26 Columbia Circle
Merrimack, NH 03054 US.
Mon - Fri 8AM – 5PM
Weekends by Appointment

Mercedes Repair Merrimack, NH

HM Motor Works is an independent Mercedes-Benz service center. We work on all Mercedes (Bluetec and standard engine / drivetrain) sedans, coupes, and SUVs including regular maintenance, advanced diagnosis, repairs of broken systems and projects.


Below is the regular service we perform for your Mercedes-Benz at key mileage intervals
7,500-Mile Maintenance

Recommended at 7,500-mile intervals for gasoline engines and 5,000-mile intervals for pre-1995 diesel engines

Services performed:

  • Change oil and filter
  • Inspect brakes for wear
  • Lubricate throttle linkage
  • Check and correct fluid levels
  • Inspect tires and check tire pressure
  • Lubricate specific parts according to Mercedes-Benz guidelines

30,000/60,000/90,000Mile Maintenance

Services performed:

  • All services included in the 15,000-Mile Maintenance Service, plus:
  • Change automatic transmission fluid and filter
  • Replace air filter
  • Replace spark plugs
  • Inspect propeller shaft flex coupling
  • Inspect parking brake for free play
  • Replace diesel pre and main fuel filters*
  • Perform a road test

* 60,000-mile intervals.

Note: Ventilation/dust filters recommended for replacement on some models (please refer to your Maintenance Manual). Your service advisor will advise you if applicable.

15,000/45,000/75,000/105,000Mile Maintenance
Recommended at 15,000-mile intervals for 1997 and earlier models only

Services performed:

  • All services included in Lubrication Service, plus:
  • Inspect for leaks and assess the condition of all components, lines and hoses on the engine, transmission, axles, level control, and steering, fuel and brake systems
  • Replace spark plugs (if necessary)
  • Inspect air filter elements
  • Remove wheels and rotate tires as necessary
  • Inspect brake system and adjust parking brake
  • Check all exterior and interior lamps and windshield washer systems
  • Lubricate throttle shafts, door hinges and locks
  • Replace windshield wiper blades
  • Clean cassette deck head
  • Replace air filter
  • Perform a road test