Free Preview
#BS-2021-MERC30-647D2021 Mercedes Benz C 300
Based on reports from 14 owners and 7 recalls for this exact model.
Preliminary Verdict
Green Light
Based on 14 complaints, 0 crashes, 0 fires, and 7 recalls.
Preview: What's in your full report
Each card shows a real sample from your report — unlock all 10 sections from $1.20
Mechanic Inspection Checklist
7 owners reported engine issues — failures commonly reported around 86K miles.
30,000-Mile Cost Projection
Best Case
Most Likely
Worst Case
Top cost driver: Engine (7 reports).
Also in your report
Owner Intelligence
AI-synthesized themes from real complaints
Buyer Lot Checklist
Questions, test drive checks, walk-away triggers
Negotiation Talking Points
Data-backed dollar deductions
Buy / Skip Verdict
Final recommendation with conditions
Where the complaints fall
2021 Mercedes Benz C 300: Known Issues & Problem Areas
Engine Issues
Engine complaints account for 50% of all reports filed for the 2021 Mercedes Benz C 300, with 7 owners filing complaints with NHTSA. The median mileage at time of complaint is 86,078 miles, suggesting issues tend to surface around the 86K-mile mark.
Fuel System Issues
Fuel System complaints account for 14% of all reports filed for the 2021 Mercedes Benz C 300, with 2 owners filing complaints with NHTSA. Owners should pay attention to fuel system-related symptoms during test drives and pre-purchase inspections.
Back Over Prevention: Sensing System: Camera Issues
Back Over Prevention: Sensing System: Camera complaints account for 7% of all reports filed for the 2021 Mercedes Benz C 300, with 1 owners filing complaints with NHTSA. Owners should pay attention to back over prevention: sensing system: camera-related symptoms during test drives and pre-purchase inspections.
Airbags Issues
Airbags complaints account for 7% of all reports filed for the 2021 Mercedes Benz C 300, with 1 owners filing complaints with NHTSA. Owners should pay attention to airbags-related symptoms during test drives and pre-purchase inspections.
Data sourced from NHTSA owner complaints and community reports. The full report analyzes severity, repair costs, and failure patterns for each category.
Complaint trend by year
Complaints filed with NHTSA by year for the 2021 Mercedes Benz C 300. Recent trend: decreasing.
Don't negotiate blind — know what this car costs to own
Repair costs • Negotiation scripts • Mechanic checklist • Buy/skip verdict
Recall History (7 recalls)
SEAT BELTS:FRONT:RETRACTOR
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2017-2021 C300, 2017-2020 AMG C43, and AMG C63 vehicles. The front seat belts might not fully retract to their stowed position. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 208, "Occupant Crash Protection."
COMMUNICATION: AUTO CRASH NOTIFICATION
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2016 - 2021 CLA-Class, GLA-Class, GLE-Class, GLS-Class, SLC-Class, A-Class, GT-Class, C-Class, E-Class, S-Class, CLS-Class, SL-Class, B-Class, GLB-Class, GLC-Class, and G-Class vehicles. Please refer to the Part 573 report for specific vehicle model details. The software design of the communication module may fail to communicate the correct vehicle location for the emergency call system (eCall) in the event of a crash.
SEAT BELTS:PRETENSIONER
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2021 C-Class, E-Class, E-Class Coupe and Convertible, GLC, CLS, AMG GT 4-door Coupe and G-Class vehicles. Please refer to MBUSA's recall report for specific vehicle model details. A faulty electrical contact within the seat position switch may prevent the driver and passenger air bags and seat belt force limiters from properly activating during a crash.
SEATS:MID/REAR ASSEMBLY:HEAD RESTRAINT
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2021 C300 Cabriolet, C43 AMG Cabriolet, C63 AMG Cabriolet, C63 AMG S Cabriolet, E450 Cabriolet, and E53 AMG Cabriolet vehicles. The rear headrests may be incorrectly mounted to the seatbacks.
BACK OVER PREVENTION:DISPLAY FUNCTION
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2018-2021 CLA-Class, GLE/GLS-Class, A-Class, C-Class, E-Class, E-Class Coupe/Convertible, GLA/GLB-Class, GLC-Class, and CLS-Class vehicles. Please refer to MBUSA's recall report for specific vehicle model details. The rearview camera may not display the rearview image due to a software error. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 111, "Rear Visibility."
+ 2 more recalls in the full report
Recall severity analysis & seller scripts
The full report rates each recall's severity and gives you scripts for asking the seller about recall completion.
About this data
NHTSA Complaints
Federal database of owner-filed safety complaints. 14 records for this vehicle.
NHTSA Recalls
Manufacturer-issued safety recalls. 7 recalls found for this vehicle.
Repair Cost Data
Real-world repair costs from owner reports and independent databases.
Other Mercedes Benz C 300 Model Years
View all Mercedes Benz C 300 years →2021 Mercedes Benz C 300: Frequently Asked Questions
What is the most common problem with the 2021 Mercedes Benz C 300?
Is the 2021 Mercedes Benz C 300 reliable?
How much does it cost to fix 2021 Mercedes Benz C 300 problems?
Does the 2021 Mercedes Benz C 300 have any recalls?
What mileage do Mercedes Benz C 300 problems start?
What’s in the full report?
How is this different from free NHTSA data?
How is this different from Carfax?
What if the report isn’t useful?
Get the Full 2021 Mercedes Benz C 300 Report
10 sections of AI analysis based on 14 owner reports. Know before you buy.