2016 Mercedes-Benz C300 Fuel/propulsion System Problems

Source: NHTSA · Updated Oct 6, 2026 · 57 complaints analyzed

Owners have filed 57 complaints with NHTSA about fuel/propulsion system problems on the 2016 Mercedes-Benz C300, 20% of all complaints for this model year. Half of the reports with a mileage happened before 50,000 miles. The words owners use most often: “gas smell” (19% of reports).

What owners describe

Phrases that appear unusually often in these complaints compared with complaints about other cars.

  • Gas smell: mentioned in 11 of 57 complaints (19%)
  • Fuel leak: mentioned in 8 of 57 complaints (14%)
  • Smells like: mentioned in 6 of 57 complaints (11%)
  • Positive crankcase ventilation: mentioned in 5 of 57 complaints (9%)

At what mileage do fuel/propulsion system problems happen?

Based on 12 complaints that reported the odometer reading.

Under 10k miles0 · 0%
10k–25k miles1 · 8%
25k–50k miles4 · 33%
50k–75k miles4 · 33%
75k–100k miles3 · 25%
100k–150k miles0 · 0%
150k+ miles0 · 0%

How serious are the reports?

Of 57 complaints, 1 mention a crash.

Mercedes-Benz C300 fuel/propulsion system complaints by model year

Peak: 2015, with 66 complaints
2008: 2200822009: 442010: 262010262011: 38382012: 9201292013: 222014: 1201412015: 66662016: 572016572017: 30302018: 9201892019: 772020: 3202032021: 222022: 4202242023: 11

n = 261 complaints · Source: NHTSA

Model yearFuel/propulsion System complaintsShare of that yearMedian miles
2023 C30015%—
2022 C300416%—
2021 C300214%—
2020 C30039%87,000
2019 C300710%28,000
2018 C30099%62,000
2017 C3003014%47,000
2016 C3005720%50,000
2015 C3006617%49,000
2014 C30011%—
2013 C30021%—
2012 C30093%68,500
2011 C300388%80,000
2010 C300266%70,000
2009 C30041%60,500
2008 C30020%66,287

When owners reported it

Peak: 2023, with 16 complaints
2019: 3201932020: 7202072021: 5202152022: 102022102023: 162023162024: 5202452025: 8202582026: 320263

n = 57 complaints · Source: NHTSA

Related recalls (0)

No safety recall lists fuel/propulsion system for the 2016 Mercedes-Benz C300. A pattern of complaints does not always lead to a recall.

What owners report

Short excerpts of recent complaints, with personal details removed. Full reports are on NHTSA.gov.

I’ve been driving my car since September when it was purchased I just got it from dealership 4/9/26 spent over $1100 and have been working like regular full time schedule, I wake up today 4/27/26 trying to work and car is stalling. Not sure what’s going on with these mechanics and technicians…

Received Apr 27, 2026 · NHTSA complaint 11733961

Strong fuel smell in cabin Can maybe cause a fire

Received Feb 9, 2026 · NHTSA complaint 11716863

fuel lines/ clamps defective causing a fuel leak. vehicle could catch on fire and fumes are extremely strong inside the cabin. issue confirmed by Mercedes dealer, mentioned there is an extended warranty up to 120,000 miles. rejected mine because i was at 120,300 miles. had to pay out of pocket. no…

Received Jan 29, 2026 · NHTSA complaint 11714200

Frequently asked questions

Do all 2016 Mercedes-Benz C300s have fuel/propulsion system problems?

No. NHTSA has 57 owner complaints about fuel/propulsion system for the 2016 Mercedes-Benz C300 (20% of the 288 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 2016 Mercedes-Benz C300 fuel/propulsion system?

No recall currently lists fuel/propulsion system for this vehicle.

At what mileage do fuel/propulsion system problems start?

The median reported mileage is 50,000 miles: half of the reports with a mileage came before that.

What do owners say about fuel/propulsion system problems on the 2016 Mercedes-Benz C300?

The most frequent phrase is “gas smell”, in 11 of 57 complaints, followed by “fuel leak” (8).

Other 2016 Mercedes-Benz C300 problems

See all 2016 Mercedes-Benz C300 problems or fuel/propulsion system problems across all C300 years.