In addition to oil and fuel filter changes, a valve adjustment is mandatory every 10,000 -15,000 miles. Any 240D is very slow to accelerate on freeway ramps (my first Mercedes was a new 1983 240D - 4 speed - sold it within 1 year because it was dangerous getting on the So Cal freeways - bought a new 1985 300D - MAJOR difference). The trunk floor rust through would be a concern, there is probably other rust on the car.