Most used vehicle buyers get a "neutral" 3rd party to PPI (this 3rd party has no financial interest in under/over stating condition).

If the shop said it was an "awesome" vehicle, you should have used that to your advantage, have them put a 90 day powertrain warranty in the purchase contract.

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'03 X5 4.4 Sport, last of the M62s (8-03 build date)
I believe in deadication to craftmanship in a world of mediocrity!