My 2014 BMW 528i was hit by a drunk driver and totaled. While I was parked. I found another car exactly like it that I really like but when I went to test drive it today, it had a very slight exhaust smell while idling at a stop light. The tech told me it was just oil burning off after servicing it. I don’t believe that.

Is this a big deal? Would you buy a car with this issue? It’s a seemingly good deal otherwise.