I owned a 84 Daytona turbo and it was the biggest piece of crap. The damn thing spent most of its life on the hook.
I had the exact same issue with a MB450SL. I still rank it among the worse cars I ever owned.
It was the only MB I ever owned, and it was terrible. Bad enough, in fact, that I'd never even considered another.
Also, I had a 1990 Accalim as a company car I had it for 16 months. The company decided it was too costly to own. The cost per mile of this 4 cyl. FWD "economy" car was greater than full sized V8 Chevy truck it replaced. Within a 16 month period, the car spend 17 weeks at the local Dodge dealer for one thing or another.
It was towed in 6 times in 17 months, and it cost 6 hotel nights over 4 different occasions when I got stranded out of town and had to wait for the car to be repaired.
Everything, from crap as stupid as a transmission cooling line to a wheel bearing, to to a seal on the rack and pinion, to a "no start" situation, to the transaxle not shifting into OD, to losing first gear, intake manifold vacuum leak, loss of rear breaks, and a bunch of other crap.
The company decided that the cost of operation of that car was just too high, and after 16 months, I was told to trade it for another car or truck. I opted for a 1992 Ford Crown Vic LX. It was excellent. Besides normal service, I had no break downs, no repairs and no down time, I had the CV for 40 months, no issues whatsoever. btw, The cost of operation of the Crown Vic was slightly less than half of the Acclaim's, and I drove it 2 1/2 times longer.