AI Damage2014 Mercedes-Benz GLK350: common problems
Owners of the 2014 Mercedes-Benz GLK350 filed 104 complaints with NHTSA, most often about air bags and service brakes. Details by component below, with sources.
Key figures
- Owner complaints
- 104
- involving a crash
- 4
What fails most often
- 1 Air bags 60% of all complaints
- 2 Service brakes 6% of all complaints
- 3 Structure 5% of all complaints
- 4 Electrical system 4% of all complaints
- 5 Engine 4% of all complaints
- 6 Fuel/propulsion system 4% of all complaints
- 7 Fuel system 4% of all complaints
- 8 Steering 4% of all complaints
- Air bags: 62 complaints (60% of all), 1 of them with a crash reported by the owner.
- Service brakes: 6 complaints (6% of all), 1 of them with a crash reported by the owner.
- Structure: 5 complaints (5% of all), 1 of them with a crash reported by the owner.
- Electrical system: 4 complaints (4% of all), 1 of them with a crash reported by the owner.
- Engine: 4 complaints (4% of all).
Engines and transmissions
US-market versions per EPA. On the right: how many NHTSA complaints name this engine or transmission type.
- 3.5 L · petrol · 6 cyl
- automatic, 7-speed
Drive: RWD, 4WD
Symptoms owners describe
How many of the 104 NHTSA complaints mention each symptom (automatic count from complaint text; one complaint can mention several).
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Air bags | 62 | 1 | 0 |
| Service brakes | 6 | 1 | 0 |
| Structure | 5 | 1 | 0 |
| Electrical system | 4 | 1 | 0 |
| Engine | 4 | 0 | 0 |
| Fuel/propulsion system | 4 | 0 | 0 |
| Fuel system | 4 | 0 | 0 |
| Steering | 4 | 0 | 0 |
| Visibility | 4 | 0 | 0 |
| Powertrain | 3 | 0 | 0 |
| Seats | 3 | 0 | 0 |
| Suspension | 3 | 0 | 0 |
| Wheels | 3 | 0 | 0 |
| Seat belts | 2 | 0 | 0 |
What owners report
Short excerpts of NHTSA complaints in the original wording. These are owner statements not verified by NHTSA; personal data removed.
I was driving behind a lady and when she stopped I went to put my feet on the brakes and the brakes went to the floor and my car hit her. I had my car repaired of course and paid my deductible. My car was driving pretty regular after being repaired. Then in august 2020 the same thing happened again.
The contact stated that a warning light indicated a danger of the vehicle rolling over. The contact applied the accelerator pedal while in reverse, but it did not respond and the warning light flashed. Suddenly, the vehicle reversed and crashed into the garage and a pole. The vehicle was stuck sideways.
Tl* the contact owns a 2014 mercedes benz glk350. The contact stated that while parking, the vehicle suddenly accelerated without any warning and crashed into another vehicle. The contact mentioned that she engaged the brakes but it failed to stop the vehicle.
The contact stated that after reversing out of the garage, there was a large rust puddle near the rear passengerâs side of the vehicle. While the contact's wife was driving at an undisclosed speed, the vehicle made an abnormally loud clunking sound.
The check engine, TPMS, and several other unknown warning lights were illuminated. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was not made aware of the failure. The failure mileage was approximately 100,000.
The vehicle was taken to the dealer where it was diagnosed with an internal fault in the driver seat back heater; however the vehicle was not repaired. The manufacturer was notified of the issue. The approximate failure mileage was 120,000.
-The entire electrical system failed and the power steering, SRS, and ABS systems malfunctioned. Yes, itâs available for inspection. 2. How was your safety or the safety of others put at risk?
Thinking it was from a truck in front of me, I passed the truck, cracked my passenger window and continued the short distance to my office. After work, when I returned to my car, I noted a hole burned through my driver's side leather seat.
When owners complained
NHTSA complaints by filing year. The peak shows at what age the problems show up most.
Comparison
By complaint count this model year ranks 3,479 of 36,656 model years in the NHTSA data (top 9% most complained about).
On average one model year of the GLK350 has 100 complaints (9 years in the data). This year has 104, about average.
What to check before buying
- Air bags. Check the SRS light, stored codes and airbag/curtain status after any impact.
- Service brakes. Pedal feel, ABS operation, leaks, discs and hoses.
- Structure. Rails, pillars, panel gaps, signs of pulling or welding.
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
Other years of this model
Questions and answers
What are the most common problems with the 2014 Mercedes-Benz GLK350?
Owner complaints to NHTSA most often mention: air bags, service brakes, structure. Total complaints: 104. The most frequent symptoms in complaint texts: warning lights, check engine (13%), windows, sunroof (5%), fuel system, fuel smell (4%).
How many service bulletins (TSB) were issued for the 2014 Mercedes-Benz GLK350?
NHTSA lists 0 manufacturer service bulletins for this year. A bulletin tells dealers how to diagnose or fix a known issue; it is not a recall.
Should I buy a 2014 Mercedes-Benz GLK350 from a US auction?
Owner complaints describe defects, not crash damage. Before bidding, check the components listed above and review the lot photos: VinWind builds a report of visible and hidden damage by VIN.
Other 2014 models
Read also
Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-05.