Maintenance costs 500 SEC

Hello! In advance: I don’t know much about the 126 series. About me: My name is Andreas, am 17 years old and I currently have a 230 CE (W124), Vormopf, EZ 1989, 180 tkm, 3. Hand [not yet registered, as only accompanied driving is possible (nerves…)]. I live in rural area and drive about 8.000 km a year. Approx. 70-80% rural road. City 20-30 %. Highway in everyday life is not at all. I find the C126 simply unbelievably beautiful, for my terms this is the most beautiful coupé all r times, so I seriously think about replacing the E-Class with the S-Class (with 17 certainly not quite usual). The purchase would be less the problem, rather the maintenance, maintenance and repair costs cause me severe headaches. It would be possible that I run the insurance over my grandmother (30%, never an accident). What costs can I expect about? Consumption with a dignified driving method 15-17 l? The taxes for this thick Benz should and be the absolute usury, especially without KAT, right? Many greetings from the Bavarian Straubing Andreas PS: I prefer it to be in 040/199 with beige/grey leather, cruiser & rear blind. With the rims I think of highly polished/glossy 16″ Gulli cover from Lorinser. Dreaming is allowed.. 🙂