Skip to content
Mercedes-Benz E400Model year report

2017 Mercedes-Benz E400 Problems

Complaints
20filed with NHTSA
Median mileage
3,500miles, 7 complaints with mileage
Recalls
8campaigns on record
Trend
FallingComplaints filed in the last 3 full calendar years are at least 25% lower than in the 3 years before.
NHTSA crash rating
5 / 5stars overall, 4 rated versions
EPA fuel economy
23 mpgcombined, 3.0L 6-cyl RWD · 20 city / 29 hwy

Sources: NHTSA records for the 2017 Mercedes-Benz E400 (complaints, recalls, investigations), NHTSA crash tests, EPA fuel economy. Report an error

NHTSA recorded 20 consumer complaints for the 2017 Mercedes-Benz E400. The part named most often is air bags, with 16 complaints (80% of the total), followed by seats (2) and electrical system (1). 7 of the complaints include a mileage, and 100% of those were filed for vehicles with under 50,000 miles; the median is 3,500 miles. Of all complaints, 4 an injury, according to the filers. NHTSA lists 8 recall campaigns and 209 technical service bulletins for this model year. Air bags complaints overlap with 3 recall campaigns covering the inflator module and 1 technical service bulletin filed under the same part. Seats complaints overlap with 4 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

Air bags: “Takata airbag defect. I received notice of recall from mb in november, 2017, almost 8 months ago. Despite numerous followups with both mb and the dealer, neither mb or the mb dealer can tell me when the parts will be available to correct this serious safety problem. Please help before my wife or I or other persons are injured or worse. The mb notice states that the airbag may deploy due to insufficient electrical grounding, an electrostatic discharge and a broken steering module clock spring, causing injury and risk of a crash.”

NHTSA complaint #11092301, filed 2018-05, 3,500 miles

Seats: “Safety Issue. The Chrome on the lever to make the seat move forward to access the back seat has sharp razor blade ridges. It has cut my hand open multiple times as well as my wife and a friend. A lot of blood, this is a serious issue. When I brought my car to the Mercedes Service center the agent told me this is a known problem and he too has cut his hand open on customers cars. This is not from wear and tear, this lever is used in frequently, I see a lot of complaints on the blogs too. Mercedes will not fix it. The Part is only $270 but they want $650 to install it.”

NHTSA complaint #11516573, filed 2023-04

Other or unknown: “I was driving down the interstate when the panoramic sunroof suddenly shattered. Luckily my shade was closed but it is leaving me with a costly repair bill. I was not driving near any other vehicles, had not gone under an overpass, nor did a rock hit my roof. How could this happen and how can this be resolved? Who do I contact?”

NHTSA complaint #11433484, filed 2021-09

Mileage when problems were reported

100% of the 7 complaints with a mileage were filed for vehicles with under 50,000 miles; the middle half falls between 2,000 and 20,000 miles.

57%0–1014%10–2529%25–500%50–750%75–1000%100–1500%150+
Share of complaints by mileage when the problem was reported, in thousands of miles (7 complaints with mileage). Red bars: under 50,000 miles. Bucket widths differ. Median: 3,500 miles.

Complaints by year filed

Trend: falling. Complaints filed in the last 3 full calendar years are at least 25% lower than in the 3 years before.

201720182019620202021202320252026
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 2017 Mercedes-Benz E400. 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 · wagon 4WD★★★★★5 / 5555 · 9.7% risk
E-Class · sedan 4WD★★★★★5 / 5555 · 9.7% risk
E-Class · sedan RWD★★★★★5 / 5555 · 9.7% risk
E-Class · wagon RWD★★★★★5 / 5555 · 9.7% risk

Driver aids listed by NHTSA for the 2017 model year: forward collision warning standard, lane departure warning optional, automatic emergency braking not available.

Neighbouring years: 2016: 4 stars overall; 2018: 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 2017 Mercedes-Benz E400 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
E400 4matic (station wagon) 4WD3.0L 6-cyl9-speed automatic192521$3,900
E400 4matic Coupe 4WD3.0L 6-cyl7-speed automatic202823$3,550
E400 Convertible RWD3.0L 6-cyl7-speed automatic202923$3,550
E400 Coupe RWD3.0L 6-cyl7-speed automatic202923$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 8 recalls for the 2017 Mercedes-Benz E400 → · 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. 209 on record; the latest 10 are shown.

See all 209 bulletins →

Other model years of the Mercedes-Benz E400

YearComplaintsMedian miRecallsCrash ★MPGScore (50 = typical)Trend
20182315,00013522—Rising
2017203,5008523—Falling
20163440,0007423Not compared (fewer than 3 comparable model years)Falling
20151515,0007423—Falling

All Mercedes-Benz E400 model years

Frequently asked questions

How many NHTSA complaints does the 2017 Mercedes-Benz E400 have?

NHTSA recorded 20 consumer complaints for the 2017 Mercedes-Benz E400 as of Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

What part of the 2017 Mercedes-Benz E400 is reported most often?

Air bags is named most often, in 16 complaints (80% of the total), followed by seats with 2.

Has the 2017 Mercedes-Benz E400 been recalled?

NHTSA lists 8 recall campaigns for this model year. To check a specific vehicle, enter its VIN at nhtsa.gov/recalls.

How did the 2017 Mercedes-Benz E400 do in NHTSA crash tests?

NHTSA's 5-Star Safety Ratings give the 2017 Mercedes-Benz E400 5 out of 5 stars overall, across 4 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 2017 Mercedes-Benz E400 get?

The EPA rates the 2017 Mercedes-Benz E400 (E400 Convertible, 3.0L 6-cyl) at 23 mpg combined, 20 city and 29 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 2017 Mercedes-Benz E400 reported?

Among the 7 complaints that include a mileage, the median is 3,500 miles and the middle half falls between 2,000 and 20,000 miles; 100% 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.