2016 Mercedes-Benz C300 Fuel system Problems
- Complaints
- 67about this part
- Share
- 23%of 291 total for the year
- Median mileage
- 60,000miles
- Trend
- StableComplaints filed in the last 3 full calendar years are within 25% of the 3 years before.
NHTSA recorded 67 complaints about the fuel system of the 2016 Mercedes-Benz C300, 23% of the 291 complaints for this model year. Where a mileage was given, the median is 60,000 miles. 1 of these say a crash was involved, according to the filers. 1 recall campaign on record is filed under a similar system.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“2016 MB 300 C, AWD at 87000 miles started giving gas fuel smell when parked in our garage after driving. I took to a local Foreign Car Repair facility and they found a fuel leak at the fuel injector pump. The mechanic changed the Fuel Injector Pump (Bosch) at a total cost of $745.31. Since the change in the pump, the smell has stopped and I feel safe. Who is responsible to reimburse this cost to me?”
NHTSA complaint #11444351, filed 2021-12, 87,000 miles“2016 MERCEDES BENZ C300. When I start the car , you smell gas inside and outside of the car. Also the fumes come the vent when the heat is turned on. I have approximately 69,700 miles on my car”
NHTSA complaint #11498933, filed 2022-12, 69,700 miles“There is a raw fuel smell inside the cabin of the car when driving. I looked online and found that there is a lawsuit against Mercedes-Benz for faulty fuel lines that they are refusing to repair. I am having the same issues with the fuel lines as countless other people have where the rubber hoses are failing prematurely. I have a 2016 C300 with only 37,100 miles on it that is kept up on and the dealership is saying that the fuel lines are typical wear items and that the cpo warranty does not cover the repair. …”
NHTSA complaint #11406553, filed 2021-04, 37,000 miles“A strong fuel odor coming from the car, we tried to get the dealer to repair it under warranty and they said, over fueling was causing it, however with the tank half full it does still smell a lot like gas, a strong odor you can smell it outside, they don't want to take responsibility on it, after warranty expired they came up saying something is wrong with my fuel system that needs to be repaired but its not covered by warranty, there are a lot of complaints but they want people to pay for this, we are afraid this could start a fire while driving, or even worse burn my house down”
NHTSA complaint #11413327, filed 2021-04, 42,000 miles“In february 2019 the C300 engine light came on, took the vehicle to the dealer and they said it was a bad catalytic convertor, and the dealer took three days to repair it. Three weeks later in march 2019, while driving 25 miles per hour straight on a residential street the car shut off without a sound, all the lights on the instrument cluster lit up, and the car coasted to a stop on the side of the road. I trie to restart the car, the starter made noise but the engine would not turn over. I called roadside assistance and did the three time lock and unlock routine, and the car would not start. …”
NHTSA complaint #11185421, filed 2019-03, 50,100 milesRelated recalls
- 21V961000Dec 13, 2021Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2019 AMG G63, C300, E300, G550, AMG GT63, AMG GT53, 2019-2020 A220, GLA250, GLC300, 2016 C300, 2020 AMG…Covers: Mercedes-Benz C300 2016, 2019, A 220 2019–2020, GLC 300 2019–2020 +18 more
Related service bulletins
- 11014402Feb 21, 2025Complaint Customer-perceived problem: • Fuel gauge reading implausible • MIL ON (market-dependent) N118/3 Fault codes in control units FSCM_GEN4/5/6 • For these fault codes, the…
- 11013179Jan 24, 2025Complaint Customer-perceived problem: • Fuel gauge reading implausible • MIL ON (market-dependent) N118/3 Fault codes in control units FSCM_GEN4/5/6 • For these fault codes, the…
- 11031586Aug 20, 2021This NCU replaces the prior NCU issued on July 30, 2021 and includes an additional population (33) of certain MY 2018 Baumusters covered under this extended warranty.
- 10205814Aug 11, 2021Fuel filler flap opens slowly/switch flashes/tank is bleeding instrument cluster warning
- 10144074Mar 2, 2018Update fuel system control unit (FSCU) software
Fuel system: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2023 | 1 | 5% |
| 2022 | 7 | 28% |
| 2021 | 3 | 21% |
| 2020 | 3 | 9% |
| 2019 | 12 | 17% |
| 2018 | 10 | 10% |
| 2017 | 33 | 15% |
| 2016 | 67 | 23% |
| 2015 | 70 | 18% |
| 2014 | 1 | 1% |
| 2013 | 3 | 1% |
| 2012 | 12 | 4% |
| 2011 | 44 | 9% |
| 2010 | 26 | 6% |
| 2009 | 5 | 1% |
| 2008 | 2 | 0% |
Other parts of the 2016 Mercedes-Benz C300
94 complaintsOther or unknown
65 complaintsElectrical system
32 complaintsBody and structure
28 complaintsVisibility (wipers, defrost, mirrors)
21 complaintsTransmission and drivetrain
18 complaintsSteering
13 complaintsBrakes
9 complaintsAir bags
6 complaintsExterior lighting
4 complaintsForward collision avoidance
3 complaintsSeats
3 complaints
← All problems reported for the 2016 Mercedes-Benz C300
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Nov 1, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology