Where each one leads
Audi Q3
- Against cars of the same age, the Audi Q3 comes out better at its first MOT test (passes 7% more often than average) than the BMW X4 (passes 4% more often than average).
- Against cars of the same year, the Audi Q3 comes out better in New York safety inspections (fails 48% less often than average) than the BMW X4 (fails 36% less often than average).
- On Canada's official test the most frugal 2026 Audi Q3 uses 9.6 l/100 km, the 2025 BMW X4 9.9.
- New Audi Q3 cars registered in Europe in 2022 average 123 g/km of CO₂ on the WLTP test, against 170 for the BMW X4 in 2022.
- Measured by the cars' own fuel meters, the diesel Audi Q3 uses 6.7 l/100 km on the road, the BMW X4 7.6.
- Measured by the cars' own fuel meters, the petrol Audi Q3 uses 8.2 l/100 km on the road, the BMW X4 10.8.
- Measured by the cars' own fuel meters, the petrol hybrid Audi Q3 uses 7.8 l/100 km on the road, the BMW X4 9.6.
BMW X4
Ahead on none of the like-for-like measures.
Too close to call: dutch odometer readings judged illogical.
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 Q3 | BMW X4 | |
|---|---|---|
| Model years in the US safety record | 2008–2026 | 2014–2026 |
| New cars registered in Europe | 837,215 (2011–2022) | 156,698 (2014–2022) |
| Licensed in the United Kingdom | 173,665 | 20,540 |
| On the road in the Netherlands | 31,753 | 3,470 |
| In traffic in Finland | 3,944 | 982 |
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 Q3 | BMW X4 | |
|---|---|---|
| UK MOT first-time pass rate | 84% | 85% |
| … against cars of the same age | +7% | +4% |
| New York safety inspections failed | 0.5% | 0.7% |
| … against cars of the same year | −48% | −36% |
| Illogical odometer records (NL) | 2.7% | 2.6% |
| US owner complaints | 242 | 93 |
| Most complaints about | Electrical system | Electrical system |
| Model year with most complaints | 2020 (66) | 2015 (18) |
| US recall campaigns | 19 | 29 |
| Manufacturer service bulletins | 6,488 | 1,435 |
| NHTSA defect investigations | — | 5 |
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 Q3 | BMW X4 | |
|---|---|---|
| NHTSA overall rating | 5★ (2025) | — |
NHTSA New Car Assessment Program, most recent rated model year (public domain).
Fuel, emissions and price
| Audi Q3 | BMW X4 | |
|---|---|---|
| Official combined fuel use, Canada | 9.6 l/100 km (2026) | 9.9 l/100 km (2025) |
| Real-world use in Europe, diesel | 6.7 l/100 km | 7.6 l/100 km |
| Real-world use in Europe, petrol | 8.2 l/100 km | 10.8 l/100 km |
| Real-world use in Europe, petrol hybrid | 7.8 l/100 km | 9.6 l/100 km |
| Real-world use in Europe, diesel hybrid | — | 7.5 l/100 km |
| Official CO₂ of new cars in Europe | 123 g/km | 170 g/km |
| Average power of new cars in Europe | 115 kW (154 hp) | 181 kW (242 hp) |
| Average mass in running order | 1,691 kg | 1,952 kg |
| Dutch list price when new (median) | €58,246 | €89,080 |
| Average odometer in Finland | 144,000 km | 190,000 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).