Where each one leads
BMW 135i
Ahead on none of the like-for-like measures.
Mazda MX-5
- On Canada's official test the most frugal 2026 Mazda MX-5 uses 8.0 l/100 km, the 2013 BMW 135i 10.3.
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 135i | Mazda MX-5 | |
|---|---|---|
| Model years in the US safety record | 2007–2013 | 2006–2026 |
| New cars registered in Europe | — | 112,227 (2010–2022) |
| Licensed in the United Kingdom | — | 79,525 |
| On the road in the Netherlands | — | 12,970 |
| In traffic in Finland | — | 645 |
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 135i | Mazda MX-5 | |
|---|---|---|
| UK MOT first-time pass rate | — | 74% |
| … against cars of the same age | — | +14% |
| New York safety inspections failed | — | 0.8% |
| … against cars of the same year | — | −51% |
| Illogical odometer records (NL) | — | 9.6% |
| US owner complaints | 154 | 155 |
| Most complaints about | Air bags | Power train |
| Model year with most complaints | 2008 (51) | 2016 (34) |
| US recall campaigns | 6 | 6 |
| Manufacturer service bulletins | 626 | 3,927 |
| NHTSA defect investigations | 6 | — |
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 135i | Mazda MX-5 | |
|---|---|---|
| Official combined fuel use, Canada | 10.3 l/100 km (2013) | 8.0 l/100 km (2026) |
| Real-world use in Europe, petrol | — | 6.8 l/100 km |
| Official CO₂ of new cars in Europe | — | 150 g/km |
| Average power of new cars in Europe | — | 121 kW (162 hp) |
| Average mass in running order | — | 1,106 kg |
| Dutch list price when new (median) | — | €34,590 |
| Average odometer in Finland | — | 137,000 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).