I recently had my front shocks replaced at a local repair shop - not at a MB dealer.

Ever since the shock replacement (with a generic brand), however, the car makes a thump noise from the right front side every time I go over a bump driving at 20 - 40 mph. Any speed below 20+/- or over 40 +/- does not produce the noise. The left side does not make any noise. I went back to the mechanic, who upon detailed inspection, found nothing wrong.

Any leads?