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Mercedes-Benz S400Model year report

2011 Mercedes-Benz S400 Problems

Complaints
5filed with NHTSA
Median mileage
93,500miles, 4 complaints with mileage
Recalls
2campaigns on record
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA crash rating
—no overall rating published
EPA fuel economy
21 mpgcombined, 3.5L 6-cyl · hybrid RWD · 19 city / 25 hwy

Sources: NHTSA records for the 2011 Mercedes-Benz S400 (complaints, recalls, investigations), EPA fuel economy. Report an error

NHTSA recorded 5 consumer complaints for the 2011 Mercedes-Benz S400. The part named most often is electrical system, with 2 complaints (40% of the total), followed by engine (2) and fuel system (1). 4 of the complaints include a mileage, and 25% of those were filed for vehicles with under 50,000 miles; the median is 93,500 miles. NHTSA lists 2 recall campaigns and 67 technical service bulletins for this model year. Electrical system complaints overlap with 19 technical service bulletins filed under the same part. Engine 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

Fuel system: “I bought a 2011 MB S400 last year. Everything was good till 3 months ago. I smelled a very bad gas leak one day and it gets worse after I fuel my thank. Nobody wants to seat my car after I buy a gas. I realized there is a gas on my driveway under my passenger seat. When I googled it, there is a recall for MB W221 for 2011 models because of the Fuel Filter parts problem. It's not designed for the heat. Somehow, some 2011 s are not part of this recall, and MB doesn't stand on their car even have the same problem. …”

NHTSA complaint #11524808, filed 2023-06

Mileage when problems were reported

25% of the 4 complaints with a mileage were filed for vehicles with under 50,000 miles; the middle half falls between 65,000 and 122,000 miles.

0%0–1025%10–250%25–5025%50–750%75–10050%100–1500%150+
Share of complaints by mileage when the problem was reported, in thousands of miles (4 complaints with mileage). Red bars: under 50,000 miles. Bucket widths differ. Median: 93,500 miles.

Complaints by year filed

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

2018320212023
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.

Fuel economy and running cost

EPA ratings for each 2011 Mercedes-Benz S400 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
S400 Hybrid RWD3.5L 6-cyl · hybrid7-speed automatic192521$3,900

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

Recall details for the 2011 Mercedes-Benz S400 → · 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. 67 on record; the latest 10 are shown.

See all 67 bulletins →

Other model years of the Mercedes-Benz S400

YearComplaintsMedian miRecallsCrash ★MPGScore (50 = typical)Trend
2011593,5002—21—Not enough data
20101669,0000—21—Falling

All Mercedes-Benz S400 model years

Frequently asked questions

How many NHTSA complaints does the 2011 Mercedes-Benz S400 have?

NHTSA recorded 5 consumer complaints for the 2011 Mercedes-Benz S400 as of Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

What part of the 2011 Mercedes-Benz S400 is reported most often?

Electrical system is named most often, in 2 complaints (40% of the total), followed by engine with 2.

Has the 2011 Mercedes-Benz S400 been recalled?

NHTSA lists 2 recall campaigns for this model year. To check a specific vehicle, enter its VIN at nhtsa.gov/recalls.

What gas mileage does the 2011 Mercedes-Benz S400 get?

The EPA rates the 2011 Mercedes-Benz S400 (S400 Hybrid, 3.5L 6-cyl · hybrid) at 21 mpg combined, 19 city and 25 highway, with an estimated annual fuel cost of $3,900 at 15,000 miles a year. Other engine and drive versions are rated differently.

At what mileage are problems with the 2011 Mercedes-Benz S400 reported?

Among the 4 complaints that include a mileage, the median is 93,500 miles and the middle half falls between 65,000 and 122,000 miles; 25% 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. 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.