<prompt> Human: I had a reputable mechanic that I found online install new suspension and roll my fenders on my Honda s2000. After he installed everything and put my wheels back on, assuring that it was ready to drive, I took it for a cruise around my block with my little brother. As I was driving on a small street, after about 5 minutes, the front left wheel literally fell off and I came to a screeching halt. My rotor was on the ground. Front left fender destroyed. The wheel now has 5 massive holes on the inside from the mounting bolts. I was driving below 20mph. He is aware of what happened.Its clear that the wheel was not torqued down properly at all. But its scary to think that if I had gone on the freeway or a bigger street, my brother and I would have been completely fucked. Were lucky that this was not the case, as is the mechanic.Luckily, I havent paid the guy in full. Ive only given him 100 dollars of the 450 he was charging. The reason why Im posting in this subreddit is because Im wondering how I should proceed, financially. Should I open up an insurance claim? Or first see of hes willing to cover the costs? And should I still pay him in full for his services after what happened? Ive never had to deal with circumstances like these so Id greatly appreciate some advice. Thank you!  <response>: Start by assuming hes honest, and that he screwed up, it happens. Talking to him should get a pretty fast resolution.Dont pay him until hes finished all the repairs.He should cover the cost of the repairs to your car, it was his mistake. If hes part of a high-end shop, he should even offer you a loaner.There should be a lot of parts that need to be replaced in this situation. The rotor, the lower ball joints, possibly the knuckle, in addition to all the exterior panels that took damage, and any supports that took damage. Look and see what parts hit the ground. Every part that hit the ground pretty much has to be replaced.Now if hes less honest, there are routes to getting this fixed. Hell should have professional liability insurance. 