Better be a good mechanic. head gaskets can be a problem... Depending on the year, if the wiring harness hasn't been redone, don't touch it with a 10 foot pole, unless you have an extra $600 and the knowledge to install it... Ball joints and tie rods can be an issue every 60k...
The T hose just behind the engine on the drivers side has a problem with having the plastic break... Leads to big problems if you don't shut the car down in time...
Depending on the year, the Tranny can have issues... 97+ is better...
What options does this car have??
The duovalve can sometimes have problems with one side not opening... requires replacement of the whole assembly...
Evap core was a huge problem.... And really expensive time wise to fix. If you can DIY, it's not bad money wise....
Other than this list, it's a pretty damn good car.... I like mine...

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All it takes for evil to prevail is for good men to stand by and do nothing.

Too many people tip toe through life, never attempting or doing anything great, hoping to make it safely to death... Bob Proctor

'95 S320 LWB
'87 300SDL
'04 E500 wagon 4matic