This Audi A6 C6 with a 3.0 TDI engine had previously been modified around its exhaust emissions system and fitted with a larger front-mounted intercooler. On this visit, the engine was tested on a dynamometer and the automatic transmission’s operation was assessed.

The model’s nominal output is approximately 233 hp and 450 Nm. Following the modifications, the dyno recorded 300 hp and 661 Nm. The automatic transmission operated normally during the test.

No pronounced black smoke was observed in the usual driving range, although the video notes smoke at around 4,500 rpm and above. This is an observation from this car’s test, not a general conclusion about turbocharger or engine condition. Dyno testing makes it possible to compare actual engine output with nominal figures instead of relying only on how the car feels on the road.