The contact owns a 2020 Mercedes-Benz E350. The contact stated while his wife was driving and stopped at a traffic signal, the gasoline saving START/STOP feature turned off the vehicle however, upon depressing the accelerator pedal, the vehicle failed to restart. The contact stated that the failure caused the vehicle to roll into the intersection at approximately 3 MPH. The contact's wife was…
2020 Mercedes-Benz E-Class powertrain problems
moderate Owners of the 2020 Mercedes-Benz E-Class have filed 3 NHTSA complaints about the powertrain at roughly $2,500 to repair (U.S. federal records, as of October 2026). Source: NHTSA Office of Defects Investigation. See powertrain across all vehicles →
Complaints
3
Recalls
0
Avg fix
$2,500
| Model year | powertrain complaints |
|---|---|
| 2016 E-Class | 4 |
| 2017 E-Class | 15 |
| 2018 E-Class | 7 |
| 2019 E-Class | 4 |
| 2020 E-Class (this page) | 3 |
| 2021 E-Class | 3 |
| 2023 E-Class | 4 |
When does it fail?
Of the 3 powertrain complaints filed for the 2020 Mercedes-Benz E-Class, here's the actual mileage breakdown — failures cluster heaviest at 25,000-50,000 mi.
0-25k
25-50k
50-75k
75-100k
100-125k
125-150k
150k+
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
What stands out
Of the 16 model years of Mercedes-Benz E-Class we track for powertrain problems, this one has the fewest owner complaints on file (3).
What owners are reporting 3 most recent
The contact owns a 2020 Mercedes-Benz E-450. The contact stated that while driving at an undisclosed speed, the accelerator pedal was depressed and there was an abnormal sound coming from the vehicle. The dealer was contacted by phone and made aware of the failure. The vehicle was taken to the dealer where the failure was confirmed and was associated with an unrepaired recall. The contact…
The Engine Electrical harness is completely corroded after only 50,000 miles requiring a 4k+ repair. Oil leaking from the camshaft sensor pushed it way all throughout harness. There are no warnings as it will only be noticeable after doing routine maintenance OUTSIDE of the manufactures warranty. While driving you may lose complete power or slight power loss due to engine misfiring and low system…
Had powertrain trouble with your 2020 Mercedes-Benz E-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 powertrain problem on the 2020 Mercedes-Benz E-Class?
It's a documented issue but not catastrophic. 3 complaints have been filed. Repairs average $2,500 and most owners catch it before it causes a breakdown.
At what mileage does the powertrain typically fail?
Based on the 3 complaints filed, powertrain issues most often appear around 57,863 miles. Some report problems earlier; some make it well past 150,000 with no symptoms. Maintenance habits matter — vehicles that received timely fluid services and were not regularly overworked tend to last longer.
What does it cost to fix?
Independent shops typically charge around $2,500 for powertrain 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 powertrain?
No active recalls currently cover powertrain 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/2020/Mercedes-Benz/E-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.