Overview
- The revised 3.0‑liter straight‑six adds about 18 hp and 40 Nm to roughly 386–392 hp and 540 Nm, aided by a 48‑volt mild‑hybrid system.
- BMW reports lower WLTP numbers, with the M240i xDrive now at 8.0 l/100 km and 183 g/km versus roughly 8.7–8.8 l/100 km and 199–200 g/km.
- Claimed 0–62 mph times drop by 0.1 second for the M340i and M440i, while the M240i remains listed at 4.3 seconds.
- European production of the updated M240i, M340i and M440i starts in November 2025, with pricing and order‑book timing still to come.
- The update also adds small equipment changes such as optional Adaptive LED headlights for 4 Series, laser rear lights for i4, Cape York Green for the 2 Series Gran Coupé, and a B‑pillar coat hook for the 5 Series.