I did not read all replies thoroughly - please forgive if I repeat something here. I have '99 E300 TD. Rust bucket? yes. Fast? Yes. Good mileage? Yes. Serious lighting problems and electrical ghosts? Yes. Glow plug problems that cost over $ 800 to fix? Yes. It is in the shop as we speak for various problem. It is half the car my '94 E320 wagon was. I would go with newer technology here. My opinion.

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dtf
1994 E320 Wagon (Died @ 308,669 miles)
1995 E300 Diesel (228,000)
1999 E300 Turbodiesel ( died @ 255,000)
2006 Toyota Tundra SR5 AC 4X4 (115,000 miles) rusted frame - sold to chop shop
2011 Audi A4 Avant (165,000 miles) Seized engine - donated to Salvation Army
BMW 330 xi 6 speed manual (175,034 miles)
2014 E350 4Matic Wagon 128,000 miles
2018 Dodge Ram 21,000 miles