See if you can get photos of the spring perch area for both front springs as they fail and can cause huge problems. Fixing only one of them is about
$850. Also - I bet the motor mounts are shot and don't forget this has the 'sealed for life' transmission - see if it has been serviced for it too. Glow plugs seize up all the time too and snap off when taking them out.

The dented door is the least of your worries on this car.... I know - i've got one

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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