Purchased three of these at Christmas. Horns and lights did not work on but one, another was missing keys when delivered, luckily interchangable. Within 5 days, one four wheeler had a faulty throttle and quit, the drive train fell out of the other with bolts going everywhere, and the third had two bald tires which burst! All this before the new year turned. I contacted the company, and they offered assistance by sending a box of parts in the mail. However, they offered no assistance on actual repair, telling me that "any man can do it with a few tools". After several hours and a visit to the tire shop, I fixed the bikes and they seem to work fine for now. I obviously question the quality of the product and be aware return shipping is not an option b/c these bikes are heavy and it would be cost prohibitive. I would buy at a store where I could take back if needed. Good luck.