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 at low speeds (under 10 mph) may activate the antilock brake system. (1994-97)

Clock: The clock on the C220 may reset itself when starting the engine due to a faulty instrument-cluster voltage regulator. (1994)

Dashboard lights: The EC warning light may come on indicating loss of A/C refrigerant caused by a faulty refrigerant pressure sensor. (1997)

Fuel gauge: Erroneous fuel-gauge readings are often due to a bad potentiometer on the fuel-level sensor. (1994-96)

Hard starting: The starter may corrode due to the windshield water draining onto it. (1994-96)

Rough idle: Mass airflow sensors (MAS) malfunction could cause a variety of performance problems including rough idle when cold and off-idle hesitation. (1994-2000)

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.

1994 C220: Cruise-control linkage may be inadequately lubricated, subject to binding, so throttle will not return to closed position when pedal is released.

1994-95 C220/C280, C36: In minor frontal impact, hood-latch hook may not function properly as secondary safety catch.

1996 C280: Drive-belt pulley of a few 6-cylinder engines can develop fatigue cracks and break; car would then lack engine cooling, battery charging, and/or power steering.

1998-99 w/Hoppecke battery: Battery-maintenance schedule could be less than needed to maintain proper electrolyte levels. Low electrolyte levels could result in battery explosion.