My mother drives a 2.0 Vectra estate. Even with a rather insipid engine and an auto box, the thing is a menace on anything remotely twisty. I can't imagine how scary it would be with a big v6 up front.
Cheap car for the mileage really but I wouldn't call a 200 bhp heavy bus a sleeper. I had a 200 bhp Volvo S60 and it was brisk enough but again no sleeper.