2018 Mercedes-Benz C-Class problems and recalls

Owners filed 65 complaints on the 2018 Mercedes-Benz C-Class in the last three full years, out of 129 on record. The most cited component is the Engine.

129
Complaints
0
Recalls
5
Crash reports
0
Fire reports
2
Injuries
42.3
Severity index

Severity index 42.3 Low. The index weights crashes, fires, injuries and fatalities per 100 complaints. How it is calculated.

Middle half of all tracked vehiclesThis vehicle: 42.3p25 46p75 80cleanestworst
Severity index against the quartile range for all tracked vehicles.

Ranked 90 of 122 by severity index among 2018 vehicles with at least 40 complaints, highest first. 26% of those vehicles scored lower. Full 2018 ranking.

Components cited in complaints

EngineEngine: 39 complaints (30.2%)39 30%Unknown Or OtherUnknown Or Other: 27 complaints (20.9%)27 21%StructureStructure: 18 complaints (14.0%)18 14%SteeringSteering: 13 complaints (10.1%)13 10%Electrical SystemElectrical System: 12 complaints (9.3%)12 9%Fuel/Propulsion SystemFuel/Propulsion System: 9 complaints (7.0%)9 7%Power TrainPower Train: 6 complaints (4.7%)6 5%TiresTires: 5 complaints (3.9%)5 4%
A single complaint can cite more than one component, so shares total over 100%.
ComponentComplaintsShare of complaints citing it
ENGINE3930.2%
UNKNOWN OR OTHER2720.9%
STRUCTURE1814.0%
STEERING1310.1%
ELECTRICAL SYSTEM129.3%
FUEL/PROPULSION SYSTEM97.0%
POWER TRAIN64.7%
TIRES53.9%

Complaints filed per year

014282018: 72019: 212020: 12021: 92022: 162023: 282024: 252025: 122026: 10 (partial year)18192021222328242526
Complaints by the calendar year they were filed. The hatched bar is the current year to date.
YearComplaints
20187
201921
20201
20219
202216
202328
202425
202512
2026 (year to date)10
Filings in 2023 to 2025 ran 2.5x those in 2020 to 2022 (65 against 26).

Other Mercedes-Benz C-Class model years

Severity index for every other model year on file. Compare all 13 years side by side.

Source. NHTSA public complaint and recall APIs (api.nhtsa.gov), retrieved 2026-09-03. Complaints are unverified consumer reports. Totals vary with units sold and years on the road. Not affiliated with NHTSA or any manufacturer.