2018 Mercedes-benz C 300 reliability record
NHTSA consumer complaints and recall campaigns for the 2018 Mercedes-benz C 300 from the dataset labeled 2026. The source file does not provide an exact snapshot date. Use the reported issues to guide further checks; these counts do not establish failure rates or repair costs.
- NHTSA complaints
- 128
- Dataset year: 2026; snapshot day not provided
- Top problem area
- ENGINE
- 34 complaints
- Recalls on record
- 18
- see below
- Reported harm
- 9 reported crashes · 2 injuries
How this record compares
raw NHTSA counts, not defect ratesCounts are not adjusted for vehicles sold, time in service or reporting frequency. A larger count does not establish a higher chance of failure, and these comparisons do not set the maintenance budget in our calculator.
Complaint rank
#3,578
of 4,194 vehicle records
Vs Mercedes-benz median
-41
median 169 across 69 Mercedes-benz records
Vs 2016-2020
-159
median 288 complaints in 538 records
Top component share
27%
Engine: 34 complaints
What owners report fails — 2018 Mercedes-benz C 300
- ENGINE 34
- UNKNOWN OR OTHER 20
- STEERING 11
- ELECTRICAL SYSTEM 10
- FUEL/PROPULSION SYSTEM 9
18 recalls on record for the 2018 Mercedes-benz C 300
- NHTSA 23V854000 · 2024 · STRUCTURE:BODY:ROOF AND PILLARS A detached roof panel can become a road hazard, increasing the risk of a crash.
- NHTSA 21V509000 · 2022 · EXTERIOR LIGHTING:HEADLIGHTS Incorrectly adjusted headlights may reduce visibility, increasing the risk of a crash.
- NHTSA 22V365000 · 2022 · COMMUNICATION: AUTO CRASH NOTIFICATION A disabled eCall system would prevent a vehicle occupant from contacting the emergency services call center in an emerge
- NHTSA 21V197000 · 2021 · STRUCTURE:BODY:ROOF AND PILLARS The adhesive bonding of the front panel might deteriorate, possibly causing the front panel to detach from the vehicle a
- NHTSA 21V032000 · 2021 · SEAT BELTS:FRONT:RETRACTOR If the seat belt does not fully retract, the occupant may find the operation of the seat belt inconvenient and not wear
Estimate the 5-year cost to own a 2018 Mercedes-benz C 300
Build a separate budget with your purchase price, insurance quote, mileage and maintenance estimate. Complaint counts do not enter that calculation. Unknown local taxes and fees stay listed as costs to confirm.
Open TCO calculatorThese are unverified consumer reports and manufacturer recalls filed with the National Highway Traffic Safety Administration — not validated defect rates, and not adjusted for how many 2018 Mercedes-benz C 300 units were produced or sold. High-volume and older vehicles naturally accumulate more complaints. Use this as one research signal, not a verdict on any individual vehicle. Dataset year: 2026; exact snapshot day not supplied. Source: NHTSA Office of Defects Investigation (public domain).
Frequently asked questions
Is the 2018 Mercedes-benz C 300 reliable?
NHTSA has 128 consumer complaints on record for the 2018 Mercedes-benz C 300 and 18 recalls. The most-reported problem area is engine (34 reports). These are unverified consumer reports filed with the government, not validated failure rates, and are not adjusted for how many 2018 Mercedes-benz C 300 units were produced — popular vehicles naturally accumulate more reports.
What are the most common problems with the 2018 Mercedes-benz C 300?
Owners most often report problems with: engine (34), unknown or other (20), steering (11), electrical system (10). Each figure is the number of complaints filed with NHTSA for this exact model year.
How much does it cost to own a 2018 Mercedes-benz C 300?
This complaint dataset does not measure repair prices or predict a maintenance budget for the 2018 Mercedes-benz C 300. Use your purchase price, insurance quotes, fuel use and a maintenance estimate in the separate five-year cost calculator. It does not convert complaint counts into repair costs, and any unknown taxes remain excluded and clearly listed.