Buying off car gurus from private seller

None other than your common sense. You can hire an inspector if you want, Try Lemon Squad.

I also had a bad experience with Lemon Squad. I had an inspection done, but had a feeling that the quality was just not there (they had missed some obvious scratches and the car had some vibrations that I felt were outside the norm for the vehicle). Brought it in to a local mechanic about 3 weeks after their inspection and found that I needed 2800 dollars in repairs. When I asked for a refund Lemon Squad told me since it was after 14 days I could take a hike. They really don't stand behind their inspections.