2017 Mercedes-Benz C300 Fuel System Problems
NHTSA lists 33 Fuel System complaints for the 2017 Mercedes-Benz C300, 15% of the model year's 216 total complaints, with a median failure mileage of 55,000 miles. No related recall is listed for this issue. One fire was reported among these complaints.
- Fuel System complaints
- 33
- 15% of 216
- Crashes reported
- 0
- Fires reported
- 1
- Injuries reported
- 0
- Median mileage
- 55,000 mi
- Related recalls
- 0
Typical fuel system symptoms owners report
- Owners report a fuel odor entering the cabin when the heater or HVAC is running, especially in cold weather.
- Some describe a persistent gas smell coming from the engine bay when the car is idling or parked, without any warning light.
- Several complaints point to a low-pressure fuel hose connection near the high-pressure fuel pump that weeps or leaks fuel, sometimes pooling on the skid plate.
- One owner reported flames coming from the engine compartment while driving at low speed, with smoke visible before the fire.
- A separate cluster of complaints describes a crankcase vent valve (PCV) fault code triggering the check engine light, unrelated to the fuel-smell complaints but filed under Engine/Fuel System.
When 2017 Mercedes-Benz C300 fuel system complaints were filed
First complaint Nov 12, 2019, latest May 15, 2026.
Fuel System recalls for the 2017 Mercedes-Benz C300
No safety recalls on record for this model year.
Fuel System complaints by C300 model year
Raw complaint counts per model year; newer years have had less time to accumulate complaints.
Frequently asked questions
- How many fuel system complaints does the 2017 Mercedes-Benz C300 have?
- NHTSA lists 33 Fuel System complaints for the 2017 C300, which is 15% of the 216 total complaints filed for that model year.
- Is there a recall for the 2017 C300 fuel system issue?
- No related recall is listed in NHTSA data for this fuel system complaint area.
- At what mileage do fuel system problems typically show up on the 2017 C300?
- The median mileage at failure across these complaints is 55,000 miles.
- Did the fuel system problems cause any fires or crashes?
- NHTSA data shows 1 fire and 0 crashes among the 33 fuel system complaints for the 2017 C300.
- How does the 2017 C300 compare to other years for fuel system complaints?
- The 2017 C300's 33 complaints and 15% share are lower than the 2015 (70 complaints, 18%) and 2016 (66 complaints, 23%) model years, but higher than most years after 2018.