Where each one leads
Audi R8
- On Canada's official test the most frugal 2023 Audi R8 uses 13.7 l/100 km, the 2025 Porsche 911 GT3 RS 15.1.
- New Audi R8 cars registered in Europe in 2022 average 296 g/km of CO₂ on the WLTP test, against 305 for the Porsche 911 GT3 RS in 2022.
- Measured by the cars' own fuel meters, the petrol Audi R8 uses 17.5 l/100 km on the road, the Porsche 911 GT3 RS 19.5.
Porsche 911 GT3 RS
Ahead on none of the like-for-like measures.
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 R8 | Porsche 911 GT3 RS | |
|---|---|---|
| Model years in the US safety record | 2006–2025 | 2008–2024 |
| New cars registered in Europe | 6,301 (2010–2022) | 5,179 (2010–2022) |
| Licensed in the United Kingdom | 3,126 | — |
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 R8 | Porsche 911 GT3 RS | |
|---|---|---|
| UK MOT first-time pass rate | 90% | — |
| … against cars of the same age | +30% | — |
| New York safety inspections failed | 0.4% | — |
| … against cars of the same year | −78% | — |
| US owner complaints | 14 | 1 |
| Most complaints about | Suspension | Engine and engine cooling |
| Model year with most complaints | 2009 (6) | 2011 (1) |
| US recall campaigns | 2 | 7 |
| Manufacturer service bulletins | 5,671 | 1,433 |
| NHTSA defect investigations | — | 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
| Audi R8 | Porsche 911 GT3 RS | |
|---|---|---|
| Official combined fuel use, Canada | 13.7 l/100 km (2023) | 15.1 l/100 km (2025) |
| Real-world use in Europe, petrol | 17.5 l/100 km | 19.5 l/100 km |
| Official CO₂ of new cars in Europe | 296 g/km | 305 g/km |
| Average power of new cars in Europe | 436 kW (585 hp) | 386 kW (518 hp) |
| Average mass in running order | 1,670 kg | 1,525 kg |
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).