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Mercedes-Benz CLS400Model year report

2015 Mercedes-Benz CLS400 Problems

Complaints
8filed with NHTSA
Median mileage
23,250miles, 6 complaints with mileage
Recalls
4campaigns 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
24 mpgcombined, 3.0L 6-cyl RWD · 20 city / 29 hwy

Sources: NHTSA records for the 2015 Mercedes-Benz CLS400 (complaints, recalls, investigations), EPA fuel economy. Report an error

NHTSA recorded 8 consumer complaints for the 2015 Mercedes-Benz CLS400. The part named most often is electrical system, with 3 complaints (38% of the total), followed by electronic stability control (2) and brakes (1). 6 of the complaints include a mileage, and 100% of those were filed for vehicles with under 50,000 miles; the median is 23,250 miles. Of all complaints, 1 a fire, according to the filers. NHTSA lists 4 recall campaigns and 106 technical service bulletins for this model year. Electrical system complaints overlap with 35 technical service bulletins filed under the same part. Electronic stability control complaints overlap with 2 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

Electrical system: “Despite NHTSA recall # 15v137 was issued on march 12th,2015 I was sold a CLS400 on march 14th. Neither at time of sale nor thereafter I was notified about this recall. It seems that dealership was in violation of mercedes benz USA's stop-sale order issued to dealers on march 13th.”

NHTSA complaint #10721652, filed 2015-05, 30 miles

Electronic stability control: “This is the 2nd time my 2015 CLS400 mercedes has been returned to the dealership for this reoccurring problem of the electronic command system totally shutting down while the vehicle is being driven on the street and frwy.navigation blinks on & off,side view mirrors fold in & out while vehicle is being driven,radio turns on & off,electronic braking system activated itself while I was driving on the frwy & around town,keyless entry would not work so I had to use the manual key to get into vehicle & remove push start button to insert the key to start vehicle,windows would not work nor air…”

NHTSA complaint #10778277, filed 2015-09, 9,000 miles

Brakes: “A few times a month, the emergency brake light comes on and the car's engine and volume start to decrease. The temporary fix, is to release the emergency brake.”

NHTSA complaint #11319021, filed 2020-03, 40,000 miles

Engine: “2015 mercedes benz CLS 400 - Engine caught fire while in a parking lot approximately 10 minutes after i parked it and went inside department store. The vehicle had no open recalls”

NHTSA complaint #11504181, filed 2023-01

Mileage when problems were reported

100% of the 6 complaints with a mileage were filed for vehicles with under 50,000 miles; the middle half falls between 9,000 and 40,000 miles.

33%0–1017%10–2550%25–500%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: 23,250 miles.

Complaints by year filed

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

201532019202020222023
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 2015 Mercedes-Benz CLS400 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
CLS400 RWD3.0L 6-cyl7-speed automatic202924$3,400
CLS400 4matic 4WD3.0L 6-cyl7-speed automatic192622$3,750

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 2015 Mercedes-Benz CLS400 → · 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. 106 on record; the latest 10 are shown.

See all 106 bulletins →

Other model years of the Mercedes-Benz CLS400

YearComplaintsMedian miRecallsCrash ★MPGScore (50 = typical)Trend
2015823,2504—24—Not enough data

All Mercedes-Benz CLS400 model years

Frequently asked questions

How many NHTSA complaints does the 2015 Mercedes-Benz CLS400 have?

NHTSA recorded 8 consumer complaints for the 2015 Mercedes-Benz CLS400 as of Nov 1, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

What part of the 2015 Mercedes-Benz CLS400 is reported most often?

Electrical system is named most often, in 3 complaints (38% of the total), followed by electronic stability control with 2.

Has the 2015 Mercedes-Benz CLS400 been recalled?

NHTSA lists 4 recall campaigns for this model year. To check a specific vehicle, enter its VIN at nhtsa.gov/recalls.

What gas mileage does the 2015 Mercedes-Benz CLS400 get?

The EPA rates the 2015 Mercedes-Benz CLS400 (CLS400, 3.0L 6-cyl) at 24 mpg combined, 20 city and 29 highway, with an estimated annual fuel cost of $3,400 at 15,000 miles a year. Other engine and drive versions are rated differently.

At what mileage are problems with the 2015 Mercedes-Benz CLS400 reported?

Among the 6 complaints that include a mileage, the median is 23,250 miles and the middle half falls between 9,000 and 40,000 miles; 100% were filed for vehicles with under 50,000 miles.

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Nov 1, 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.