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10.0

really awful
Crashes / Fires:
1 / 0
Injuries / Deaths:
1 / 0
Average Mileage:
22,944 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.

2014 Mercedes-Benz E350 brakes problems

brakes problem

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2014 Mercedes-Benz E350 Owner Comments

problem #15

Mar 252023

E350

  • 126,000 miles

A D V E R T I S E M E N T S

The contact owns a 2014 Mercedes-Benz E350. The contact stated that the vehicle was taken to an independent mechanic who informed the contact that the brake lines were extremely rusted. The contact related the failure to NHTSA Action Number: DP20004. The vehicle was taken to the dealer; however, the vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 126,000.

- Bristol, CT, USA

problem #14

Jan 122023

E350

  • miles
While driving down the road at 60mph, I hit the brakes to slow down. I heard a pop and thunk from the rear of the vehicle. I thought it was some boxes in the back of my car and forgot about it. I then brought my car into the dealer for an engine computer update and during the inspection they found that the passenger rear control arm mount broke away from the sub frame and that the rear brake lines were heavily rusted. They quoted a new rear subframe and brake lines. If I was on the freeway and this happened or I had to take evasive maneuvers I most likely would have crashed. The mechanic told me the weld broke where the control arm mounts to the subframe. He inspected the rest of the vehicle and everything looks good. On a less than 9 year old vehicle the subframe should not have rusted enough to break. Especially on a safety issue like the suspension and brakes. Mercedes should have done a better job with their welds and with their rust proofing especially on safety components.

- Byron Center, MI, USA

problem #13

Sep 132022

E350

  • miles
I brought my car into Mercedes on 9/13/2022 and was told my brake lines and subframe were rusting. It's a 2014 with only 80k miles on it. I was told I had a year before it needed to be replaced/addressed. I brought the car in again on December 12, 2022 and they said on a scale of 1-10 the subframes and brake lines were a 7 and were a safety issue. After doing some research, I am clearly not the only owner of this model dealing with this issue. This is safety issue and should be recalled. Subframes and brake lines should not rust so quickly.

- Paramus, NJ, USA

problem #12

Nov 232022

E350

  • miles

A D V E R T I S E M E N T S

The car lost the brakes as I was driving. This was very sudden and there was no prior sensor indication. Upon inspection, it was discovered that the brake line broke and leaked the brake fluid as I was driving, causing the car to loose braking ability. Inspection of the brake line also showed severe rust in multiple parts of the brake line.

- Worcester , MA, USA

problem #11

Nov 292022

E350

  • 84,000 miles
Brake line to rear completely rusted through. Lost brake control while driving. Upon further inspection, the entire rear subframe has significant rust damage that warrants replacement.

- Baltimore, MD, USA

problem #10

Aug 062022

E350

  • miles
This issue is pertaining to a 2014 E350 Mercedes Benz. The brake system is in jeopardy. The subframe has rotted and cracked. Mercedes Benz is aware that this is a problem for many of their vehicles. While the right side of the subframe is rusted and beginning to crack, the left side of the subframe is totally rusted and busted out. The vehicle is routinely brought to the Mercedes Benz dealership for maintenance visits. It was making cracking sound in 2021, we brought it in to be serviced for that reason on 11/23/21. This issue was not noted at that time. Mercedes Benz indicated the solution was a lube. The issue persisted post visit. The car is infrequently driven because the primary driver teleworks. We returned the car to the dealership for an assessment 8/6/2022 due to ongoing concerns for our safety. The first indicator that there was a problem was the unfamiliar cracking sound as if the car could snap in half, then hard pulling to the left when braking. There was never a warning light or any other indicator on the dashboard or otherwise. The owners initiated the visit to the Mercedes Benz dealership. Mercedes Benz reported that they did not see the rust when they assessed the car for the cracking sound in 11/2021, furthermore that the rust and deterioration happens rapidly. Had the right side of the subframe also rusted and rotted out, this could have resulted in a total loss of control over the vehicle and been needlessly catastrophic. Warning indicators necessary and routine free inspection are warranted. Repairs for the subframe alone will cost more than $4000. This is a hardship. Further, it's unclear if the malfunctioning rear left caliper resulted from the rotted subframe. The vehicle appears to be in otherwise pristine condition. Mercedes Benz has never indicated there were any issues with the vehicle's subframe despite routine class service visits at the dealership. An internet search confirms this issue is not uncommon and possibly negligible.

- Burtonsville, MD, USA

problem #9

Jul 122022

E350

  • miles

A D V E R T I S E M E N T S

Vehicle is 9 years old, with 73000 miles. Dealer Service has advised that the rear subframe and brake lines are rusting and need to be replaced as a safety issue. Cost quoted was $8800. Mercedes agreed to pick up the cost of the parts and the dealer offered to split the installation cost, bringing my total down to $3150. On-line research reveals this is a common problem across several product lines and has been an issue for 20+ years. Failure at this point could lead to uncontrolled movement of the the rear suspension structure, the rear suspension members, wheels, and electronic sensors in the ABS causing loss of control and brake failure.

- Great Falls, VA, USA

problem #8

Jul 182022

E350

  • miles
Informed by local Mercedes dealer that the vehicle has severe rear brake line corrosion at 55K miles. Stated that the vehicle could suffer loss of braking power if the line(s) ruptured. This is unacceptable for a vehicle with this mileage. According to internet searches this is a widespread problem on 2014 models and earlier. Estimated cost to repair is $3600.

- Waterford, NY, USA

problem #7

Dec 012021

E350

  • miles
Brake booster starting to squel and squeak. Brakes Not feeling as firm Driver seat leather was torn at stitching.

- San Jose , CA, USA

problem #6

Dec 162021

E350

  • miles
brake line failed the hard line. lost my brakes. Mercedez Ralley Motors of Roslyn N.Y said that it was normal rust. there was no warning before the failure.

- New Hyde Park Ny, NY, USA

problem #5

Mar 172019

E350

  • 41,000 miles

A D V E R T I S E M E N T S

Distronic was in use, and failed. ABS locke up, causing me to skid into another vehicle.

- Hoover, AL, USA

problem #4

Aug 132018

E350

  • 36,000 miles
08/13/2018 when I was driving home today steering and brakes failed for like 1-2 minutes and I lost control.. then all the instrument warning lighting started to flash continually the temp gauge and RPM was in motion. SRS and all pre safe functions malfunctioned I can send an video of this if there is a way to upload. I think this is a serious safety issue what if I lost control on a highway, even for a split seconds. Why I bought a Mercedes I thought its a safer car well that's how they advertise it the best or nothing. But that couple of minutes was scary and shocking for

- Aurora, IL, USA

problem #3

Jun 012017

E350

  • 44,000 miles
Rotors fail after vehicle was idle for 12 weeks. Rust caused the rotors to make brakes pulsate. Dealer would not honor warranty, and maintained that the rotors were wear and tear items. But shop foreman informed me that this has been a problem for the last ten years and that they replace rotors of vehicles on the lot which have sat for several weeks in the winter. Upon my inspection of the rotors it was clear to see that the rust did indeed cause the surface of the rotors to score and deform.

- Kinderhook, NY, USA

problem #2

Nov 302014

E350 6-cyl

  • 1,203 miles
Was driving on 95N around 65 mph when vehicle loses power !!! I was in the left hand lane and traffic was flowing. It was by the grace of god that I made it to the right shoulder without causing a major accident for myself as well as for other vehicles. The engine light came on and the anti skid and anti skid off lights came on also it said consult owners manual. The vehicle is brand new and I never want to drive it again!!!. after I stopped I cut the vehicle off and restarted the vehicle to try and get home. On the way home it did it three more times. I could have killed myself and my daughter also who ever else was on the road. Once I got home I was really pissed after reading about all the other Benz owners that had the exact same problem. This is terrible for a brand new Mercedes !!!!!!

- Elkton, MD, USA

problem #1

Dec 022013

E350 6-cyl

  • 11,954 miles
The vehicle was serviced on 11/27/13. On 12/2/13 pulling away from a stop sign there was a loud pop and sudden drop to the car. After getting out of the vehicle and looking to see what had happened we noticed that the wheel had detached from the car. Police were notified right away because the vehicle was still in the road. Mercedes Benz embrace was notified directly afterwards and informed as to what had happened. The tow truck driver had to take a bolt out of each remaining wheel to re-attach the one that came off to load the vehicle onto the flat bed. Four lug bolts were missing. We did find a piece of a broken bolt laying on the ground not far from the car. The car was towed to the Mercedes Benz in memphis. I think this is a serious defect and should be thoroughly investigated to save the life of other drivers, had this happened to me on the interstate were I would have been driving at the speed of 70 mph all of us sitting in the car would have been dead and no one would have been able to find the cause. I hope you will take immediate action. Thanks

- Jonesboro, AR, USA

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