Audi A6 S-line Quattro for sale. Its a 2.0 TDI and it is ULEZ free, no problems with the engine and transmission. The flywheels and clutch pressure plate for the gearbox have been replaced (have a video showing) Starts and drives without issues Audi A6 S-line Quattro for sale. Its a 2.0 TDI and it is ULEZ free, no problems with the engine and transmission. The flywheels and clutch pressure plate for the gearbox have been replaced (have a video showing) Starts and drives without issues