In short there is only ONE thing to do for a layman, NOT buy a car without a verifiable auction sheet.
You will waste your hard earned money if you buy something of which you dont know the exact condition of, car inspections DO NOT tell you the complete story, so dont fall for this trap.
Keh, "Sir Auction Sheet nahin aae thi saath, aap Car Inspection karwa laen sirf aik fender touch hae."
This is a very clever fraud, as car inspectors cannot usually detect failures in Hybrid systems or tell that the car is water damaged, I have seen that infront of my eyes too many times to recount.
But if you still buy such a car, well then, nothing can be said.
wassalaam