Home › Cars › Mercedes-Benz › C-Class › 2018
2018 Mercedes-Benz C-Class problems: engine and transmission complaints and recalls
38% of relevant owner complaints on the 2018 Mercedes-Benz C-Class are about the engine, transmission or fuel system. That is elevated. Worth an independent inspection before you commit to one.
Better than 57% of the 1,790 model years we track (2010–2023).
Excludes 10 airbag, lighting and seat-belt recall complaints that would otherwise mask the signal (unadjusted: 35%).
Does the 2018 Mercedes-Benz C-Class have engine problems?
More than most. The pattern is elevated rather than severe. 45 of 120 relevant complaints filed with NHTSA about the 2018 Mercedes-Benz C-Class concern the engine, transmission or fuel system (38%), and the largest group is filed under engine (39). For comparison, the 2017 scores 53% and the 2019 scores 39%. On a test drive, check for stalling, loss of power, rough idle, oil consumption or a check-engine light. This describes the model year, not any one car: a well-maintained or already-repaired example can be fine, and a clean model year can still have a bad car in it.
Complaints by component
The years either side
Manufacturers fix things mid-generation. A bad year next to a clean one is common; the fix usually arrived in between.
How the 2018 compares with other Mercedes-Benz C-Class years
Of the 13 Mercedes-Benz C-Class years with enough complaints to score, the 2018 is the 5th-worst on engine and transmission share (38%). The worst is the 2017 (53%), the best the 2023 (15%). By volume, the 2018 drew 130 complaints (45 drivetrain), against 253 for the 2017 and 79 for the 2019.
Mercedes-Benz C-Class years to avoid and best years →
2010 C-Class problems · 2011 C-Class problems · 2012 C-Class problems · 2013 C-Class problems · 2014 C-Class problems · 2015 C-Class problems · 2016 C-Class problems · 2017 C-Class problems · 2018 · 2019 C-Class problems · 2020 C-Class problems · 2022 C-Class problems · 2023 C-Class problems
The rest of the picture on the 2018 Mercedes-Benz C-Class
- The mileage where it happens. When owners of the 2018 Mercedes-Benz C-Class said the problem showed up, and the range most of them fell in.
- What the repair costs. Typical engine repair ranges, to price into your offer.
- Cleaner alternatives. Similar cars and nearby years with a better record.
- Up to 15 owner reports, with the ones about your car's own engine first.
- What to ask the seller and what to check on the test drive, for this car.
- Two cars side by side, if you are deciding between them.
What one owner reported
One of 45 drivetrain complaints. The full report shows up to 15, with quotes about the engine in the car you are looking at first.
Checking one particular 2018 Mercedes-Benz C-Class? This page is about the model year. Accidents, title brands and odometer records belong to the individual car, and that is what a vehicle history report covers.
Get a history report from EpicVIN Before you pay: EpicVIN’s $1 offer is a 3-day trial (up to 5 reports) that renews at $49.99 a month unless you cancel. Other plans are listed under “View all our packages” at checkout. We may earn a commission if you buy through this link. It does not change what this page reports.Questions people ask about the 2018 Mercedes-Benz C-Class
Does the 2018 Mercedes-Benz C-Class have engine problems?
More than most; the pattern is elevated rather than severe. 45 of 120 relevant complaints filed with NHTSA about the 2018 Mercedes-Benz C-Class concern the engine, transmission or fuel system (38%). Before buying one, have an independent mechanic check the engine and ask the seller whether it has been repaired or replaced.
What is the most common problem with the 2018 Mercedes-Benz C-Class?
Going by NHTSA owner complaints, the most common problem filed against the 2018 Mercedes-Benz C-Class is engine: 39 of 130 complaints (30%) name it, followed by structure (19) and steering (13). A complaint can name more than one component, so these overlap.
Is the 2018 Mercedes-Benz C-Class reliable?
On the engine and transmission, owner complaints point to a weak spot: 38% of relevant complaints filed with NHTSA concern the drivetrain (elevated signal). That is better than 57% of the 1,790 model years we track. Among the 13 Mercedes-Benz C-Class years we score, it ranks 5th-worst. Complaint data describes the model year, not one car, and it says nothing about trim, paint or electronics outside the drivetrain; an independent inspection still decides it.
Are there engine or transmission recalls on the 2018 Mercedes-Benz C-Class?
NHTSA lists no recall campaigns on the 2018 Mercedes-Benz C-Class.
Which Mercedes-Benz C-Class years are better?
Among the Mercedes-Benz C-Class years we track, the 2023 (15%), the 2022 (25%) and the 2010 (26%) have a lower engine and transmission complaint share than the 2018 (38%). Manufacturers fix things mid-generation, so the year before or after can be a different car. Every year side by side: https://thelanecheck.com/cars/mercedes-benz-c-class
Have the VIN?Paste it and get the full report for that car. First report free, then a 30-day pass covers a whole car search.
Check a VINExperimental model-level information. This is not a vehicle inspection, vehicle-history report, financial advice or purchase recommendation. It describes patterns across a model year, not the condition of any individual vehicle.