Where each one leads
Citroen C4
- Against cars of the same age, the Citroen C4 comes out better at its first MOT test (passes 13% less often than average) than the Renault Mégane (passes 16% less often than average).
- Fewer Citroen C4 cars in the Netherlands carry an illogical odometer record (2.9% against 4.2%).
- Measured by the cars' own fuel meters, the petrol Citroen C4 uses 6.6 l/100 km on the road, the Renault Mégane 7.3.
Renault Mégane
- New Renault Mégane cars registered in Europe in 2022 average 119 g/km of CO₂ on the WLTP test, against 126 for the Citroen C4 in 2022.
Too close to call: real-world fuel use in Europe, diesel (l/100 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
| Citroen C4 | Renault Mégane | |
|---|---|---|
| New cars registered in Europe | 933,943 (2010–2022) | 2,659,600 (2010–2022) |
| Licensed in the United Kingdom | 182,356 | 98,371 |
| On the road in the Netherlands | 15,421 | 95,123 |
| In traffic in Finland | 8,275 | 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
| Citroen C4 | Renault Mégane | |
|---|---|---|
| UK MOT first-time pass rate | 62% | 54% |
| … against cars of the same age | −13% | −16% |
| Illogical odometer records (NL) | 2.9% | 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
| Citroen C4 | Renault Mégane | |
|---|---|---|
| Real-world use in Europe, petrol | 6.6 l/100 km | 7.3 l/100 km |
| Real-world use in Europe, diesel | 5.5 l/100 km | 5.4 l/100 km |
| Official CO₂ of new cars in Europe | 126 g/km | 119 g/km |
| Average power of new cars in Europe | 93 kW (125 hp) | 92 kW (123 hp) |
| Average mass in running order | 1,384 kg | 1,422 kg |
| Dutch list price when new (median) | €26,299 | €28,925 |
| Average odometer in Finland | 180,000 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).