Utilize your financial knowledge, give your answer or opinion to the input question or subject . Answer format is not limited.

Why do 10 year-old luxury cars lose so much value?
I believe one of the main reasons cars -- luxury or otherwise -- depreciate so quickly is that many auto accidents can cause serious engine/frame damage but are easily cosmetically repaired.  If you smash up the car but get the body fixed, and you don't go through insurance, it will be indistinguishable from the same car that hasn't been in a crash.