Which older Mercedes is robust?

Hello, I am an absolute Mercedes newcomer and would need advice from Mercedes specialists. And I want a used Benz best a station wagon. Now my question, regardless of the price or the kilometers which older Mercedes class is to be recommended with which one can drive even far more than 150,000 km calmly to the Baltic Sea on holiday (700 km) without which one will be afraid and anxious, which gets something broken on the road. I wanted to be an absolute Benz newcomer a vehicle of And it would be nice if it were an automatic transmission, if you now say what has more than 100,000 km on it, the automatic can quickly break down, then I will leave the fingers of it. Which Benz is quasi indestructible ? Oh yes and it would be nice if jrmand could tell me which equipment lines there are at mercedes ? Many thanks in the v orraus Mfg Michael