Acura TSX is getting a V6


For the 2010 model year, the smallest Acura will get a 3.5 Liter V6 with 280hp.
More than enough for a car this size.
I guess they gave up on trying to be different by offering a 4 cylinder in a class where almost everything else has a V6.
The 2.4 Liter is still available as a base model.