher compression, significantly improving engine efficiency. It also solves an old problem in all turbocharged engines – a high tendency to knock at high boost levels.

The integrated turbocharger exhaust manifold module ensures optimum turbine efficiency, resulting in excellent utilisation of the exhaust energy. This achieves both a high power output and optimum engine responsiveness, ultimately helping to reduce fuel consumption and exhaust emissions.