Table of Contents
Engine and Powertrain
BMW’s latest M440i Grand Coupe is powered by the B58 Gen 3 inline‑six, delivering 392 hp and 540 Nm of torque. The new engine builds on the Gen 2 platform but adds a larger turbocharger, port injection alongside direct injection, and a 48‑volt mild‑hybrid starter‑generator integrated into the ZF HP60 gearbox. These changes give the car a slightly higher power output and a more responsive throttle, though the real‑world acceleration still feels a touch shy of the 4.6‑second 0‑100 km/h time reported for the older M440i. The mild‑hybrid system also provides a small electric boost during launch, reducing the need for a large clutch and improving low‑speed torque. The B58 Gen 3’s revised combustion chamber and improved airflow result in a cleaner exhaust note and better fuel efficiency compared to its predecessor.
Exterior Styling and Aerodynamics
The Grand Coupe’s front fascia has been refreshed with a more aggressive kidney grill, new LED daytime running lights, and a revised bumper that gives the car a sharper stance. The 19‑inch M‑Sport wheels, paired with 245 mm front and 255 mm rear tires, add a sporty look while maintaining grip. The rear lights feature a distinctive squiggly LED pattern, and the tailpipes are tucked into the bumper trim, producing a cleaner silhouette. The car’s carbon‑fiber trim accents and black window surrounds add a subtle premium touch. The overall silhouette is slightly wider than the M340i, giving the coupe a more muscular presence on the road while still preserving the sleek lines that define the M‑family.
Interior Comfort and Features
Inside, the Grand Coupe keeps the familiar M‑Sport layout but introduces a few refinements. The steering wheel feels slightly thinner than in previous models, and the flush door handles remain a point of contention for some drivers. However, the cabin benefits from a more spacious rear seat, thanks to the coupe’s slightly wider body, and the use of high‑quality materials throughout. The mild‑hybrid system also contributes to a quieter cabin at low speeds. The infotainment system is updated with a larger touchscreen, improved connectivity, and a more intuitive menu structure, while the climate control offers dual‑zone settings and a quiet cabin mode that further enhances the driving experience.
Driving Dynamics and Performance
The ZF HP60 gearbox delivers tight, snappy shifts, and the mild‑hybrid starter‑generator provides a smooth launch. The car’s launch control and traction control systems work well, though the sport mode can be frustrating: the gearbox does not automatically switch to sport when the driver selects the mode, requiring a manual reset each time. Despite this quirk, the car feels balanced, with a noticeable difference between drive and sport modes. The top speed is electronically limited to 247 km/h, slightly below the 250 km/h limit seen on earlier M‑models, but still sufficient for most daily driving scenarios. On the highway, the car’s adaptive dampers lower the ride height by 10 mm, improving cornering stability while maintaining a comfortable ride over uneven surfaces.
Sound, Tuning, and Future Potential
One of the most noticeable improvements is the exhaust sound. The new system blends real exhaust notes with a subtle simulated layer, creating a richer, less intrusive tone than the previous generation. While the sound is still muffled, it feels more authentic and is a step forward compared to the loud, artificial noises that plagued earlier M‑cars. Tuning enthusiasts will appreciate the engine’s potential: a race chip can push the B58 Gen 3 to around 500 hp, and the platform’s architecture suggests that a full stage‑two tune is feasible. The car’s ECU also allows for a mild‑hybrid boost that can be engaged in sport mode, giving drivers an extra 10–15 hp for spirited driving.
Overall, the M440i Grand Coupe offers a compelling mix of performance, styling, and refinement. The upgraded engine and mild‑hybrid system give it a modern feel, while the exterior and interior updates keep it fresh. Minor issues—such as the sport mode glitch and the slightly lower top speed—are outweighed by the car’s strong driving dynamics and the promise of future tuning options. For drivers who value a blend of daily usability and track‑ready performance, the Grand Coupe remains a top choice in the M‑family lineup.