repaired · 2025 Q4
Body: roof and pillars
Risk. A detached roof panel can become a road hazard, increasing the risk of a crash.
2015 Mercedes-Benz C300Problems, recalls & complaints
NHTSA has logged 386 owner complaints about the 2015 Mercedes-Benz C300, most often about the engine. It is covered by 11 safety recalls, and for recall 23V-854 the manufacturer reports only 41% of affected cars repaired.
Source: NHTSA complaints, recalls, investigations and manufacturer recall reports, through November 12, 2026. Updated daily. Photo: SsmIntrigue, CC BY-SA 4.0.
Complaints by system
Where the 2015 Mercedes-Benz C300 has problems
386 complaints grouped by the system owners reported.
127Engine1 crash/fire/injury
67Fuel/propulsion system1 crash/fire/injury
61Structure1 crash/fire/injury
50Electrical system4 crash/fire/injury
24Suspension
23Steering
21Power train
12Air bags
10Visibility
6114 other systems3 crash/fire/injury
| System | Complaints | Crash, fire or injury |
|---|---|---|
| Engine | 127 | 1 |
| Fuel/propulsion system | 67 | 1 |
| Structure | 61 | 1 |
| Electrical system | 50 | 4 |
| Suspension | 24 | 0 |
| Steering | 23 | 2 |
| Power train | 21 | 0 |
| Air bags | 12 | 4 |
| Visibility | 10 | 0 |
| 14 other systems | 61 | 3 |
Source: NHTSA Office of Defects Investigation. Complaints are submitted by the public and are not verified by NHTSA.
11 recalls
2015 Mercedes-Benz C300 recalls and how many were fixed
Each ring shows the share of affected cars repaired, from the manufacturer’s latest quarterly report to NHTSA. Recall repairs are free at authorized dealers.
repaired · 2023 Q3
Body: roof and pillars
Risk. The adhesive bonding of the front panel might deteriorate, possibly causing the front panel to detach from the vehicle and become a road hazard, increasing the…
repaired · 2021 Q1
Communication
Risk. An inaccurate vehicle location may delay emergency responders, increasing the risk of injury.
repaired · 2022 Q2
Rack and pinion: rack
Risk. A car that cannot be properly steered has an increased risk of a crash.
Show 7 more recalls
repaired · 2019 Q4
Air bags: frontal
Risk. If the driver air bag inadvertently deploys, it can increase the risk of injury and a crash.
repaired · 2018 Q3
Frontal: sensor/control module-inactive
Risk. If the air bags do not deploy as intended in the event of a crash, there would be an increased risk of injury in the event of a crash.
repaired · 2018 Q4
Electrical system: starter assembly
Risk. If the starting current limiter overheats, the surrounding components can melt, increasing the risk of a fire.
repaired · 2017 Q3
Steering: electric power assist system
Risk. If the vehicle experiences a loss of power steering assist, extra steering effort will be required, especially at lower speeds, increasing the risk of a…
repaired · 2016 Q3
Delivery: fuel pump
Risk. If the locking plate is not properly secured to the fuel delivery module it may become loose, and leak fuel, increasing the risk of a fire.
repaired · 2017 Q3
Exterior lighting: headlights
Risk. If the original horizontal adjustment is used to alter the low beam aim, the misaimed headlamp may not properly illuminated the road or cause increased glare…
repaired · 2016 Q1
Steering
Risk. If the sliding shaft becomes disengaged from the steering coupling socket, the driver may experience noises, steering backlash, and in a worst case, loss of…
Recalls apply to specific cars. To see whether a recall is still open on yours, enter the 17-character VIN at nhtsa.gov/recalls or with Mercedes-Benz.
Mileage at failure
When do engine problems start?
53kmiles, median
Based on the odometer reading in 35 engine complaints. 91% were reported before 100,000 miles.
Only 43% of complaints for this model year include a mileage.
10under 30k miles32under 100k miles3100k miles or more
Owner-reported costs
What owners say repairs cost
Dollar amounts owners wrote in their complaints when describing a repair or a quote. These are not price estimates; a system is shown only when at least 8 owners mentioned a cost.
Engine
11 owners mentioned a cost$2,000median
Middle half: $1,100 – $2,650
If a problem is covered by a recall, the dealer fixes it for free. Some manufacturers also reimburse owners who paid for a repair before a recall was announced.
Best & worst years
2015 vs. every other C300 year
Bars show complaints per model year. Colors show the CarFlaw verdict: complaints weighted for crashes, fires and injuries, adjusted for years on the road and compared with the C300 median. How we score
'08'09'10'11'12'13'14'15'16'17'18'19'20'21'22'23'24'25'26
- Avoid
- Caution
- Solid
- Best
- Not rated
3 investigations
NHTSA defect investigations
Federal investigations that included the 2015 Mercedes-Benz C300, and the recalls they led to.
- C300 Wrist-pin allegationNo recall
- Desiccated Air Bag Inflator RuptureOpen
- Front Roof Panel DetachmentLed to recall 21V-197
In owners' words
What C300 owners report
Recent engine complaints filed with NHTSA, shortened. Personal details are removed.
The contact owns a 2015 Mercedes-Benz C300. The contact stated while driving 40 MPH, the vehicle unexpectedly veered to the left. There was no warning light illuminated. The contact stated that the steering wheel became inoperable, and the contact was unable to straighten the steering wheel. The…
Check Engine light came on recently, fault code P052E is identified by scanner. Car has 60,000 miles on original it. MB dealer wants to charge $300 for diagnostics, repair job (parts and labor) may cost over $2,000. Since this is critical emission compliance part/system, why is it not recalling?
The contact owns a 2015 Mercedes-Benz C300. The contact stated that approximately every 6-8 months, the vehicle sputtered while driving at various speeds or while idling. The contact stated that a month after the first failure had occurred, the front end of the vehicle lowered as if the shocks or…
Own a 2015 C300?
Decode your VIN to see the recalls for your exact car, then confirm open recalls with NHTSA.