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Mercedes-Benz E 450Model year report

2020 Mercedes-Benz E 450 Problems

Complaints
9filed with NHTSA
Median mileage
41,000miles, 6 complaints with mileage
Recalls
7campaigns on record
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA crash rating
5 / 5stars overall, 2 rated versions
EPA fuel economy
23 mpgcombined, 3.0L 6-cyl RWD · 20 city / 27 hwy

Sources: NHTSA records for the 2020 Mercedes-Benz E 450 (complaints, recalls, investigations), NHTSA crash tests, EPA fuel economy. Report an error

NHTSA recorded 9 consumer complaints for the 2020 Mercedes-Benz E 450. The part named most often is back-over prevention, with 3 complaints (33% of the total), followed by body and structure (2) and engine (1). 6 of the complaints include a mileage, and 83% of those were filed for vehicles with under 50,000 miles; the median is 41,000 miles. Of all complaints, 1 a fire, 1 an injury, according to the filers. NHTSA lists 7 recall campaigns and 240 technical service bulletins for this model year. Back-over prevention complaints overlap with 1 recall campaign and 3 technical service bulletins filed under the same part. Body and structure complaints overlap with 18 technical service bulletins filed under the same part.

This model year has fewer than 25 complaints on record, so the numbers below can change a lot with a few new reports.

Which parts are reported most

Complaints can name more than one part, so the counts add up to more than the total. Select a part to see its complaints, recalls and bulletins.

Example complaints

Back-over prevention (rear camera): “The contact owns a 2020 Mercedes-Benz E-450. The contact stated that while attempting to reverse, the rearview camera became inoperative. The contact stated that the rearview camera image was frozen. The contact also expressed concerns that the emblem located on the rear of the vehicle was intermittently blocking the rearview image. The dealer was contacted. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The approximate failure mileage was 48,000.”

NHTSA complaint #11694082, filed 2025-10, 48,000 miles

Body and structure: “Rear glass window on convertible soft top is prematurely separating/delaminating from top assembly on 2020 Mercedes-Benz E350 convertible with under 8,000 miles. Glass is integrated into the convertible top and failure may lead to reduced rear visibility, possible glass detachment, water intrusion, and safety hazard while driving. This appears premature and inconsistent with expected vehicle life.”

NHTSA complaint #11738921, filed 2026-05

Engine: “On October 2, 2021, car caught fire in the engine compartment while car was turned off under carport of home. Car mileage was 18,000. The car was serviced by Mercedes of Marin and driven approximately 25 miles after the service when incident occurred. No warning lamps or messages appeared. Fire damage to carport and garage of house and fence and gate. Allstate, the insurance carrier is performing a fire inspection of the vehicle.”

NHTSA complaint #11437940, filed 2021-10

Latches, locks and linkages: “The contact owns a 2020 Mercedes-Benz E450. The contact stated while attempting to open and close the door, the door failed to remain open. Additionally, on several occasions, the door closed independently. The vehicle was repaired however, the failure persisted. The manufacturer was informed of the failure. The contact was awaiting a callback. The failure mileage was approximately 8,000.”

NHTSA complaint #11419360, filed 2021-06, 8,000 miles

Mileage when problems were reported

83% of the 6 complaints with a mileage were filed for vehicles with under 50,000 miles; the middle half falls between 8,000 and 48,000 miles.

33%0–100%10–2550%25–5017%50–750%75–1000%100–1500%150+
Share of complaints by mileage when the problem was reported, in thousands of miles (6 complaints with mileage). Red bars: under 50,000 miles. Bucket widths differ. Median: 41,000 miles.

Complaints by year filed

Fewer than 15 complaints, too few for a reliable trend.

202020212202220242025220262
Complaints by year the complaint was filed with NHTSA. Red bars: the last 3 full calendar years used for the trend. The current year (2026) is partial.

Crash test ratings

NHTSA's 5-Star Safety Ratings for the 2020 Mercedes-Benz E 450. Frontal results are shown driver / passenger; rollover shows the star rating and NHTSA's estimated risk of rolling over in a single-vehicle crash.

VersionOverallFrontalSideSide poleRollover
E-Class · sedan 4WD★★★★★5 / 5555 · 9.7% risk
E-Class · sedan RWD★★★★★5 / 5555 · 9.7% risk

Neighbouring years: 2019: same overall rating; 2021: same overall rating. A redesign between years can change both the car and the test.

Source: NHTSA New Car Assessment Program (5-Star Safety Ratings), nhtsa.gov/ratings.

Fuel economy and running cost

EPA ratings for each 2020 Mercedes-Benz E 450 version. Annual fuel cost is the EPA's estimate at its current fuel prices for 15,000 miles a year (55% city driving).

VersionEngineTransmissionCityHwyComb.Fuel / yr
E450 Convertible RWD3.0L 6-cyl9-speed automatic202723$3,550
E450 Coupe RWD3.0L 6-cyl9-speed automatic202823$3,550

Source: U.S. EPA and Department of Energy, fueleconomy.gov. Ratings are for comparing vehicles; real-world mileage varies with driving and conditions.

Recalls and investigations

See all 7 recalls for the 2020 Mercedes-Benz E 450 → · Check a VIN at nhtsa.gov/recalls

Technical service bulletins

TSBs are manufacturer notes to dealers about known repair procedures. They are not recalls and do not by themselves mean a vehicle has a fault. 240 on record; the latest 10 are shown.

See all 240 bulletins →

Other model years of the Mercedes-Benz E 450

YearComplaintsMedian miRecallsCrash ★MPGScore (50 = typical)Trend
2023176004525—Too new
2022114005525—Not enough data
202171,00014525—Not enough data
2020941,0007523—Not enough data
2019177,20012523—Rising

All Mercedes-Benz E 450 model years

Frequently asked questions

How many NHTSA complaints does the 2020 Mercedes-Benz E 450 have?

NHTSA recorded 9 consumer complaints for the 2020 Mercedes-Benz E 450 as of Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

What part of the 2020 Mercedes-Benz E 450 is reported most often?

Back-over prevention is named most often, in 3 complaints (33% of the total), followed by body and structure with 2.

Has the 2020 Mercedes-Benz E 450 been recalled?

NHTSA lists 7 recall campaigns for this model year. To check a specific vehicle, enter its VIN at nhtsa.gov/recalls.

How did the 2020 Mercedes-Benz E 450 do in NHTSA crash tests?

NHTSA's 5-Star Safety Ratings give the 2020 Mercedes-Benz E 450 5 out of 5 stars overall, across 2 rated versions (body style and drive). Ratings from different model years are only comparable when the vehicle was not redesigned in between.

What gas mileage does the 2020 Mercedes-Benz E 450 get?

The EPA rates the 2020 Mercedes-Benz E 450 (E450 Convertible, 3.0L 6-cyl) at 23 mpg combined, 20 city and 27 highway, with an estimated annual fuel cost of $3,550 at 15,000 miles a year. Other engine and drive versions are rated differently.

At what mileage are problems with the 2020 Mercedes-Benz E 450 reported?

Among the 6 complaints that include a mileage, the median is 41,000 miles and the middle half falls between 8,000 and 48,000 miles; 83% were filed for vehicles with under 50,000 miles.

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate. Crash ratings are from NHTSA’s New Car Assessment Program. Fuel economy is from the EPA and DOE (fueleconomy.gov).

Complaint counts come from NHTSA’s public complaint database; we count each complaint once. The source records for this vehicle are on nhtsa.gov. Scores and trends are our own summaries of that data, described in the methodology. This page is not legal, safety or repair advice: for a specific vehicle, check its VIN at nhtsa.gov/recalls and ask a qualified mechanic. See an error? Tell us.