MERCEDES CLK

When cold starting the engine, listen closely for a slight rattle from the front of the block; it's worth checking if the timing chain tensioners have been serviced, as this is a known area of interest in the M113 engine.

Cycle through the 5-speed automatic gearbox while in manual mode. It is helpful to feel for any hesitation or 'hunting' between gears, which can sometimes indicate that the transmission fluid or conductor plate may need an inspection.

While parked on a flat surface, observe the vehicle's stance. These models feature complex suspension components, so checking that it sits level is a good way to see if the bushings or shock absorbers have been maintained over the years.

Engage the climate control and verify that the airflow transitions smoothly between zones. The vacuum-operated flap actuators in these older luxury coupes can sometimes become sluggish, so ensuring all vents work as expected is a smart move.