Where each one leads
Mercedes-Benz GLA
- Against cars of the same age, the Mercedes-Benz GLA comes out better at its first MOT test (passes 5% more often than average) than the Renault Mégane (passes 16% less often than average).
- Fewer Mercedes-Benz GLA cars in the Netherlands carry an illogical odometer record (2.3% against 4.2%).
Renault Mégane
- Measured by the cars' own fuel meters, the diesel Renault Mégane uses 5.4 l/100 km on the road, the Mercedes-Benz GLA 6.3.
- Measured by the cars' own fuel meters, the petrol Renault Mégane uses 7.3 l/100 km on the road, the Mercedes-Benz GLA 8.3.
Too close to call: official CO₂ of new cars in Europe (g/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
| Mercedes-Benz GLA | Renault Mégane | |
|---|---|---|
| New cars registered in Europe | 520,341 (2013–2022) | 2,659,600 (2010–2022) |
| Licensed in the United Kingdom | 112,994 | 98,371 |
| On the road in the Netherlands | 18,112 | 95,123 |
| In traffic in Finland | 2,939 | 13,356 |
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 GLA | Renault Mégane | |
|---|---|---|
| UK MOT first-time pass rate | 86% | 54% |
| … against cars of the same age | +5% | −16% |
| Illogical odometer records (NL) | 2.3% | 4.2% |
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).
Fuel, emissions and price
| Mercedes-Benz GLA | Renault Mégane | |
|---|---|---|
| Real-world use in Europe, diesel | 6.3 l/100 km | 5.4 l/100 km |
| Real-world use in Europe, petrol | 8.3 l/100 km | 7.3 l/100 km |
| Real-world use in Europe, petrol hybrid | 8.1 l/100 km | — |
| Official CO₂ of new cars in Europe | 118 g/km | 119 g/km |
| Average power of new cars in Europe | 119 kW (160 hp) | 92 kW (123 hp) |
| Average mass in running order | 1,634 kg | 1,422 kg |
| Dutch list price when new (median) | €52,233 | €28,925 |
| Average odometer in Finland | 116,000 km | 207,000 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).