Turbocharged Direct Injection
The new engines for the A6 were 1.8-litre 20v inline four-cylinder, 2.0-litre 8v inline four-cylinder, 2.6-litre 12V V6 and 2.8-litre 30v V6 petrol engines, with the 2.3-litre inline five engine being dropped on most markets. For the diesel engines, an inline four 1.9 Turbocharged Direct Injection (TDI), and the inline five (R5) 2.5 TDI () were available.