I agree...

...these cars are reliable, but truthfully most owners treat them as pampered daily drivers or weekend-only cruisers.

And yeah, even if the car holds up to rigorous high-mileage usage, replacement parts are not cheap, and serviceability is much more difficult considering the limited space in the various compartments throughout the chassis.

There are far more serviceable MB models to choose from to serve that kind of duty.

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2009 ML350 (106K) - Family vehicle
2001 CLK430 Cabriolet (80K) - Wife's car
2005 BMW 645CI (138K) - My daily driver
2016 Mustang (32K) - Daughter's car