I got a question for you: Porsche has sold a diesel version of the Cayenne powered by a 3.0-L V6 TDI engine since February 2009. The engine is rated at 240 PS (177 kW; 237 hp) and 550 N m (410 lb ft) of torque. The car was unveiled in 2009 Geneva Motor Show. The diesel can accelerate from 0 -- 60 mph in 9.2 seconds.

Answer this question: what engine is in the porsche cayenne diesel?
Let's think first:
To answer the above question, the relevant sentence is: Porsche has sold a diesel version of the Cayenne powered by a 3.0-L V6 TDI engine since February 2009.
Therefore, the answer is a 3.0 - L V6 TDI engine.