1991 Mercedes-Benz 300-Class Convertible - Reliability

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300SL Convertible (3.0L 6-cyl. 5-speed Manual)

Reliability Rating for 1991 Mercedes-Benz 300-Class Convertible by Identifix

Ratings Key Minimal Problems Moderate Problems Significant Problems
  Rating Comments
Engine Occasional problems on this vehicle are failures of the Cylinder Head Gasket, the Engine Control Systems Unit (MAS Unit) and the Electro-Hydraulic Actuator (EHA). Failure of the MAS Unit will prevent the vehicle from starting.

The cost to repair the Cylinder Head Gasket is estimated at $175.00 for parts and $702.00 for labor.The cost to repair the MAS Unit is estimated at $129.00 for parts and $26.00 for labor.The cost to repair the EHA is estimated at $187.00 for parts and $19.50 for labor.All prices are estimates based on $65 per flat rate hour and do not include diagnostic time or any applicable sales tax.
Transmission & Driveline
Steering & Suspension An occasional problem on this vehicle is failure of the Ignition Lock Assembly. Failure of the Ignition Lock Assembly may prevent the vehicle from starting.

The cost to repair the Ignition Lock Assembly is estimated at $65.00 for parts and $227.50 for labor. All prices are estimates based on $65.00 per flat rate hour and do not include diagnostic time or any applicable sales tax.
Brake
Heating & Air Conditioning This vehicle was originally charged with R-12 refrigerant which is no longer being manufactured.

The refrigerant is still available, but it is very expensive ($25.00-$50.00 per pound, 2-5 pounds per vehicle). Conversion to the new R-134A refrigerant is possible, at an average cost of about $100-$250 parts and labor. All prices are estimates based on $65.00 per flat rate hour and do not include diagnostic time or any applicable sales tax.
Starting & Charging
Accessories An occasional problem on this vehicle is failure of the Vehicle Rollover Sensors, and a periodic problem is failure of the Window Switches.

The cost to repair the Vehicle Rollover Sensors is estimated at $61.00 each for parts and $65.00 for labor. The cost to repair the Window Switches is estimated at $19.00 for parts and $71.50 for labor. All prices are estimates based on $65.00 per flat rate hour and do not include diagnostic time or any applicable sales tax.
Overall 4 out of 5

Reliability Ratings displayed above reflect style specific standard features and may vary from aggregated values displayed for the same year in the historical model overviewed bellow.

Reliability History for Mercedes-Benz 300-Class Convertible by Identifix

  1991 1993
Engine
Transmission & Driveline
Steering & Suspension
Brake
Heating & Air Conditioning
Starting & Charging
Accessories
Overall

Reliability Ratings by Identifix is based from repair shop-reported issues. Though this data may be for years prior to model you are researching, it exposes how reliable this model platform has been historically.

Portions © 2008 by Identifix, Inc. All rights reserved

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