YearToAvoid

2021 Mercedes-Benz AMG C43 Problems, Recalls & Reliability

Verdict

No verdict

Complaint Index

13/100

#8 most-complained of 9 AMG C43 years

The 2021 Mercedes-Benz AMG C43 has a complaint index of 13, ranking 8th of 9 model years, with only 1 complaint filed and 6 recalls. It ranks well among AMG C43 years based on NHTSA data.

Complaints
1
Recalls
6
Crashes / fires
0 / 0
Injuries / deaths
0 / 0
NHTSA overall rating
Not rated
EPA combined MPG
22
19 city / 27 hwy

Top 2021 Mercedes-Benz AMG C43 problems

NHTSA owner complaints by component group. Groups with 15+ complaints have their own page.

  1. Suspension, Wheels & Tires1 (100%)

What owners report

  • Owners report the TPMS warning light illuminating on the front and rear tires while driving around 70 MPH.
  • One reported case involved inspecting Continental front tires and Pirelli rear tires after the alert.

2021 Mercedes-Benz AMG C43 recalls

6 NHTSA recall campaigns list this model year.

  1. NHTSA 23V445000Jun 26, 2023Fuel System143,551 vehicles

    Fuel system, gasoline:delivery:fuel pump

    Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2021-2023 C-Class, E-Class, S-Class, CLS, SL, GT, GLC, GLE, GLS, and G-Class vehicles. Please refer to MBUSA's recall report for specific vehicle details. The fuel pump may shutdown, which can result in a loss of drive power.

    Risk: A loss of drive power can increase the risk of a crash.

    Remedy: Dealers will replace the fuel pump, free of charge. Owner notification letters were mailed on June 14, 2024. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2023070012.

  2. NHTSA 22V365000May 20, 2022Electrical System242,722 vehiclesOver-the-air fix

    Electrical system:software

    Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2017-2022 CLA-Class, GLA-Class, GLE-Class, GLS-Class, SLC-Class, A-Class, AMG GT-Class, C-Class, E-Class, S-Class, SL-Class, GLC-Class, CLS-Class, GLB-Class, and G-Class vehicles. Please refer to MBUSA's recall report for specific vehicle model details. An error in the communication module's SIM card software can cause a mobile network connection failure, disabling the emergency call (eCall) system.

    Risk: A disabled eCall system would prevent a vehicle occupant from contacting the emergency services call center in an emergency, potentially delaying emergency responders and increasing the risk of injury.

    Remedy: The communication module software will be updated through an Over-the-Air (OTA) update or by a dealer, free of charge. Owner notification letters were mailed July 8, 2022. Owner notification letters will be mailed in phases, on July 8, 2022, May 17, 2024, July 29, 2024, and September 27, 2024. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's numbers are for this recall is 2022060005 and 2023110006.

  3. NHTSA 22V232000Apr 8, 2022Collision Avoidance & Cameras126,443 vehicles

    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."

    Risk: An inoperable rearview camera display reduces the driver's rear view, increasing the risk of a crash.

    Remedy: Dealers will update the rearview camera software, free of charge. Owner notification letters were mailed July 15, 2022. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2022060007.

See all 6 recalls for the 2021 Mercedes-Benz AMG C43 →

2021 Mercedes-Benz AMG C43 fuel economy and fuel cost

City
19 MPG
Highway
27 MPG
Combined
22 MPG
Annual fuel cost (EPA)
$3,650
15,000 mi/yr
Fuel
Premium
Current regular gas
$4.32/gal
national avg.

EPA figures; median across configurations of this model year. Estimate your own cost with the fuel cost calculator.

2021 compared with other AMG C43 years

Complaint Index by model year (0 = fewest issues, 100 = most)0255075100201620172018201920202021202220232024
Complaint Index: 0 = fewest issues, 100 = most, relative to other years of this model. Avoid Caution Good Best
YearVerdictIndexComplaintsRecallsMPG
2019Caution5061222
2020Avoid8812922
2021No verdict131622
2022No verdict381122
2023No verdict633722

All Mercedes-Benz AMG C43 years: best and worst →

Frequently asked questions

Is the 2021 Mercedes-Benz AMG C43 reliable?
NHTSA data shows only 1 complaint and a complaint index of 13 for the 2021 AMG C43, ranking 8th out of 9 model years, making it one of the better years based on owner complaints.
What recalls affect the 2021 Mercedes-Benz AMG C43?
The 2021 AMG C43 has 6 recalls covering the fuel system, electrical system, collision avoidance cameras, structure/body seat position switches, and rear headrest bushings. None are do-not-drive recalls.
What is the main problem area for the 2021 AMG C43?
The only reported problem area is Suspension, Wheels & Tires, accounting for 100% of the single complaint filed, at a median mileage of 12,000.
How does the 2021 AMG C43 compare to other years?
The 2021 model has a complaint index of 13, far lower than 2017 (100), 2018 (75), and 2020 (88), which are marked Avoid, making 2021 comparatively favorable.
What is the fuel economy of the 2021 AMG C43?
EPA rates the 2021 AMG C43 at 22 MPG combined (19 city/27 highway), with an annual fuel cost of $3,650.

Sources: NHTSA Office of Defects Investigation complaint and recall databases; U.S. EPA fuel economy data; NHTSA 5-Star Safety Ratings. Complaints are unverified owner reports.

Data updated Sep 24, 2026. Read the methodology and data sources. The Complaint Index is based on NHTSA owner complaints and recalls; it is not a reliability rating.