Audi RS5 B9 or BMW M3 / M4 G80 / G82? They're rivals, so owners often weigh one against the other. Here's how far each one goes, using the makers' and tuners' own figures from our two guides.
At a glance
| Audi RS5 B9 | BMW M3 / M4 G80 / G82 | |
|---|---|---|
| Years | 2018–2024 (facelift 2019) | 2021– |
| Engine | 2.9 TFSI EA839 twin-turbo V6 | 3.0 S58 twin-turbo inline-six |
| Stock power | 450 PS / 600 Nm (US 444 hp) | 473 hp (Competition: 503 hp) |
Power by stage
| Audi RS5 B9 | BMW M3 / M4 G80 / G82 | |
|---|---|---|
| Stock | 450 PS | 503 hp |
| Stage 1 | 500–525 hp | ≈588–659 hp |
| Stage 2 | 525–605 hp | ≈604–669 hp |
| Stage 3 | 590–680 hp | 750+ hp |
| Stage 4 | 710–740 hp | 900+ hp |
Figures are the tuners' own claims from each guide, on the fuel each tuner states.
Typical parts cost
| Audi RS5 B9 | BMW M3 / M4 G80 / G82 | |
|---|---|---|
| Stage 1 | APR Stage 1 $899.95, or $1,799.95 as APR Plus with a limited powertrain warranty. | bootmod3 $595 (licence and one map). |
| Stage 2 | APR high-pressure fuel pump (2.9T and 3.0T) $1,499.95. | the same bootmod3 licence ($595). |
| Stage 3 | — | — |
List prices from the guides, before shipping, import tax and fitting. "—" means that guide has no cost line for the stage.
Where each one ends up
At Stage 4 the Audi RS5 B9 reaches 710–740 hp and the BMW M3 / M4 G80 / G82 900+ hp.