What breaks most · 2006 to 2015 model years
Mercedes-Benz GLK350 problems by year
Owners have filed 904 safety complaints with NHTSA about the Mercedes-Benz GLK350 across model years 2006 to 2015. Three years stand out: 2010 for air bags complaints, 2012 for air bags complaints and 2013 for air bags complaints. The quietest years are 2008, 2006 and 2007.
- Years to check closely: 2010, 2012, 2013
- Fewest complaints: 2008, 2006, 2007
- Complaints on file
- 9042006 to 2015, all trims
- Worst year
- 2010241 complaints
- Crashes reported
- 349 fires · 22 injuries · 2 deaths
- Typical failure mileage
- 55kMedian where owners gave mileage
- Recall campaigns
- 28Across the years shown
Complaints by model year
Raw filings with NHTSA, not adjusted for how many were sold.
| Model year | Complaints | Crashes | Recalls | Most-reported component |
|---|---|---|---|---|
| 2 | 0 | 0 | Electrical system (1) | |
| 5 | 0 | 0 | Visibility (1) | |
| 1 | 0 | 0 | Equipment and infotainment (1) | |
| 241 | 12 | 5 | Air bags (149) | |
| 133 | 4 | 4 | Air bags (92) | |
| 167 | 5 | 4 | Air bags (132) | |
| 137 | 5 | 6 | Air bags (100) | |
| 104 | 4 | 5 | Air bags (62) | |
| 114 | 4 | 4 | Air bags (84) |
What fails on the 2010 Mercedes-Benz GLK350
| Component | Share of complaints | Filings | Crashes | Parts for this job |
|---|---|---|---|---|
| Air bags | 62% |
149 | 3 | Check recalls for air bags on NHTSA.gov |
| Fuel systemFuel pumps and injectors | 11% |
26 | 1 | Shop fuel system parts for the 2010 Mercedes-Benz GLK350 |
| SuspensionStruts, springs and control arms | 6% |
14 | 0 | Shop suspension parts for the 2010 Mercedes-Benz GLK350 |
| Unknown or other | 5% |
12 | 1 | — |
| Body and structureDoors, latches and body hardware | 5% |
11 | 3 | Shop body and structure parts for the 2010 Mercedes-Benz GLK350 |
| Speed control and throttleThrottle and pedal sensors | 4% |
9 | 7 | Shop speed control and throttle parts for the 2010 Mercedes-Benz GLK350 |
| Electrical systemAlternators, starters and ignition | 3% |
8 | 1 | Shop electrical system parts for the 2010 Mercedes-Benz GLK350 |
| SteeringPower steering pumps, racks and hoses | 3% |
8 | 0 | Shop steering parts for the 2010 Mercedes-Benz GLK350 |
One complaint can name more than one component, so shares add to more than 100%. "Unknown or other" is NHTSA's uncategorized bucket and is shown but never ranked.
In owners' words
Complaint narratives as filed with NHTSA, trimmed for length.
-
Gas leak when filling tank with fuel. Last year I had fuel pump replacement Smells like gas in my garage and I noticed leak This is not good
-
My mercedes GLK 350 4matic has a strong gas smell every time I fill up and I am afraid to park in my garage because of the very strong gas smell, and I am afraid of a fire.
-
Dealer reported to me that the brake lines are rusted. Dealer reported the lines are painted rather than coated as they were in the past. Vehicle is less than 10 years old so brake line rusting seems unusual.
How to read this page
Every figure comes from the National Highway Traffic Safety Administration's public complaint database, which holds every safety-related defect complaint filed by owners since 1995. We refresh it monthly and count each complaint once per component it names. Data through September 6, 2026.
NHTSA only accepts safety-related complaints. Rattles, paint, infotainment bugs and other annoyances are under-reported here, so this page is a map of what fails in ways owners consider dangerous, not a full reliability score.
Counts are raw. Use the year-over-year shape and the component mix, not the absolute numbers. Where a component maps to parts we stock, the row links to that category filtered to the year you are viewing. Air bag and seat belt complaints link to the recall checker instead, because those repairs are almost always covered.
Common questions
Which Mercedes-Benz GLK350 years have the most problems?
By NHTSA complaint volume, 2010, 2012, 2013 carry the most filings on the Mercedes-Benz GLK350. The 2010 alone has 241 complaints, led by air bags.
What is the most common Mercedes-Benz GLK350 problem?
On the 2010 model year, the most-reported component is air bags with 149 complaints. The table above lists the top components for every year.
At what mileage do Mercedes-Benz GLK350 problems start?
The median mileage at failure across all Mercedes-Benz GLK350 complaints that include mileage is about 55,000 miles. Older model years skew higher; the per-year figure is in the "at a glance" card.
Are these complaints verified?
No. NHTSA publishes complaints as submitted and does not investigate individual filings. Patterns across hundreds of complaints are meaningful; a single one is not.