Longevity Ford Mustang V?

Hello all, I slowly save myself towards Mustang V and would be pleased about information regarding the longevity of engine, transmission and body. I noticed that on the trading platforms there is a Ford Mustang GT500, 4-5 years old, about 50,000 km, already around the 30,000 Euro. If this were a 500 Mercedes, I would say that is still good for 200,000 km and another 10 years. However, with the new Muscle Cars I lack any experience. Could also be that only d he has charged V8 problems and the normal is indestructible. What do you hear?