Most common 2015 Mercedes-Benz CLS400 problems
Share of the 8 complaints; one complaint can involve more than one system. "~" is the median mileage when the problem started.
Mercedes-Benz CLS400 complaints by model year
2015 Mercedes-Benz CLS400 recalls (4)
Communication
Mercedes-Benz USA, LLC. (MBUSA) is recalling certain 2013-2017 vehicles due to a software fault that may cause the date and time for the emergency call system (eCall) to differ from the actual date and time, potentially relaying an inaccurate vehicle location.
Remedy: MBUSA has initiated an Over the Air (OTA) remote update. MBUSA will also notify owners, and dealers will check software for a successful OTA or update the communication module software as needed, free of charge.
Engine and engine cooling › Engine
Mercedes-Benz USA, LLC (MBUSA) is recalling certain model year 2016 Mercedes Benz E350, E400, E400 4Matic, E63 4M S AMG, E350 4Matic, E63-4M S AMG, 2015 CLS400, CLS400 4Matic, CLS550, CLS63-4M "P" AMG, and CLS550 4Matic vehicles manufactured April 16, 2015, to April 22, 2015.
Remedy: MBUSA will notify owners, and dealers will replace the rubber seal, in the engine compartment, free of charge. The recall began on September 2, 2015. MBUSA's number is 2015080001.
Exterior lighting
Mercedes-Benz USA, LLC. (MBUSA) is recalling certain model year 2015 CLS 400 and CLS 400 4matic, 2012-2015 CLS 550 and CLS 550 4matic, 2012-2013 CLS 63, 2014 CLS 63, and 2014-2015 CLS 63P. The affected vehicles have LED tail lights that may not light on the sides, reducing the rear side visibility of the vehicle.
Remedy: MBUSA will notify owners, and dealers will update the lighting controller software, free of charge. The recall began April 6, 2015. Owners may contact MBUSA customer service at 1-800-367-6372.
Structure › Body › Hood
Mercedes-Benz USA, LLC. (MBUSA) is recalling certain model year 2013-2015 E350 Sedan, E350 4Matic Sedan, E350 4Matic Station Wagon, E400 Hybrid Sedan, CLS 550 CGI, and CLS550 4Matic, 2013-2014 E550 4Matic Sedan, 2013 E63 Sedan, E63 Station Wagon and CLS63, 2014-2015 CLS63 4Matic, E63 4Matic Sedan, E63 4Matic Sedan "S", and E63…
Remedy: MBUSA will notify owners, and dealers will attach four additional retaining clips to the rubber seal, free of charge. The recall began March 6, 2015. Owners may contact MBUSA customer service at 1-201-573-5339.
NHTSA defect investigations
Federal safety investigators have looked into a possible defect involving the 2015 Mercedes-Benz CLS400:
Desiccated Air Bag Inflator Rupture
From 2000 through 2017, Takata produced millions of air bag inflators using two types of phase-stabilized ammonium nitrate ("PSAN") propellant -- propellant 2004 and propellant 2004L. After prolonged exposure to high temperature cycles and humidity, inflators using propellant 2004 can degrade, causing the propellant to burn too quickly when ignited.
What 2015 Mercedes-Benz CLS400 owners say
Electrical system
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 conditioning & it was a hot day.speedometer would not work & gas meter showed empty even though vehicle had a full tank. …
Total electrical failure which is causing command system to power on/off while vehicle is being driven,not allowing me to use navigation,windows(rolling up&down or not working at all),side view mirrors(flipping out & in,while vehicle is being driven)air conditioning,radio turning itself off/on.electronic breaking system activating itself while vehicle is being driven,speedometer not working.keyless functions not working had to remove hard key manually to open car door & remove push button starter manually to insert key.the car is unsafe to drive especially with the braking system activating itself as well as the multi malfunctions.this is now the 4th time the vehicle has been taken to the dealership for this problem.I have 10,000 miles on the car, purchased it dec 24,2014.I called mb USA customer service & reported the complaints/malfunctions to them & made them aware that the car was …
2015 Mercedes-Benz CLS400 engines & fuel economy
| Engine | Transmission | Drive | MPG city / hwy / combined |
|---|---|---|---|
| 3.0L 6-cyl turbo | 7-speed automatic | RWD | 20 / 29 / 24 |
EPA ratings. Class: Compact car.
Frequently asked questions
Is the 2015 Mercedes-Benz CLS400 a good car?
That is a low number of complaints for a car on sale this long. So far owners have filed 8 complaints with NHTSA.
What is the most common problem with the 2015 Mercedes-Benz CLS400?
The electrical system — 3 complaints, 38% of all complaints for this model year. Next are the stability & traction control (2) and lights (1).
How many recalls does the 2015 Mercedes-Benz CLS400 have?
There are 4 recalls for the 2015 Mercedes-Benz CLS400, the most recent from November 1, 2019 (communication). Recall repairs are free at any authorized dealer — check whether yours has been done with the VIN recall check.
At what mileage do 2015 Mercedes-Benz CLS400 problems happen?
The median mileage reported in complaints is about 37,000 miles; 100% of problems with a recorded mileage started before 50,000 miles.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.