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Mercedes-Benz CLS550Model year report

2014 Mercedes-Benz CLS550 Problems

Complaints
10filed with NHTSA
Median mileage
74,717miles, 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
20 mpgcombined, 4.7L 8-cyl RWD · 17 city / 25 hwy

Sources: NHTSA records for the 2014 Mercedes-Benz CLS550 (complaints, recalls, investigations), EPA fuel economy. Report an error

NHTSA recorded 10 consumer complaints for the 2014 Mercedes-Benz CLS550. The part named most often is suspension, with 2 complaints (20% of the total), followed by air bags (1) and brakes (1). 6 of the complaints include a mileage, and 17% of those were filed for vehicles with under 50,000 miles; the median is 74,717 miles. Of all complaints, 1 involved a crash, 1 an injury, according to the filers. NHTSA lists 4 recall campaigns and 111 technical service bulletins for this model year. Suspension complaints overlap with 3 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

Suspension: “I just had 2 tires replaced and on the way home I hit a pothole both front air shocks failed. I filed a claim and the insurance company won’t pay out either. Normal wear and tear does not make both air shocks failed.”

NHTSA complaint #11704776, filed 2025-12

Air bags: “The contact owned a 2014 Mercedes-Benz CLS550. While driving less than 20 MPH, the contact's vehicle was struck on the front driver's side fender by another vehicle. The air bag did not deploy. The contact sustained brain, neck, and lower back injuries that required medical attention. A police report was filed. The vehicle was towed to the insurance lot and deemed destroyed. The vehicle was not diagnosed. The dealer and manufacturer were not contacted. The approximate failure mileage was 62,000.”

NHTSA complaint #11187069, filed 2019-03, 62,000 miles

Brakes: “After the Mercedes dealer replaced the corroded rear sub frame under the 20 year extended warranty, my brake line failed so I took it back & found out that the brake lines were corroded. I paid nothing for the subframe since it was under the warranty but I ended up paying $4114 to replace the corroded brake lines. The dealer should have checked for corrosion while the subframe was out of the car, especially since this is a known issue. The parts were only $380 and $3800+ was labor. My brakes completely failed while driving on Christmas Eve. …”

NHTSA complaint #11711966, filed 2026-01

Fuel system: “While vehicle was stationary in garage, we began noticing a profuse gas/fuel smell. It became increasingly strong in and out of the vehicle. Approximately 3 days after smell was noticed, I contacted the local mercedes benz dealership to advise of the issue. I also did some research online, and discovered that previous years specifically; 2006-2011 cls class vehicles exhibited the same defect which was addressed with the NHTSA and to which mb-USA agreed to extend the warranty for covered fuel tank components from the original 4 years to 15 years. …”

NHTSA complaint #11338036, filed 2020-07, 82,000 miles

Mileage when problems were reported

17% of the 6 complaints with a mileage were filed for vehicles with under 50,000 miles; the middle half falls between 62,000 and 82,000 miles.

17%0–100%10–250%25–5033%50–7550%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: 74,717 miles.

Complaints by year filed

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

20142017201920203202220252026
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 2014 Mercedes-Benz CLS550 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
CLS550 RWD4.7L 8-cyl7-speed automatic172520$4,100
CLS550 4matic 4WD4.7L 8-cyl7-speed automatic172419$4,350

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 2014 Mercedes-Benz CLS550 → · 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. 111 on record; the latest 10 are shown.

See all 111 bulletins →

Other model years of the Mercedes-Benz CLS550

YearComplaintsMedian miRecallsCrash ★MPGScore (50 = typical)Trend
20141074,7174—20—Not enough data
20122349,2803—20—Stable
20081780,0003—16—Stable
20073558,7004—16Not compared (before 2008)Falling
2006770,0001———Not enough data

All Mercedes-Benz CLS550 model years

Frequently asked questions

How many NHTSA complaints does the 2014 Mercedes-Benz CLS550 have?

NHTSA recorded 10 consumer complaints for the 2014 Mercedes-Benz CLS550 as of Nov 1, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

What part of the 2014 Mercedes-Benz CLS550 is reported most often?

Suspension is named most often, in 2 complaints (20% of the total), followed by air bags with 1.

Has the 2014 Mercedes-Benz CLS550 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 2014 Mercedes-Benz CLS550 get?

The EPA rates the 2014 Mercedes-Benz CLS550 (CLS550, 4.7L 8-cyl) at 20 mpg combined, 17 city and 25 highway, with an estimated annual fuel cost of $4,100 at 15,000 miles a year. Other engine and drive versions are rated differently.

At what mileage are problems with the 2014 Mercedes-Benz CLS550 reported?

Among the 6 complaints that include a mileage, the median is 74,717 miles and the middle half falls between 62,000 and 82,000 miles; 17% 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.