"How reliable is the 1999 Mercedes Benz Ml320?"

"Based on 164 NHTSA complaints, the 1999 Mercedes Benz Ml320 has a median complaint mileage of 71500 miles. The most common issue is ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:BELTS AND ASSOCIATED PULLEYS."

1999 Mercedes Benz Ml320: Reliability Data

Q: "What are common problems with the 1999 Mercedes Benz Ml320?"

"The most frequently reported component in NHTSA complaints for the 1999 Mercedes Benz Ml320 is ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:BELTS AND ASSOCIATED PULLEYS, accounting for a significant portion of the 164 total complaints filed."

Source: NHTSA — 164 complaints

164

Total Complaints

71,500mi

Median Mileage

ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:BELTS AND ASSOCIATED PULLEYS

Top Issue

Crash Reports

When Do Complaints Happen?

Distribution of NHTSA complaints by vehicle mileage at time of report.

58,685 25th Percentile

71,500 Median Mileage

99,750 75th Percentile

What Fails?

Most reported component issues from NHTSA complaints.

ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:BELTS AND ASSOCIATED PULLEYS

STEERING:HYDRAULIC POWER ASSIST:HOSE, PIPING, AND CONNECTIONS

POWER TRAIN:AUTOMATIC TRANSMISSION

STEERING

VEHICLE SPEED CONTROL

FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP

ENGINE AND ENGINE COOLING:ENGINE

ENGINE AND ENGINE COOLING

STEERING:HYDRAULIC POWER ASSIST SYSTEM

ENGINE AND ENGINE COOLING:ENGINE:GASOLINE

Severity Assessment

Crashes

Fires

Injuries

Deaths

Sample Complaint Reports

"OWNER'S MANUAL STATES ON PAGE 59 'PRESS DOWN ROCKER SWITCH SYMBOLS: AUXILIARY FRONT FOG LAMPS ON (IF SO EQUIPPED). GREEN INDICATOR LAMP IN INSTRUMENT CLUSTER COMES ON. GREEN INDICATOR LAMP IN INSTRUMENT CLUSTER DOES NOT COME ON! DEALER SERVICE MANAGER TELLS ME HE HAS NOT SEEN THIS LIGHT IN ANY M..."

"CRUISE CONTROL STALK IS TOO LONG, MAKING ACCIDENTAL ACTIVATION OF CRUISE CONTROL LIKELY WHEN ACTIVATING THE RIGHT TURN SIGNAL. HITTING THE CC STALK WHEN MAKING A RIGHR TURN ACTIVATES THE "ACCEL" PORTION OF THE CRUISE CONTROL. THERE IS NO VISUAL INDICATION (DASH LAMP, ETC.) THAT THE CRUISE CONTROL ..."

"THE VEHICLES ENGINE CUTS OFF WITHOUT WARNING WHILE DRIVING. HAS HAPPENED 3 TIMES WITH OWNER, AND 3 TIMES WITH DEALER. DEALER CANT FIND A SOLUTION. *AK"

Source: NHTSA ODI Complaints Database. Names and identifying details omitted.

Data source: View this vehicle on NHTSA.gov | NHTSA ODI Complaints Database. Public domain.

Methodology: Complaint counts and mileage distributions are computed directly from consumer-reported NHTSA complaints. This data represents reported issues, not failure rates — vehicles without complaints are not represented. Full methodology.

Data through: 2026-03-28