Beginner’s Everyday Oldtimer

Hey guys, first of all, don’t be mad at me if I’m doing something wrong, I’m new here. I’m a 17-year-old student. I’m doing my Abi next year and I wanted to start a mechanical engineering study. My hobby is screwing moped-oldtimers and so I’m currently entering my 4th moped. I just say that I’m technically quite talented. Since I don’t like modern cars with the many plastic and I’m getting low speeds, even out of love to the cars, I don’t need a big technical snap and want to identify myself with my car, so that I also have fun at screwing, I search for a vintage car from before 1975 which is as robust, reliable and cheap as possible in the maintenance. I think to buy one now next year and calculate for the purchase up to 6000 Euro. My first love was born the W110 200D from Mercedes. But that is unfortunately too expensive for me. Since I after something soldiem with low underpants. I quickly came to the beetle via the call. However, with more detailed reading and price research, my interest is increasingly removed from the beetle. Afterwards I looked at the cadet B if possible coupé and discovered the days also the Peugeot 404 as very positive, whereby I like the Peugeot much better. My question you know cars which could come into question or have her experience with the longevity or reliability of the cadet and the Peugeot, because he likes how to consider hnt should also be suitable for everyday use. How expensive do you estimate the monthly maintenance costs for a classic car with H-mark? Thanks already once in the previous mfg Simon