Where each one leads
Audi A3
- Against cars of the same age, the Audi A3 comes out better at its first MOT test (passes 6% more often than average) than the Peugeot 508 (passes 3% less often than average).
- Measured by the cars' own fuel meters, the petrol Audi A3 uses 6.7 l/100 km on the road, the Peugeot 508 7.4.
Peugeot 508
- New Peugeot 508 cars registered in Europe in 2022 average 90 g/km of CO₂ on the WLTP test, against 105 for the Audi A3 in 2022.
Too close to call: dutch odometer readings judged illogical; 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
| Audi A3 | Peugeot 508 | |
|---|---|---|
| Model years in the US safety record | 1997–2026 | — |
| New cars registered in Europe | 1,602,788 (2010–2022) | 454,526 (2010–2022) |
| Licensed in the United Kingdom | 452,615 | 18,325 |
| On the road in the Netherlands | 86,151 | 9,356 |
| In traffic in Finland | 22,290 | 3,424 |
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
| Audi A3 | Peugeot 508 | |
|---|---|---|
| UK MOT first-time pass rate | 75% | 70% |
| … against cars of the same age | +6% | −3% |
| New York safety inspections failed | 1.3% | — |
| … against cars of the same year | −21% | — |
| Illogical odometer records (NL) | 3.2% | 3.1% |
| US owner complaints | 734 | — |
| Most complaints about | Air bags | — |
| Model year with most complaints | 2006 (123) | — |
| US recall campaigns | 20 | — |
| Manufacturer service bulletins | 10,205 | — |
| NHTSA defect investigations | 16 | — |
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).
Safety
| Audi A3 | Peugeot 508 | |
|---|---|---|
| NHTSA overall rating | 5★ (2020) | — |
NHTSA New Car Assessment Program, most recent rated model year (public domain).
Fuel, emissions and price
| Audi A3 | Peugeot 508 | |
|---|---|---|
| Official combined fuel use, Canada | 8.5 l/100 km (2026) | — |
| Real-world use in Europe, diesel | 5.6 l/100 km | 5.5 l/100 km |
| Real-world use in Europe, petrol hybrid | 6.6 l/100 km | — |
| Real-world use in Europe, petrol | 6.7 l/100 km | 7.4 l/100 km |
| Official CO₂ of new cars in Europe | 105 g/km | 90 g/km |
| Average power of new cars in Europe | 102 kW (137 hp) | 112 kW (150 hp) |
| Average mass in running order | 1,464 kg | 1,631 kg |
| Dutch list price when new (median) | €38,051 | €38,400 |
| Average odometer in Finland | 186,000 km | 205,000 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).