The contact owns a 2021 Mercedes-Benz S580. The contact received notification of NHTSA Campaign Number: 24V704000 (ENGINE AND ENGINE COOLING); however, the part to do the recall repair was unavailable. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure. VIN…
2021 Mercedes-Benz S-Class engine problems
moderate Owners of the 2021 Mercedes-Benz S-Class have filed 6 NHTSA complaints about the engine at roughly $3,100 to repair (U.S. federal records, as of September 2026). Source: NHTSA Office of Defects Investigation. See engine across all vehicles →
Complaints
6
Recalls
0
Avg fix
$3,100
| Model year | engine complaints |
|---|---|
| 2018 S-Class | 6 |
| 2021 S-Class (this page) | 6 |
| 2022 S-Class | 3 |
What stands out
Among the 5 model years of Mercedes-Benz S-Class in our records for engine problems, this one ranks #2 by owner-complaint volume.
What owners are reporting 4 most recent
The contact owns a 2021 Mercedes-Benz S580. The contact received a notification for NHTSA Campaign Number: 21V843000 (Engine and Engine Cooling) however, the part to do the recall repair was unavailable. The dealer had been notified about the recall; however, the contact was informed that the parts were not yet available. The manufacturer had also been notified of the recall but offered no…
The contact owns a 2021 Mercedes-Benz. The contact stated while driving at 10 MPH, the vehicle stalls until the contact engages the vehicle in sport mode. The vehicle was not taken to an independent mechanic or dealer for diagnosis or repairs. The manufacturer was not notified of the failure and a case was opened. The contact was relating the failure to NHTSA Campaign Number: 24V704000 (ENGINE…
The contact owns a 2021 Mercedes-Benz S 580. The contact received notification of NHTSA Campaign Number: 24V704000(Engine and Engine Cooling); however, the part to do the recall repair was not yet available. The contact stated that while starting the vehicle, the engine made an abnormal ticking sound. There was no warning light illuminated. The local dealer was contacted. The vehicle was not…
Had engine trouble with your 2021 Mercedes-Benz S-Class?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the engine problem on the 2021 Mercedes-Benz S-Class?
It's a documented issue but not catastrophic. 6 complaints have been filed. Repairs average $3,100 and most owners catch it before it causes a breakdown.
At what mileage does the engine typically fail?
Mileage data is limited for this issue. Owners report failures across a wide range, suggesting cause is more about driving conditions and maintenance than mileage alone.
What does it cost to fix?
Independent shops typically charge around $3,100 for engine repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to engine?
No active recalls currently cover engine issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2021/Mercedes-Benz/S-Class.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.