2015 Kia Sorento vs 2015 Mercedes-Benz GLK350
Complaints, recalls, TSBs, investigations and safety ratings side by side, from official federal data. Last verified Aug 8, 2026. Raw complaint counts are not adjusted for sales volume.
| Metric | 2015 Kia Sorento | 2015 Mercedes-Benz GLK350 |
|---|---|---|
| NHTSA complaints | 746 | 114 |
| Recall campaigns | 3 | 4 |
| Service bulletins (TSBs) | 202 | 56 |
| Investigations | 4 | 1 |
| Crash reports | 20 | 4 |
| Fire reports | 14 | 2 |
| NCAP overall rating | 5/5 | — |
| EPA MPG (combined) | 20–23 | 21–22 |
| Median reported incident mileage | 75,000 mi | 37,000 mi |
Reported problems side by side
| Component | Kia Sorento | Mercedes-Benz GLK350 |
|---|---|---|
| Engine | 359 | 3 |
| Air Bags | 29 | 84 |
| Structure | 99 | 2 |
| Exterior Lighting | 90 | 1 |
| Electrical System | 57 | 7 |
| Power Train | 42 | 5 |
| Steering | 33 | 5 |
| Fuel/propulsion System | 28 | 5 |
Symptoms owners describe
| Stalling | 88 | 6 |
| Check engine light | 74 | 0 |
| Clunking / rattling | 56 | 0 |
| Rust / corrosion | 47 | 0 |
| Loss of power | 38 | 0 |
| Vibration / shaking | 26 | 0 |
| Oil consumption | 18 | 0 |
| Overheating | 16 | 0 |
2015 Kia Sorento
2015 Mercedes-Benz GLK350
Compare all Kia Sorento vs Mercedes-Benz GLK350 years →
Method. Complaints are unique NHTSA reports. A vehicle that sold more units will naturally accumulate more complaints — use shares and read the underlying reports before drawing conclusions.