LS4 Performance - 1998 Pontiac Grand Prix GTP Supercharged

what are the MPG's on this car? my gf's aunt might get one and she wants to know if its a gas gusler ......thanks
another thing, does it over heat with the supercharger or is it a great car all around?

http://www.fueleconomy.gov/feg/sbs.htm

i would say average 16-20 i had one and thats about what i got but we all know i beat on my cars

I have a 99 GTP and I get mid ot high 20's on the higway (doing around 75). In the city I get 18 or so. Before I got aftermarket rims I could get in the 30's on the highway if I took it easy

I have a 99 GTP and I get mid ot high 20's on the higway (doing around 75). In the city I get 18 or so.

X2....i had a 98 GTP with a few mods and still got those numbers.

thanks guys...ima go check out the car right now....

I had a 98 with CAI and a pulley. I used to get around 28-30 MPG on the highway and around 16 MPG in town.

they're good cars all around, just make sure the trans shifts nice, they are the weak link. Oh yeah I get Between 25-30 on the freeway depending on the weather, etc.