My 5 year old son drove the Extreme Buggy XL 4x4 it on our flat gravel driveway and mostly flat grass yard. Three motors failed and the fourth caught on fire. Company claimed he was too rough on the car and now we can purchase replacement parts. I've emailed and followed their guidelines, but they have offer no options for a real solution. Do not purchase this vehicle. It may catch on fire and no one wants their child to drive a death trap.