In 1 word - Phenomenal!!! Saved my bacon by discovering an "advertised clean, no damage Carfax" 2011 Audi Q5 being sold by Audi Central Houston (DON'T BUY FROM THEM EVER) was in fact a rat infested and accident repaired car!! Electrical wires had been chewed (dealer hid this from me, but Bartuning discovered this by close and careful inspection ), and they showed me where paint work and repair had been done in 3, count them, 3 places. If Audi Central Houston (DON'T BUY FROM THEM EVER) had in fact performed all the 150+ checks they say they do, surely they would have know this (even the codes in the car diagnostics show the car had been hit in June). Money paid for pre-purchase inspection was well worth the investment.