Watch Pierre Hedary's You Tube videos to learn more about what an old Mercedes costs to get it running well and fix lots of stuff. He says expect 25K easily most cars.
https://www.youtube.com/channel/UCDTOh7Fk-QSSpi24UJIcs5AFrom my experience my documented low mileage Pagoda (43,000 mile) has cost me over 20k in repairs. Transmission going out was 1/4 of that.
I didn't paint it or replace the interior. Lots of mechanical items that you just have to do. See my list below lots of things.
2/5/12 Muffler adjustment instal Roberts Muffler $75.00
4/16/12 Transmission Fluid and filter Foreign Affairs 40.798 $208.94
4/16/12 Brake System Flush and Fill Foreign Affairs 40.798 $112.00
4/16/12 Oil / Filter Change 5W 30 Foreign Affairs 40798 $44.95
4/23/12 Replace heater levers K and K Manufacturing 40.798 $235.00
5/10/12 Tune up parts Muffler Buds Benz Mercedes $828.00
6/14/12 Coco mats front rear trunk mats Coco mats 41,500 $506.40
6/14/12 Verdestein Tires Black Forrest 41,500 $605.00
6/14/12 Original radio restoration 41,500 $395.00
7/19/12 Body work repair / paint rear install weather-strip / whiskers Euro Specialty 41,500 $2,718.68
7/30/12 Install tires Spee Dee 41,500 $111.61
8/1/12 Spark Plug Wires, Plugs, Dist Cap, Rotor, Points Buds Benz Mercedes 41,500 $130.00
10/17/12 Fuel Cap Classic Center 41,500 $155.00
10/17/12 Front grill chrome surround Classic Center 41,50. $1,360.00
12/5/12 Improve Idle Sports Car Clinic 41500 $1,887.91
Adjust Valves, Replace Oil Pan Gasket and Crankshaft Seal $1367 Labor disc. $911 from original
Speedometer cable, diff boot repair, replace engine mounts $459 Parts
replace transmission mounts, new hardware exhaust manifold
hook up idle solenoid wire corroded, Install radio
Install Plugs, Wires, Rotor, Cap and Points
3/13/14 Hose Clamps, Engine hoses, Buds Benz Mercedes. $378.00
4/10/15 Transmission overhaul $4,000.00
1/18/17 Rebuild Tachometer Overseas Speedometer $144.75
2/23/17 New Brake Booster Rockauto $117.78
3/20/17 Pressure Wash frame Certified Car Care $175.00
3/24/17 Dash Speaker Fuel filler hose Authentic Classics. $120.36
4/21/15 Instal Transmission Sports Car Clinic $1,126.39
4/14/17 Differential Mount Buds Benz Mercedes $167.00
5/11/17 Remove power steering pump over haul re-instal, Fuse issue, Idle work Sports Car Clinic $1,984.40
5/25/17 Rebuid radiator and instal. Change oil Sports Car Clinic $1,648.60
Maintenance since Preston Purchase
Total Spent $19,736