Total Complaints
2 filings
MERCEDES-BENZ G500 · model year
2 NHTSA complaints for this specific cohort.
NHTSA overall rating
Not crash-tested
New Car Assessment Program
The 2005MERCEDES-BENZG500 carries 2 consumer safety complaints in NHTSA's Office of Defects Investigation database for this specific model-year cohort. Within that volume, owners reported 0 crashes, 0 fires, 0 injuries, and 0 fatalities. No NCAP 5-star crash-test rating is available for this model year in the federal database.
Component-level analysis is where model-year complaints become actionable: the top complaint category for the 2005 G500 is electrical system with 1 filings, followed by service brakes (1). Concentration in one or two component groups is the classic signature of a systemic defect; a flat distribution usually reflects normal aging, warranty complaints, or isolated build-plant variability.
NHTSA currently has 15 investigation files overlapping the 2005 G500. Owners comparing this cohort against neighboring years should pair the counters above with the complaint-by-year trend on the parent model page — a spike in a single year often tracks to a platform refresh, a new transmission supplier, or an updated ECU calibration. Use the related-complaint feed below to read raw owner narratives before deciding whether any pattern here affects your specific use case.
Total Complaints
2 filings
Crashes Reported
0 reports
Source
NHTSA ODI
Federal complaints database
At or below the fleet median complaint volume.
| Component | Count |
|---|---|
| ELECTRICAL SYSTEM | 1 |
| SERVICE BRAKES | 1 |
TL* THE CONTACT OWNS A 2005 MERCEDES BENZ G500. WHILE DRIVING OVER 40 MPH, THE VEHICLE SHOOK VIOLENTLY. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHO DIAGNOSED THAT THE SBC PUMP MALFUNCTIONED. THE VEHICLE WAS PREVIOUSLY REPAIRED UNDER AN UNKNOWN MANUFACTURER RECALL RELATED TO THE SBC PUMP; HOWEVER, THE FAILURE RECURRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE ISSUE. THE APPROXIMATE FAILURE MILEAGE WAS 123,755. THE VIN AND NHTSA CAMPAIGN NUMBER WERE UNAVAILABLE.
Mileage: 123,755
THE VEHICLE HAS TURNED OFF BY ITSELF WHILE DRIVING AT VARIOUS SPEEDS. ENGINE TURNS OFF, ALL ELECTRICAL POWER INCLUDING POWER STEERING AND BRAKE ASSIST SHUTS OFF - WHEN THIS HAPPENS VEHICLE BECOMES VERY DIFFICULT TO OPERATE. TO REGAIN POWER, VEHICLE MUST BE SWITCHED TO NEUTRAL, COME TO A COMPLETE STOP, AND KEY NEEDS TO BE CYCLED OFF AND BACK ON. DEALER, MERCEDES BENZ OF WESTMINSTER IN COLORADO HAS NOT BEEN ABLE TO DIAGNOSE THE PROBLEM WITH A GREAT DEGREE OF CERTAINTY, ALTHOUGH THEY THINK IT MAY BE A DEFECTIVE IGNITION SWITCH. DEALER HAS CONTACTED MBUSA FOR THEM TO AUTHORIZE EXPLORATORY REPAIRS AT NO OR PARTIAL COST TO THE CUSTOMER, WHICH MBUSA HAS REFUSED. THIS IS THE SAME IGNITION SWITCH WHICH WAS USED ON 2005-08 MERCEDES C-CLASS AND HAS CAUSED A MYRIAD OF ELECTRICAL ISSUES AS DOCUMENTED BY VEHICLE OWNERS ON VARIOUS FORUMS SUCH AS MBWORLD.ORG AND BENZWORLD.ORG - MERCEDES HAS ISSUED A TSB FOR THOSE VEHICLES, BUT NOT FOR LOW PRODUCTION # VEHICLES SUCH AS A G500. *TR
Mileage: 23,000
Data as of 2025. Sources: NHTSA Office of Defects Investigation (ODI) complaints database, NHTSA recall campaign API, NHTSA NCAP crash-test ratings, and NHTSA FARS for fatality cross-reference.
Read our methodology — how this data is sourced, computed, and verified.