A 200-horsepower 3.8-liter V6 engine provides power for the base model while the GT gets a supercharged version of the same engine. Both pull fairly strong off the line, but...
the GT clearly has the advantage as soon as the rpm needle passes 1500. You'll find that the GT's 17-inch wheels and tires provide the Grand Prix with good reflexes while still delivering a surprisingly smooth and quiet ride.
More aggressive handling (not to mention pin-you-to-your-seat acceleration) comes with the V8-powered GXP, which feels so connected to the road you might easily be fooled into thinking this is an all-wheel-drive car. It's not, of course, but for a front-drive sedan
of this size and performance level the handling is remarkably good.