Where each one leads
Mercedes-Benz GLE
- New Mercedes-Benz GLE cars registered in Europe in 2022 average 105 g/km of CO₂ on the WLTP test, against 302 for the Porsche Cayenne GTS in 2022.
Porsche Cayenne GTS
- On Canada's official test the most frugal 2025 Porsche Cayenne GTS uses 12.7 l/100 km, the 2018 Mercedes-Benz GLE 13.5.
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
| Mercedes-Benz GLE | Porsche Cayenne GTS | |
|---|---|---|
| Model years in the US safety record | 2016–2020 | 2006–2024 |
| New cars registered in Europe | 261,661 (2015–2022) | 7,596 (2010–2022) |
| Licensed in the United Kingdom | 39,514 | — |
| On the road in the Netherlands | 9,745 | — |
| In traffic in Finland | 1,015 | — |
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
| Mercedes-Benz GLE | Porsche Cayenne GTS | |
|---|---|---|
| UK MOT first-time pass rate | 88% | — |
| … against cars of the same age | +6% | — |
| Illogical odometer records (NL) | 4.0% | — |
| US owner complaints | 8 | 3 |
| Most complaints about | Unknown or other | Power train |
| Model year with most complaints | 2016 (4) | 2008 (3) |
| US recall campaigns | — | 3 |
| Manufacturer service bulletins | 336 | 2,052 |
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
| Mercedes-Benz GLE | Porsche Cayenne GTS | |
|---|---|---|
| NHTSA overall rating | 5★ (2026) | — |
NHTSA New Car Assessment Program, most recent rated model year (public domain).
Fuel, emissions and price
| Mercedes-Benz GLE | Porsche Cayenne GTS | |
|---|---|---|
| Official combined fuel use, Canada | 13.5 l/100 km (2018) | 12.7 l/100 km (2025) |
| Real-world use in Europe, diesel | 9.8 l/100 km | — |
| Real-world use in Europe, diesel hybrid | 9.0 l/100 km | — |
| Real-world use in Europe, petrol hybrid | 13.5 l/100 km | — |
| Real-world use in Europe, petrol | — | 14.2 l/100 km |
| Official CO₂ of new cars in Europe | 105 g/km | 302 g/km |
| Average power of new cars in Europe | 191 kW (256 hp) | 338 kW (453 hp) |
| Average mass in running order | 2,514 kg | 2,253 kg |
| Dutch list price when new (median) | €121,947 | — |
| Average odometer in Finland | 113,000 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).