BMW M340i G20 or BMW M2 G87? 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
| BMW M340i G20 | BMW M2 G87 | |
|---|---|---|
| Years | 2019– | 2023– |
| Engine | 3.0 turbo inline-six B58 | 3.0 S58 twin-turbo inline-six |
| Stock power | 374 PS / 500 Nm | 453 hp (2023–24) / 473 hp (2025+) (US) |
Power by stage
| BMW M340i G20 | BMW M2 G87 | |
|---|---|---|
| Stock | 374 PS | 453 hp |
| Stage 1 | 400–460 PS / hp | ≈552–592 hp |
| Stage 2 | 460–500 hp | ≈621–718 hp |
| Stage 3 | 510–650 PS / hp | 790–959 whp |
| Stage 4 | 700–800+ whp | 900–1,000+ whp |
Figures are the tuners' own claims from each guide, on the fuel each tuner states.
Typical parts cost
| BMW M340i G20 | BMW M2 G87 | |
|---|---|---|
| Stage 1 | bootmod3 $595 plus a bench unlock ($215 mail-in, or $850–$1,500 FEMTO on 06/2020+ cars); BR-Performance €890; G-Power €1,995 fitted; plug-in boxes $599 (JB4) or €609 (RaceChip); xHP gearbox software from $299.99. | $595–$899 (bootmod3, CarBahn, JB4); MHD licence €499; G-Power €2,495 fitted; AC Schnitzer €5,990. |
| Stage 2 | downpipe $479.99 (VRSF) to $1,424.99 (Active Autowerke); heat exchanger $699 (CSF) or $749.99 (Mishimoto); Eventuri intake $1,495; AWE exhaust from $1,755. | the same MHD licence (€499); Fabspeed catted downpipes $3,626. |
| Stage 3 | — | turbos $3,900–$7,495 (CTS, Vargas, Pure). |
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 BMW M340i G20 reaches 700–800+ whp and the BMW M2 G87 900–1,000+ whp.
Read the full guides
- The BMW M340i G20 guide
- The BMW M2 G87 guide
- Compare other cars in the compare tool
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