Hi I saw a horror movie about 20 years ago and want to find it but ive no idea what its called or who's in it etc.

All I know is that is got something to do with a group of teenagers / students who go to some haunted mansion and end up dissappearing one by one, being killed by a zomie/ghost dude.

Heres the crucial bit...at the end there's one girl left and she ends up killing the bad guy by driving into some spiked railings / gate whilst he's on top of the car and impaling him outside of the building.

Please help as i think it was the first horror movie i ever watched, when i was about 8 years old.

Thanks everbody in advance