Mercedes-Benz C450 problems and owner complaints
Explore the records behind recurring owner reports.
Key facts
19 owner complaints analyzed
5 distinct recall campaigns
35,511 mi median reported failure mileage
Scope: 2016 to 2017 model years. Data snapshot: . 9 complaints include usable failure mileage.
This selection has limited data. It remains available for lookup but is excluded from search indexing.
Most common problems
Unknown Or Other is the most frequently named component, appearing in 6 of 19 complaints (31.6%). A complaint can name multiple components.
| Topic | Matching reports | Share of complaints |
|---|---|---|
| Electrical and battery issues | 2 | 10.5% |
| Transmission and shifting | 1 | 5.3% |
| Steering behavior | 1 | 5.3% |
Topic matches use published keyword rules. They describe mentions, including negations or comparisons, and do not confirm a diagnosis. Read the matching rules.
Component breakdown
Number of unique complaints naming each component. Top eight shown.
| Category | Count |
|---|---|
| Unknown Or Other | 6 |
| Wheels | 6 |
| Electrical System | 4 |
| Structure:Body | 4 |
| Steering | 2 |
| Power Train | 1 |
| Visibility:Sun/Moon Roof Assembly | 1 |
| Visibility/Wiper | 1 |
Unknown Or Other: 6; Wheels: 6; Electrical System: 4; Structure:Body: 4; Steering: 2; Power Train: 1; Visibility:Sun/Moon Roof Assembly: 1; Visibility/Wiper: 1
Reported problems by failure mileage
Complaint counts in mileage bands. These are not failure rates per vehicle or mile.
| Category | Count |
|---|---|
| Under 25,000 | 3 |
| 25,000 to 49,999 | 4 |
| 50,000 to 74,999 | 2 |
| 75,000 to 99,999 | 0 |
| 100,000 to 149,999 | 0 |
| 150,000 and above | 0 |
Under 25,000: 3; 25,000 to 49,999: 4; 50,000 to 74,999: 2; 75,000 to 99,999: 0; 100,000 to 149,999: 0; 150,000 and above: 0
25,000 to 49,999 miles has the most reports with usable mileage (4). 10 complaints have missing, zero or invalid mileage.
Complaints over time
Year the complaint was filed, not the vehicle model year or incident year. The snapshot year is partial.
| Category | Count |
|---|---|
| 2016 | 1 |
| 2017 | 1 |
| 2018 | 1 |
| 2019 | 3 |
| 2020 | 2 |
| 2021 | 4 |
| 2022 | 1 |
| 2023 | 2 |
| 2024 | 2 |
| 2025 | 1 |
| 2026 | 1 |
2016: 1; 2017: 1; 2018: 1; 2019: 3; 2020: 2; 2021: 4; 2022: 1; 2023: 2; 2024: 2; 2025: 1; 2026: 1
Pattern summary
Unknown Or Other leads the component reports. Electrical and battery issues appears in 2 complaint narratives. Transmission and shifting appears in 1 complaint narratives. Steering behavior appears in 1 complaint narratives. Use these patterns to inspect individual reports and prepare questions for a mechanic.
Calculated from recorded counts. An AI narrative has not been published for this selection.
Complaint evidence
Examples provide context, not a representative sample or a verified diagnosis.
Owner report 11164987 · 2019-01-07 (January 7, 2019)
WHILE DRIVING DOWN THE 405 FREEWAY VEHICLE LOST POWER STEERING ASSIST AT 65MPH, VEHICLE STEERING WAS VERY HARD TO STEER & STEERING WHEEL LIGHT ILLUMINATED ON THE DASH HAD TO FIGHT WITH THE STEERING TO PULL THE VEHICLE OFF TO THE SIDE OF THE FREEWAY. TRY TO RESTART VEHICLE ALL LIGHT CAME ON NO-START. BATTERY CABLE HAD TO BE REMOVED WAIT 30MIN AND VEHICLE RESTARTED. TOOK THE VEHICLE TO THE DEALER IN BEVERLY HILLS, DEALER DIAGNOSIS AND FOUND SOME DTC'S CODES AND RESET AND RETURN VEHICLE
Owner-reported narrative. 25,070 miles reported. Look up ODI 11164987 at NHTSA ↗
Owner report 11418014 · 2021-05-21 (May 21, 2021)
The panoramic sunroof does not properly seal to car, allowing the glass to detach and fall from the vehicle during operation and likely to impair the operator during use. Furthermore, without properly sealing the internal cabin is exposed to the environment (i.e. rain, snow, ect.) causing further damage to the internal safety and electrical features.
Owner-reported narrative. Look up ODI 11418014 at NHTSA ↗
Owner report 11736177 · 2026-05-06 (May 6, 2026)
Sudden fracture of the propeller shaft universal joint at freeway speeds causing catastrophic damage to the transmission and exhaust system. This matches the failure described in NHTSA Recall 26V216. While driving on Arizona Freeway 202. Extreme clanking noise heard and lost all power in middle of rush hour. Barely able to navigate vehicle safely off the freeway. No warning whatsoever. Had to be towed to Mercedes Benz Gilbert where documentation provided as to failure.
Owner-reported narrative. Look up ODI 11736177 at NHTSA ↗
Recalls by model year
All campaigns in the snapshot affecting each model year, including recalls announced years later.
Recall campaigns
Shared campaigns appear once in each affected model year.
| Category | Count |
|---|---|
| 2016 | 5 |
| 2017 | 1 |
2016: 5; 2017: 1