330 bhp 3.5 litre v6, but thats the racing car.
On the strength of their experience in the Japan GT Championship, the engineers from Nissan Motorsport, who supply the engine, have boosted the power of the V6 unit used on the Vel Satis and Espace to 330bhp. Compared to the production engine, only the semi-wet cylinder liner, the connecting rod bolts, the camshafts, the valves and the manifolds are specific to the competition version. The last bit is from renault-sport.com.