Replacement for Mercedes w202 C220 Cdi

Hello, the Benz from my grandpa gammelts him already under the ass away. Rust is sanded away, tank tape is sprayed over and with silver. He drives the thing since ́96 and has several kilometers down. Next year he will however not come over the TÜV. However, he does not want to buy a new car, because he thinks it would not be worth it any more. Therefore it should become a used one. He drives his whole life already BMW or Mercedes and wants to stay there. It should be just like a diesel with automatic and seat heating. With all the bugs that the current car has in the back, a parking aid would not be bad, because he can no longer estimate it so well, even if he thinks that he does not need such a thing. Therefore no bigger car like E or S class. He would like to keep his w202. Since my grandpa lives alone he often visits his siblings or friends, who live across Germany, therefore he also gu The car should therefore cost -under 10,000€ -diesel comparable to the C220 Cdi, he means he has around the 120hp -Not too big -Limousine -Good in maintenance -Sparsam -ZURLÄSSIG -Automatik -Green badge?! and in the best case with -Parking aid -Tempomat -Sitzheizung I am looking for mobile with just such data the cars have all already 150-200.000km on the speedometer. Is it recommended to buy a car with such high mileage and if so, which model can be t recommend it to you? As already said, he is constantly on the road and has scrubbed in the last 20 years with the box over 500,000km. Apart from the rust and wear parts has never been big on the car. Should his last car be that he buys so he wants to drive it for a few more years. Greetings