Copart Jeremy Joseph Spencer Long Ernie Carrasco Billy Lawton Jay Adair This company sold me a car saying no engine damage but after 3 different shops we find there is engine damage. Now I see they have a long history of misleading customers. dfw texas

You bought a car from an auction, AS IS.  That means it's on you to determine what condition it's in.  Cars sent to auction are rarely in fully functional condition, since dealerships prefer to hold on to those cars for themselves.

Since the car did run (however poorly), and since it took you weeks to determine that the engine had a problem, I doubt you would have any traction in accusing the auction house of fraud.  They don't have a crystal ball and they don't spend any significant time diagnosing any specific car beyond very cursory checks.  This is why most states prohibit individuals from buying cars at wholesale auctions and require a dealer license to do so.  This is also the reason why cars sold at auction are much less expensive than the same car on a dealer lot.

If you want a car with a guarantee, buy a certified pre-owned one from a dealership and make sure it comes with a warranty.  Othewise, you assume the risk when buying something AS IS.  And buying a 10-year-old Mercedes is just dumb.  Luxury cars can be assumed to be reliable for about 5 years.  At 10 years old, a Mercedes or BMW is ready for the junkyard.  You might get another 2-5 years out of one, but only if you spend thousands of dollars on repairs every year.