Coming from a Grand Prix GT (3.8 V6) I am getting the same mileage in the city as I am in the SLOWcus (~23 mpg city). Seems to be reliable though. Trunk unlock is a PITA. Lifetime air filter. Sporty kinda. Get blinker & steering wheel controls confused. Ceiling compartment (sunshades, garage door) blocks part of view from rear view mirror if your tall (6 ft).
Spoiler, Steering wheel controls, MP3 6 CD changer, Fog lights.
Bigger backseat, Smaller antenna, Driver's seat pouch on back of seat! The SLOWcus has nothing on a Pontiac Grand Prix is all I will say. I won't be back.