2015 Mercedes-Benz C300 Electrical System Problems
Owners have filed 50 complaints with NHTSA about electrical system problems on the 2015 Mercedes-Benz C300, 13% of all complaints for this model year. Half of the reports with a mileage happened before 20,010 miles. The words owners use most often: “collision prevention” (12% of reports).
- 50electrical system complaints
- 20,010median miles at failure
- 3mention a crash
- 2mention an injury
- 2related recalls
- 38%of reports with a speed happened at 50+ mph
What owners describe
Phrases that appear unusually often in these complaints compared with complaints about other cars.
- Collision prevention: mentioned in 6 of 50 complaints (12%)
- Electrical engine engine: mentioned in 5 of 50 complaints (10%)
At what mileage do electrical system problems happen?
Based on 28 complaints that reported the odometer reading.
How serious are the reports?
Of 50 complaints, 3 mention a crash, 2 an injury.
Mercedes-Benz C300 electrical system complaints by model year
| Model year | Electrical System complaints | Share of that year | Median miles |
|---|---|---|---|
| 2025 C300 | 1 | 25% | — |
| 2024 C300 | 4 | 36% | — |
| 2023 C300 | 5 | 23% | 6,000 |
| 2022 C300 | 7 | 28% | 5,500 |
| 2021 C300 | 1 | 7% | — |
| 2020 C300 | 3 | 9% | 6,000 |
| 2019 C300 | 13 | 19% | 31,002 |
| 2018 C300 | 10 | 10% | 52,800 |
| 2017 C300 | 31 | 14% | 44,771 |
| 2016 C300 | 32 | 11% | 10,500 |
| 2015 C300 | 50 | 13% | 20,010 |
| 2014 C300 | 9 | 10% | 56,291 |
| 2013 C300 | 19 | 7% | 68,675 |
| 2012 C300 | 12 | 5% | 83,500 |
| 2011 C300 | 43 | 9% | 75,000 |
| 2010 C300 | 84 | 19% | 69,000 |
| 2009 C300 | 198 | 34% | 70,400 |
| 2008 C300 | 228 | 34% | 79,000 |
When owners reported it
Related recalls (2)
Electrical system:software; air bags:frontal:sensor/control module-inactive
Problem: Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2016 AMG GT-S, GLC300, CLA250 and GLE300d 4Matic vehicles, 2013 C250, E350 BlueTec and G63 AMG vehicles, 2008-2014 C300 vehicles, 2013-2014 C300 4Matic and ML350 4Matic vehicles, 2009 C350 vehicles, 2014 CLS550, E350 4Matic, E350 Coupe 4Matic, E350 Wagon 4Matic, GLK350 and SL550 vehicles, 2012 CLS550 4Matic vehicles, 2012-2016 E350 vehicles, 2016-2017 GL450 4Matic vehicles, 2012-2014 ML350 4Matic BlueTec vehicles, 2015 S550, S550 4Matic and C300 4Matic Sedan vehicles, 2015-2016 C300 Sedan vehicles, and 2017 SL63 AMG vehicles. Various control units on these vehicles may have been updated with incorrect software, potentially affecting the correct deployment of the air bags in the event of a crash.
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.
Fix: MBUSA will notify owners, and dealers will update software in the affected control units, free of charge. The recall began April 21, 2017. Owners may contact MBUSA customer service at 1-800-367-6372.
Electrical system:starter assembly; engine and engine cooling:engine
Problem: Mercedes-Benz USA, LLC. (MBUSA) is recalling certain 2015-2017 C300 4Matic, C300, CLA250, CLA250 4Matic and CLA45 AMG vehicles, 2017 C300 4Matic Cabrio, C300 4Matic Coupe, C300 Cabrio, C300 Coupe, E300, E300 4Matic, E400 4Matic Wagon, E43 AMG 4Matic, GLA250, GLA250 4Matic and GLC300 4Matic Coupe vehicles and 2016 C350e and GLC300 vehicles and 2016-2017 C450 4Matic AMG Sport and GLC300 4Matic vehicles. In the event that the engine or transmission cannot turn over, the starting current limiter may overheat from the repeated attempts of the starter motor attempting to start the vehicle.
Risk: If the starting current limiter overheats, the surrounding components can melt, increasing the risk of a fire.
Fix: MBUSA will notify owners, and dealers will install an additional fuse in the electrical line to the starter, free of charge. The recall began August 31, 2017. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2017080002.
What owners report
Short excerpts of recent complaints, with personal details removed. Full reports are on NHTSA.gov.
I was driving my car was sputtering or trying to shut off while I press the gas and I let go of the gas and it catches and stayed on. I took it to the dealership and they said they found nothing wrong. May 3rd around 12pm im driving on the freeway and as im getting on the express lane going 60 it…
Power steering malfunction Car unable to drive I believe there is supposed to be a recall for this issue but not popping up when I put in VIN number Warning lamps come up. Sometimes every light on dashboard. Took it to Mercedes but it was when code was not popping up and they said I needed a new…
Have noticed a lot of air noise coming from the panoramic sunroof of my vehicle when driving, and now have issues of it opening or closing properly. I researched and found a recall regarding the issues my vehicle is having, and brought it into a dealership for diagnosis. Was told my vehicle VIN was…
Frequently asked questions
Do all 2015 Mercedes-Benz C300s have electrical system problems?
No. NHTSA has 50 owner complaints about electrical system for the 2015 Mercedes-Benz C300 (13% of the 381 complaints for this model year). Complaint data shows that the problem is reported, not how many of all cars sold are affected.
Was there a recall on the 2015 Mercedes-Benz C300 electrical system?
Yes: 2 safety recalls list electrical system. Check your VIN on NHTSA.gov to see whether the fix was done on your car.
At what mileage do electrical system problems start?
The median reported mileage is 20,010 miles: half of the reports with a mileage came before that.
What do owners say about electrical system problems on the 2015 Mercedes-Benz C300?
The most frequent phrase is “collision prevention”, in 6 of 50 complaints, followed by “electrical engine engine” (5).
Other 2015 Mercedes-Benz C300 problems
- Engine problems (127)
- Fuel/propulsion System problems (66)
- Structure problems (60)
See all 2015 Mercedes-Benz C300 problems or electrical system problems across all C300 years.