1998-2005 Mercedes-Benz M-Class: Reliability
Updated: 11/23/08
2005 Mercedes-Benz M-Class
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1998-2005 Mercedes-Benz M-Class ▼
- Price Range: $5,400 - $21,300
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Our reliability study for this generation Mercedes-Benz M-Class includes details on average repair costs, manufacturer recalls, and everything you need to know to gauge the long-term reliability of this generation Mercedes-Benz M-Class .
Trouble Spots
Consumer Guide's® Auto Editors have scoured repair bulletins and questioned mechanics to search
for commonly occurring problems for a particular vehicle. In some cases we also give possible manufacturer-suggested
solutions. In many instances these trouble spots are Technical Service Bulletins posted by the manufacturer,
however, we have our own expert looking at additional vehicle problems.
Brake noise:
Brake squeal, especially in cold and damp weather due to incompatibility between the brake pads and rotors, for which revised pads are now available. (1998-03)
Check-engine light:
The white plastic gas tank vent valve fails triggering the check engine light. (1998-01)
Dashboard lights:
The "low range" warning light may glow in cold weather. Repair involves replacing the control module--part of a dealer service campaign. (1999-2000)
Engine knock:
A knocking noise from the accessory drive belt or water pump is caused by the idler pulley not providing even tension. A countermeasure pulley with a smaller diameter will correct the problem. (1998)
Engine misfire:
Engine roughness, miss, or stalling may be due to a damaged mass-airflow sensor (MAF). This dirt may be getting past the air cleaner due to a damaged gasket, loose cover or improperly installed air cleaner. (1998)
Fuel gauge:
The fuel gauge may not read full although the tank is full. The fuel-sending unit was being replaced under warranty. (1998)
Oil leak:
Engine oil may weep from the head gasket. Gaskets are being replaced under warranty. (1998)
Consumer Guide® Estimated Repair Costs
This table lists costs of likely repairs for comparison with other vehicles. The
dollar amount includes the cost of the part(s) and labor (based on $50 per hour) for the
typical repair without extras or add-ons. Like the pricing information, replacement
costs can vary widely depending on region. Expect charges at a new-car dealership
to be slightly higher.
| Item Name | Repair Cost |
| A/C Compressor | $915 |
| Alternator | $1,025 |
| Automatic Transmission or Transaxle | $910 |
| Brakes | $565 |
| Constant Velocity Joints | $1,750 |
| Exhaust System | $775 |
| Radiator | $810 |
| Shocks and/or Struts | $990 |
| Timing Chain or Belt | $515 |
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