Home · 2020 Mercedes-benz C-class Cabriolet · Complaints

What 45 owners told NHTSA about the 2020 Mercedes-benz C-class Cabriolet

These are the actual owner complaints behind this car’s reliability verdict, filed with the federal government, unedited. They’re unverified reports, not confirmed defects: read them as leads for your pre-purchase inspection, not a diagnosis.

All (45)Crash / fire / injury (6)Engine (9)Transmission & drivetrain (7)Backup camera & sensors (4)Body & structure (4)Electrical system (4)Fuel system (4)Airbags (3)Driver assistance (3)Steering (3)Visibility & wipers (3)

3 of 45 complaints match · Steering · clear filters

Nov 5, 2025SteeringSuspension

Uneven wear pattern.The wear often occurs on inner shoulder of the tires 5k to9k miles,which can be dangerous tire can wear down to belts on inside edge while the outer tread still looks fine. i have brought this to dealership multiple time with NO FIX but to sale me new tires and alignments.I have spoke to multiple owners of 2020 mercedes c63 and they have the same problem. This is a safety issue and has left my wife and kids on the side of freeway broken down.

NHTSA ODI 11697729

Jun 16, 2025Steering

Over the past month, my 2020 Mercedes-Benz C300 has been experiencing unexpected and increasingly concerning issues with the steering. These problems began suddenly and without any prior warning signs. Initially, the steering has been making grinding sounds more usual, particularly at lower speeds and when making tight turns. Over the following weeks, the issue became more pronounced, with occasional instances of the steering wheel resisting movement or feeling delayed in its response. At times, it feels as if the power steering system is intermittently failing or underperforming. There have been no warning lights on the dashboard, and I have not been involved in any recent accidents or incidents that could have caused physical damage to the steering system. I have maintained the vehicle in accordance with the manufacturer's guidelines, including regular servicing. but there the person before me had been in a accident and it may have been the dealership i bought it off of failed to fix it

NHTSA ODI 11667088

Jul 1, 2021SteeringCrash2 injuries

While driving on the turnpike without warning my steering locked and I lost control of my car.

NHTSA ODI 11423100

Working with the data? Download all 45 complaints as CSV · fetched from NHTSA July 14, 2026

How to use these: a complaint is one owner’s report, filed voluntarily and published unverified. Patterns matter more than any single story. If several owners describe the same failure at similar mileage, put that system at the top of your pre-purchase inspection list. Back to the full 2020 Mercedes-benz C-class Cabriolet verdict →