2015 Mercedes-Benz C300 Fuel/propulsion System Problems
NHTSA component category: FUEL/PROPULSION SYSTEM · data through 07/14/2026
Source: U.S. NHTSA complaint data. Complaints are unverified reports from vehicle owners — a complaint is not a confirmed defect.
How fuel/propulsion system ranks on this vehicle
Share of the 376 complaints citing each category; one complaint can cite several. Full breakdown on the 2015 Mercedes-Benz C300 overview page.
What owners report
“2015 MERCEDES BENZ C300 WITH 65 K MILES. THE SECONDARY HIGH PRESSURE FUEL PUMP (274070050180) LEAKED GAS SERIOUSLY. IT WAS THE UNIT ITSELF NOT THE…”NHTSA complaint 11297698 — filed 01/07/2020
“FUEL SYSTEM, GASOLINE. THERE IS A FUEL SMELL COMING INSIDE OF THE CAR THROUGH THE FRONT FILTERS. WE HAVE CHANGED FUEL INJECTOR RING HOWEVER THE…”NHTSA complaint 11291179 — filed 12/25/2019
“GASOLINE FUEL HOSE LEAK BETWEEN THE ENGINE AND THE DRIVER SIDE CAUSING A STRONG GASOLINE SMELL INSIDE THE CABIN AND UNDER THE HOOD WHEN THE…”NHTSA complaint 11290689 — filed 12/22/2019
Excerpts are shortened and scrubbed of personal details; they are individual, unverified reports.
Fuel/propulsion System complaints by year filed
Frequently asked questions
Does the 2015 Mercedes-Benz C300 have fuel/propulsion system problems?
Fuel/propulsion System is the #2 most-reported problem area on the 2015 Mercedes-Benz C300: 66 of 376 complaints on file (17.6%). Complaints are unverified owner reports, not confirmed defects.
How many complaints does the 2015 Mercedes-Benz C300 have in total?
376 complaints were on file with NHTSA as of 07/14/2026. Across all categories, 9 involved a crash, 1 involved a fire, 7 reported injuries, and none reported deaths.
What does NHTSA's fuel/propulsion system category include?
NHTSA assigns each complaint to standard component categories; this page reports the FUEL/PROPULSION SYSTEM category exactly as NHTSA defines and records it.
