2017 Mercedes-Benz C450 problems and owner complaints
Explore the records behind recurring owner reports.
Key facts
3 owner complaints analyzed
1 distinct recall campaigns
9 mi median reported failure mileage
Scope: 2017 model year. Data updated: . 1 complaints include usable failure mileage. View data status.
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 1 of 3 complaints (33.3%). A complaint can name multiple components.
Component breakdown
Number of unique complaints naming each component. Top eight shown.
| Category | Count |
|---|---|
| Unknown Or Other | 1 |
| Visibility/Wiper | 1 |
| Wheels | 1 |
Unknown Or Other: 1; Visibility/Wiper: 1; Wheels: 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 | 1 |
| 25,000 to 49,999 | 0 |
| 50,000 to 74,999 | 0 |
| 75,000 to 99,999 | 0 |
| 100,000 to 149,999 | 0 |
| 150,000 and above | 0 |
Under 25,000: 1; 25,000 to 49,999: 0; 50,000 to 74,999: 0; 75,000 to 99,999: 0; 100,000 to 149,999: 0; 150,000 and above: 0
Under 25,000 miles has the most reports with usable mileage (1). 2 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 |
|---|---|
| 2017 | 1 |
| 2023 | 1 |
| 2024 | 1 |
2017: 1; 2023: 1; 2024: 1
Pattern summary
Unknown Or Other leads the component reports. 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.
Vehicle analysis explorer
Inspect model-year patterns, reported mileage, monthly activity and the evidence behind each signal.
Data completeness
3 unique complaints in this selection. Analysis snapshot: 2026-10-01.
Missing, zero and invalid mileage is excluded. Dates after the snapshot are excluded. Examples are limited selections, not a representative sample.
Problems by model year
Model-wide comparison of the eight most reported components across the model. Cells show counts and shares within each model year. Open a cell for source examples.
| Component | 2016 | 2017 |
|---|---|---|
| Unknown Or Other | 531.3%ODI 10873656 · 3,000 miSINCE THE PURCHASE OF OUR 2016 MERCEDES IN DECEMBER OF 2015, WE HAVE BEEN EXPERIENCING THE WARNING DISPLAY OF THE TIRE PRESSURE ON NUMEROUS OCCASIONS. THE FIRST OCCURRENCE PRIOR TO TAKING IT TO A DEALERSHIP MY WIFE TOOK IT A LOCAL TIRE SHOP WHERE THE OWNER PUT AIR IN THE TIRES AND THE LIGHT WENT OFF. IT OCCURRED SEVERAL MORE TIMES AND I ALWAYS WENT TO LOCAL GAS STATIONS AND PUT AIR IN. AFTER GETTING FRUSTRATED WE DROVE TO THE DEALERSHIP IN VALENCIA CALIFORNIA SHOWED THE SERVICE ATTENDANT THE ALERT ON THE DASH. HE RETRIEVED AN AIR PUMP AND P… | 133.3%ODI 11612144The glass on the panoramic sunroof exploded/shattered under normal driving conditions. It was raining but not too heavy. It didn’t appear that anything hit the glass and no potholes were hit. It seemed to be due to pressure or temperature which caused the explosion which sounded like a loud gunshot and the glass was in pieces. There were no injuries as the sunroof shade was closed and thus the glass fell on the shade. It has not been inspected by dealership or insurance as closed on Sunday and today due to Labor Day, but yes it is available for… |
| Wheels | 531.3%ODI 10873656 · 3,000 miSINCE THE PURCHASE OF OUR 2016 MERCEDES IN DECEMBER OF 2015, WE HAVE BEEN EXPERIENCING THE WARNING DISPLAY OF THE TIRE PRESSURE ON NUMEROUS OCCASIONS. THE FIRST OCCURRENCE PRIOR TO TAKING IT TO A DEALERSHIP MY WIFE TOOK IT A LOCAL TIRE SHOP WHERE THE OWNER PUT AIR IN THE TIRES AND THE LIGHT WENT OFF. IT OCCURRED SEVERAL MORE TIMES AND I ALWAYS WENT TO LOCAL GAS STATIONS AND PUT AIR IN. AFTER GETTING FRUSTRATED WE DROVE TO THE DEALERSHIP IN VALENCIA CALIFORNIA SHOWED THE SERVICE ATTENDANT THE ALERT ON THE DASH. HE RETRIEVED AN AIR PUMP AND P… | 133.3%ODI 10980130 · 9 mi5 MONTHS AFTER RECIEVEING THE CAR I WAS ON THE HIGHWAY AND MY FRONT PASSANGER SIDE TIRE AIR PRESUURE INDICATOR WENT OFF. I PULLED OFF THE HIGHWAY AND PUT A "FIX A FLAT" IN THE TIRE THINKING I RAN OVER A NAIL. THE TIRE WENT LOW AGAIN SO I DROVE TO THE LOCAL MERCEDES BENZ DEALERSHIP WHERE THEY MOUNTED THE CAR AND SHOWED ME THE "FIX A FLAT" GEL COMING OUT OF THE SIDE OF THE UNDAMAGED TIRE INDICATING A CRACKED WHEEL. THEY REMOVED THE TIRE AND INFACT I HAD A CRACKED WHEEL. 4 MONTHS LATER MY FRONT DRIVERS SIDE AIR PRESSURE INDICATOR WENT OFF WHERE … |
| Electrical System | 425.0%ODI 11164987 · 25,070 miWHILE 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 | 00.0%No examples available for this selection. |
| Structure:Body | 425.0%ODI 11317270 · 51,000 miAS PER THIS RECALL LISTED 2016 MERCEDES-BENZ C300, C450 AMG 4MATIC RECALLED FOR PANORAMIC SUNROOF DEFECT. I BOUGHT THIS CAR AS A CERTIFIED USED MODEL FROM A MERCEDES DEALERSHIP AND WHILE DRIVING THE PANORAMIC SUNROOF ATTEMPTED TO STAND UP VERTICALLY BUT I QUICKLY CAUGHT IT. I PULLED OVER AND MANAGED TO GET IT TO CLOSE AND LATCH AND TOOK IT TO THE DEALER NAMED IN THE REPAIR ESTIMATE. I PROVIDED THEM WITH THE PLASTIC PIECES SHOWN IN THE PICTURE THAT I FOUND BROKEN INSIDE THE FRAME AND THEY WOULD NOT REMEDY THE DEFECT WITHOUT A CHARGE OF OVER $32… | 00.0%No examples available for this selection. |
| Steering | 212.5%ODI 11164987 · 25,070 miWHILE 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 | 00.0%No examples available for this selection. |
| Power Train | 16.3%ODI 11736177Sudden 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. | 00.0%No examples available for this selection. |
| Visibility:Sun/Moon Roof Assembly | 16.3%ODI 11653994Just purchased this vehicle in Utah, was driving from Utah to Idaho on the interstate at 80mph when all of a sudden my sunroof opened up with high winds and blew right off. Luckily nobody was behind me but I’ve been driving 2 hours without a sunroof due to weak glue/manufacturing defect | 00.0%No examples available for this selection. |
| Visibility/Wiper | 00.0%No examples available for this selection. | 133.3%ODI 11554961- windshield, and I had Satellite repair it through an insurance claim because it was urgent for my safety. - the windshield and its adhesive never bonded together making the windshield structurally unsafe and if I would have gotten into an accident then my vehicles airbags would have not deployed properly. - The issue was brought to my attention from a Satellite repair representative. - yes Safelite who contacted my insurance. - I went through a car wash and found water making its way into my car interior, which I then inspected and foun… |
Darker cells indicate a larger share of submitted complaints. Components overlap. This measures complaint composition, not failure probability.
Failure mileage by component
Median and middle 50% of usable owner-reported mileages. Ranges require at least five records.
| Component | Mileage range (25th–75th percentile) | Median | Usable records | Examples |
|---|---|---|---|---|
| Wheels | Too few reports for a range | 9 mi | 1 (sparse) | ODI 10980130 · 9 mi5 MONTHS AFTER RECIEVEING THE CAR I WAS ON THE HIGHWAY AND MY FRONT PASSANGER SIDE TIRE AIR PRESUURE INDICATOR WENT OFF. I PULLED OFF THE HIGHWAY AND PUT A "FIX A FLAT" IN THE TIRE THINKING I RAN OVER A NAIL. THE TIRE WENT LOW AGAIN SO I DROVE TO THE LOCAL MERCEDES BENZ DEALERSHIP WHERE THEY MOUNTED THE CAR AND SHOWED ME THE "FIX A FLAT" GEL COMING OUT OF THE SIDE OF THE UNDAMAGED TIRE INDICATING A CRACKED WHEEL. THEY REMOVED THE TIRE AND INFACT I HAD A CRACKED WHEEL. 4 MONTHS LATER MY FRONT DRIVERS SIDE AIR PRESSURE INDICATOR WENT OFF WHERE … |
Complaint and recall timeline
Explore monthly filing activity alongside recall announcements. Up to ten years of monthly history is available.
Solid line: filed complaints. Dashed amber lines: recall announcement dates for this vehicle selection; markers include all recall components. The latest month is partial. Temporal proximity does not establish causation.
Monthly counts, recall campaigns and complaint examples
| Month | Complaints | Campaigns announced | Examples |
|---|---|---|---|
| 2024-11 | 0 | None | No examples available for this selection. |
| 2024-12 | 0 | None | No examples available for this selection. |
| 2025-01 | 0 | None | No examples available for this selection. |
| 2025-02 | 0 | None | No examples available for this selection. |
| 2025-03 | 0 | None | No examples available for this selection. |
| 2025-04 | 0 | None | No examples available for this selection. |
| 2025-05 | 0 | None | No examples available for this selection. |
| 2025-06 | 0 | None | No examples available for this selection. |
| 2025-07 | 0 | None | No examples available for this selection. |
| 2025-08 | 0 | None | No examples available for this selection. |
| 2025-09 | 0 | None | No examples available for this selection. |
| 2025-10 | 0 | None | No examples available for this selection. |
| 2025-11 | 0 | None | No examples available for this selection. |
| 2025-12 | 0 | None | No examples available for this selection. |
| 2026-01 | 0 | None | No examples available for this selection. |
| 2026-02 | 0 | None | No examples available for this selection. |
| 2026-03 | 0 | None | No examples available for this selection. |
| 2026-04 | 0 | None | No examples available for this selection. |
| 2026-05 | 0 | None | No examples available for this selection. |
| 2026-06 | 0 | None | No examples available for this selection. |
| 2026-07 | 0 | None | No examples available for this selection. |
| 2026-08 | 0 | None | No examples available for this selection. |
| 2026-09 | 0 | None | No examples available for this selection. |
| 2026-10 (partial) | 0 | None | No examples available for this selection. |
Emerging complaint spikes
Complete months in the latest six months with at least 10 complaints, at least twice the preceding 12-month average, and at least three square-root deviations above that average.
This is a descriptive screening rule, not a statistical defect finding. Publicity and reporting changes can increase submissions.
No complete months meet the spike thresholds for this selection.
Equal-age model-year comparison
Model-wide cumulative reports during the first three or five calendar years, starting with the model year (age 0). Only fully elapsed windows are compared.
2016: 4 complaints · 2017: 0 complaints
| Model year | Through age 0 | Through age 1 | Through age 2 |
|---|---|---|---|
| 2016 | 1 | 1 | 4 |
| 2017 | 0 | 0 | 0 |
Date coverage across each selected cohort
| Year | Incident dates used | Filing date fallbacks | Excluded dates |
|---|---|---|---|
| 2016 | 16 | 0 | 0 |
| 2017 | 2 | 0 | 1 |
Incident date is preferred when valid and no later than filing; otherwise filing date is used. Model year approximates age. Equal observation time does not adjust for sales, distance driven or reporting delays. One complaint linked to multiple model years can appear in each cohort.
Components reported together
Each cell counts unique complaints naming both components. Open a nonzero cell for examples.
| Component | Unknown Or Other | Visibility/Wiper | Wheels |
|---|---|---|---|
| Unknown Or Other | — | 0 | 0 |
| Visibility/Wiper | 0 | — | 0 |
| Wheels | 0 | 0 | — |
Co-reporting does not establish that one component caused another concern.
Recurring narrative patterns
Specific keyword mentions beyond broad component labels. Matching includes negations and comparisons and does not confirm a diagnosis.
0 patterns with matching reports.
No narratives match the published patterns.