If you crash a vehicle during a test ride are you obliged to buy it?

If it was the dealers vehicle then no you don't legally have to buy it they have insurance for such a situation. However this was a consignment he was selling the vehicle for someone so you could be held liable by the owner for the repairs to the bike. the dealer insurance does not cover vehicles they do not own. My own personal thought you drove it you should pay for any damage done to the bike get an estimate see if the repairs will really cost $5000.