Where each one leads
Kia Sorento
- New Kia Sorento cars registered in Europe in 2022 average 109 g/km of CO₂ on the WLTP test, against 129 for the Mercedes-Benz GLC in 2022.
- Measured by the cars' own fuel meters, the petrol hybrid Kia Sorento uses 7.9 l/100 km on the road, the Mercedes-Benz GLC 9.5.
Mercedes-Benz GLC
- Against cars of the same age, the Mercedes-Benz GLC comes out better at its first MOT test (passes 5% more often than average) than the Kia Sorento (passes 3% less often than average).
- Fewer Mercedes-Benz GLC cars in the Netherlands carry an illogical odometer record (2.4% against 3.1%).
Too close to call: NHTSA overall safety rating; real-world fuel use in Europe, diesel (l/100 km).
Only measures that do not depend on how many cars were sold: pass and failure rates against cars of the same age, ratings, fuel use and CO₂. How we compare
At a glance
| Kia Sorento | Mercedes-Benz GLC | |
|---|---|---|
| Model years in the US safety record | 2003–2026 | 2015–2023 |
| New cars registered in Europe | 144,558 (2010–2022) | 640,588 (2015–2022) |
| Licensed in the United Kingdom | 40,612 | 98,346 |
| On the road in the Netherlands | 6,277 | 25,833 |
| In traffic in Finland | 3,767 | 12,123 |
EEA new-car registrations (CC BY 4.0) · DVLA licensed vehicles (OGL v3.0) · RDW (CC0) · Traficom (CC BY 4.0) · generations: Wikidata (CC0).
Reliability and problems
| Kia Sorento | Mercedes-Benz GLC | |
|---|---|---|
| UK MOT first-time pass rate | 69% | 88% |
| … against cars of the same age | −3% | +5% |
| New York safety inspections failed | 2.0% | — |
| … against cars of the same year | +26% | — |
| Illogical odometer records (NL) | 3.1% | 2.4% |
| US owner complaints | 10,216 | 24 |
| Most complaints about | Engine | Service brakes |
| Model year with most complaints | 2011 (1,520) | 2017 (13) |
| US recall campaigns | 40 | — |
| Manufacturer service bulletins | 2,209 | 273 |
| NHTSA defect investigations | 62 | 2 |
Complaint, recall and bulletin counts grow with the number of cars sold and are not adjusted for it. UK MOT: DVSA anonymised MOT results (OGL v3.0); New York: DMV inspections; complaints, recalls, bulletins and investigations: NHTSA (public domain); odometer: RDW (CC0).
Safety
| Kia Sorento | Mercedes-Benz GLC | |
|---|---|---|
| NHTSA overall rating | 5★ (2027) | 5★ (2021) |
NHTSA New Car Assessment Program, most recent rated model year (public domain).
Fuel, emissions and price
| Kia Sorento | Mercedes-Benz GLC | |
|---|---|---|
| Official combined fuel use, Canada | 9.4 l/100 km (2026) | — |
| Real-world use in Europe, diesel | 7.7 l/100 km | 7.6 l/100 km |
| Real-world use in Europe, petrol hybrid | 7.9 l/100 km | 9.5 l/100 km |
| Real-world use in Europe, diesel hybrid | — | 6.6 l/100 km |
| Real-world use in Europe, petrol | — | 13.1 l/100 km |
| Official CO₂ of new cars in Europe | 109 g/km | 129 g/km |
| Average power of new cars in Europe | 136 kW (182 hp) | 156 kW (209 hp) |
| Average mass in running order | 1,950 kg | 1,960 kg |
| Dutch list price when new (median) | €55,960 | €77,065 |
| Average odometer in Finland | 196,000 km | 123,000 km |
Canada: NRCan Fuel Consumption Ratings, most frugal version of the latest year (OGL Canada). Europe: EEA monitoring of new-car CO₂ and on-board fuel meters (OBFCM), CC BY 4.0. Price: RDW catalogue price (CC0). Finland: Traficom (CC BY 4.0).