Research

2021 Mercedes-Benz AMG C63 SRecalls, problems, MPG & safety

NHTSA lists 4 safety recalls and 1 owner complaint for the 2021 Mercedes-Benz AMG C63 S. Most complaints involve seat belts (1).

Combined MPG
—
No EPA rating found
NHTSA overall
—
Not rated by NCAP
Safety recalls
4campaigns
Latest Jun 2023
Owner complaints
1
Top: seat belts
Fuel cost / yr
—
No EPA estimate
01 —Recalls

Safety recalls

4 NHTSA campaigns · applies to some vehicles, check your VIN

Fuel system

Free remedy

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.

Fuel system, gasolineReported Jun 26, 2023NHTSA 23V445000

Back over prevention: display function

Free remedy

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."

Back over preventionReported Apr 8, 2022NHTSA 22V232000

Seats: mid

Free remedy

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.

SeatsReported May 28, 2021NHTSA 21V406000
Data from NHTSA Recalls API · synced Nov 14, 2026 · All recall detailsNHTSA vehicle page
02 —Complaints

Owner complaints by component

1 complaints filed with NHTSA · Aug 2026 – Aug 2026
  1. Seat belts1

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.

By model year

Complaints for each AMG C63 S model year we’ve synced.

Only one model year synced so far.

Crashes reported
0
Fires reported
0
Injuries reported
0
Deaths reported
0
Data from NHTSA Complaints API · synced Nov 14, 2026NHTSA vehicle page
03 —Common problems

What owners report most

Verbatim excerpts from NHTSA complaints, by component

Seat belts

1 report
“Both driver and passenger seatbelts do not fully retract and remain loose. Must be manually guided back into mechanism. I see that there has been a recall for the cabriolet version of this vehicle platform but not for the coupe version. I am unsure why there hasn't also been a recall for the coupe C205 as it is the same platform and having the same exact issue. I have read on forums that there are also other drivers of the coupe platform that also have the same issue with the seatbelts not retracting so this appears to be a common issue with the vehicles safety devices.”
Owner complaint to NHTSAFiled Aug 4, 2026Seat beltsODI 11754860
Data from NHTSA Complaints API (owner reports, unverified) · synced Nov 14, 2026
04 —Safety

NHTSA 5-Star Safety Ratings

New Car Assessment Program
NHTSA has not published 5-Star Safety Ratings for the 2021 Mercedes-Benz AMG C63 S as of Nov 14, 2026.
Data from NHTSA NCAP Safety Ratings API · synced Nov 14, 2026
05 —Maintenance

Maintenance basics

General guidance, not the OEM schedule. Check your owner’s manual.
General guidance
ItemMilesTimeNote
Engine oil & filter5,000–10,000 mi6–12 monthsFollow the oil-life monitor if fitted
Tire rotation5,000–7,500 miEvery oil changeCheck pressure monthly
Engine air filter15,000–30,000 mi1–2 yearsSooner in dusty areas
Cabin air filter15,000–25,000 mi1–2 years
Brake fluid—2–3 yearsAbsorbs moisture over time
Coolant60,000–100,000 mi5–10 yearsLong-life coolants last longer
Spark plugs60,000–100,000 mi—Iridium/platinum plugs at the long end
12V battery—3–5 yearsHeat shortens battery life
  • Engine oil & filter5,000–10,000 mi
    6–12 months
  • Tire rotation5,000–7,500 mi
    Every oil change
  • Engine air filter15,000–30,000 mi
    1–2 years
  • Cabin air filter15,000–25,000 mi
    1–2 years
  • Brake fluid—
    2–3 years
  • Coolant60,000–100,000 mi
    5–10 years
  • Spark plugs60,000–100,000 mi
    —
  • 12V battery—
    3–5 years
Typical intervals for modern cars. Severe service (towing, short trips, extreme heat or cold) shortens them.
07 —FAQ

2021 AMG C63 S questions

How many recalls does the 2021 Mercedes-Benz AMG C63 S have?

4 safety recalls as of Nov 14, 2026, according to NHTSA. Recall repairs are free at a dealer. Check your VIN to see whether your car is included and whether the repair was done.

What are the most common 2021 Mercedes-Benz AMG C63 S problems?

Owners filed 1 complaints with NHTSA. The most-cited components are seat belts (1). Complaints are unverified owner reports and aren't adjusted for how many cars were sold.

Data from NHTSA & EPA · synced Nov 14, 2026