fairly significant
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
9,500 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2015 Mercedes-Benz CLS400 brakes problems

brakes problem

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2015 Mercedes-Benz CLS400 Owner Comments

problem #2

Oct 192015


  • 10,000 miles


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 unsafe to drive & the customer service agent took my information & said someone would call me tomorrow afternoon about the situation.I also gave them the name of the dealership & my service advisors name whom I've had documenting the problems with the care as well as myself.the agent said they'd call him tomorrow & then me.

- Laguna Niguel, CA, USA

problem #1

Sep 142015


  • 9,000 miles
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. Vehicle was simply unsafe to drive.I purchased the vehicle on Dec 24 2014 and the problem started in Aug 2015 in which the dealership had my vehicle for 5-6 days & said they couldn't figure out what was wrong but confirmed my story because the computer system they plugged into confirmed the malfunctions.now sept2015 the car is back at the dealership for the 2nd time for the same reoccurring problems.all I know is the vehicle is unsafe to drive.the vehicle has 10,000 miles on it but was purchased brand new & I am the original owner.

- Laguna Niguel, CA, USA

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