The turbocharger stopped working on my 2009 Audi A4. Can the car function without it, and is it being damaged by being driven? – Gabriella Your turbocharger is a turbine/fan device driven by the ...

The wastegate regulates turbocharger pressure, by acting as a bypass for some of the exhaust gas flow. The 1.4L, 1.8L and 2L engines are potentially affected in the following models: ...