Where each one leads
Renault Mégane
- New Renault Mégane cars registered in Europe in 2022 average 119 g/km of CO₂ on the WLTP test, against 122 for the SEAT León in 2022.
- Measured by the cars' own fuel meters, the diesel Renault Mégane uses 5.4 l/100 km on the road, the SEAT León 5.6.
SEAT León
- Against cars of the same age, the SEAT León comes out better at its first MOT test (passes 3% more often than average) than the Renault Mégane (passes 16% less often than average).
- Fewer SEAT León cars in the Netherlands carry an illogical odometer record (3.3% against 4.2%).
- Measured by the cars' own fuel meters, the petrol SEAT León uses 6.5 l/100 km on the road, the Renault Mégane 7.3.
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
| Renault Mégane | SEAT León | |
|---|---|---|
| New cars registered in Europe | 2,659,600 (2010–2022) | 1,263,067 (2010–2022) |
| Licensed in the United Kingdom | 98,371 | 197,210 |
| On the road in the Netherlands | 95,123 | 62,541 |
| In traffic in Finland | 13,356 | 10,985 |
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
| Renault Mégane | SEAT León | |
|---|---|---|
| UK MOT first-time pass rate | 54% | 77% |
| … against cars of the same age | −16% | +3% |
| Illogical odometer records (NL) | 4.2% | 3.3% |
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
| Renault Mégane | SEAT León | |
|---|---|---|
| Real-world use in Europe, diesel | 5.4 l/100 km | 5.6 l/100 km |
| Real-world use in Europe, petrol | 7.3 l/100 km | 6.5 l/100 km |
| Real-world use in Europe, petrol hybrid | — | 6.6 l/100 km |
| Official CO₂ of new cars in Europe | 119 g/km | 122 g/km |
| Average power of new cars in Europe | 92 kW (123 hp) | 99 kW (132 hp) |
| Average mass in running order | 1,422 kg | 1,419 kg |
| Dutch list price when new (median) | €28,925 | €29,415 |
| Average odometer in Finland | 207,000 km | 166,000 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).