Where each one leads
BMW M440I
- On Canada's official test the most frugal 2026 BMW M440I uses 8.1 l/100 km, the 2025 Porsche 718 Cayman 10.0.
Porsche 718 Cayman
Ahead on none of the like-for-like measures.
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
| BMW M440I | Porsche 718 Cayman | |
|---|---|---|
| Model years in the US safety record | 2021–2025 | 2016–2025 |
| New cars registered in Europe | — | 6,177 (2016–2022) |
| On the road in the Netherlands | — | 381 |
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
| BMW M440I | Porsche 718 Cayman | |
|---|---|---|
| New York safety inspections failed | — | 0.2% |
| … against cars of the same year | — | −84% |
| Illogical odometer records (NL) | — | 2.3% |
| US owner complaints | 11 | 19 |
| Most complaints about | Unknown or other | Engine |
| Model year with most complaints | 2021 (6) | 2016 (7) |
| US recall campaigns | 7 | 7 |
| Manufacturer service bulletins | 198 | 1,792 |
| NHTSA defect investigations | 2 | 3 |
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).
Fuel, emissions and price
| BMW M440I | Porsche 718 Cayman | |
|---|---|---|
| Official combined fuel use, Canada | 8.1 l/100 km (2026) | 10.0 l/100 km (2025) |
| Real-world use in Europe, petrol | — | 10.5 l/100 km |
| Official CO₂ of new cars in Europe | — | 204 g/km |
| Average power of new cars in Europe | — | 220 kW (296 hp) |
| Average mass in running order | — | 1,441 kg |
| Dutch list price when new (median) | — | €140,653 |
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).