Sold as seen, reciept given, signed by both buyer and seller, cash exchanged.
Sold as seen, means what it says! If your friend did do the repair, then i would get it on paper x2 what he has done, and forward one copy to the trader, IF NEED BE.
Who's to say he hasn't fiddled with the car for some reason after buying it from you, OR JUST BAD LUCK.
Yes he can go to a small claims court, but this seems very unlikley at the minute, and i dont think a judge would take this minor civil dispute serious enough.
Who will really know what happened to the vehicle after the sale?
Th