"How reliable is the 2008 Mercedes Benz S550?"

"Based on 25 NHTSA complaints, the 2008 Mercedes Benz S550 has a median complaint mileage of 70000 miles. The most common issue is TIRES."

"What are common problems with the 2008 Mercedes Benz S550?"

"The most frequently reported component in NHTSA complaints for the 2008 Mercedes Benz S550 is TIRES, accounting for a significant portion of the 25 total complaints filed."

2008 Mercedes Benz S550: Reliability Data

Source: NHTSA — 25 complaints

Total Complaints

70,000mi

Median Mileage

TIRES

Top Issue

Crash Reports

When Do Complaints Happen?

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

57,000 25th Percentile

70,000 Median Mileage

91,000 75th Percentile

What Fails?

Most reported component issues from NHTSA complaints.

TIRES

ELECTRICAL SYSTEM

FUEL SYSTEM, GASOLINE

POWER TRAIN

SUSPENSION

ENGINE

SERVICE BRAKES, HYDRAULIC

EQUIPMENT ADAPTIVE/MOBILITY

EQUIPMENT

WHEELS

Severity Assessment

Crashes

Fires

Injuries

Deaths

Sample Complaint Reports

"I HAVE 2008 MERCEDES S550. THE CAR SUDDENLY STARTED MAKING NOISE IN THE FRONT AND I CALLED DEALERSHIP. THEY TOLD ME THE BRAKES ARE GONE AND EVEN ROTORS ARE DAMAGED. I HAD NO INDICATION ALL THIS TIME I WAS DRIVING THAT THE CAR HAD NO BRAKES AS NO BRAKELIGHTS CAME ON. TILL THE TIME I WENT TO DEALERSHI..."

"I GOT A BLOW OUT IN THE REAR LEFT SIDE TIRE. I WAS DOING ABOUT 40 MPH AND DID NOT GO OVER ANYTHING THAT I WAS AWARE OF. I WENT TO CHANGE THE TIRE USING THE SUPPLIED TIRE AND JACK. THE JACK WAS VERY FLIMSY AND AFTER I RAISED THE VEHICLE THE JACK FLIPPED OVER CAUSING DAMAGE TO MY CAR, HOWEVER I NAR..."

"CAR STALLED WHILE DRIVING ON 10 FWY GOING FROM AZ TO CALIF. WOULD NOT RESTART & WAS TOWED TO PALM SPRINGS MBZ. NOT OPEN TIL MON 27TH. *TR"

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