Table of Contents
Open‑Top Thrill Meets M‑Series Muscle
When most people think of a convertible, the first image that comes to mind is a carefree, sun‑kissed ride that prioritises style over substance. The BMW M440i Convertible flips that expectation on its head. Built on the same platform as the M340i, it keeps the 3.0‑litre B58 turbocharged straight‑six that churns out 369 bhp and 500 Nm of torque, but it adds a rear‑biased all‑wheel‑drive system that gives the car a more planted feel without sacrificing the open‑top experience.
Power, Performance, and the Subtle Trade‑Off
The engine’s output remains unchanged from the coupe, so the 0‑100 km/h sprint takes just a half‑second longer. That tiny price is more than offset by the way the power is delivered: the eight‑speed Steptronic gearbox keeps the turbo lag almost invisible, and the all‑wheel‑drive distribution ensures that the 440i can launch like a rocket while still feeling balanced on the road. In sport or sport‑plus mode, the exhaust transforms from a gentle hum into a series of satisfying crackles and pops that make the open‑top feel even more exhilarating.
Under the hood, the B58 engine is tuned for low‑end torque, allowing the car to feel responsive even at lower RPMs. The M‑specific tuning also means that the power curve is smoother, giving drivers a sense of confidence when they push the accelerator. The result is a vehicle that feels both powerful and controlled, a rare combination in the convertible segment.
Handling Dynamics and the Convertible Challenge
BMW has tuned the suspension to be a touch softer than the M340i’s, prioritising everyday comfort while still retaining the sharpness expected from an M car. The result is a ride that absorbs bumps and undulations with ease, yet the car’s 50/50 weight distribution and rear‑bias give it a slight edge in agility. The steering is heavy‑handed and responsive, offering instant feedback that makes the driver feel in sync with the road.
Because the roof is a moving part, the car is naturally heavier than its coupe counterpart. This added weight can lead to a modest amount of body roll when the roof is down, especially on aggressive corners. However, the chassis tuning mitigates this effect, and the overall handling remains engaging. The M brakes provide excellent bite and progression, allowing the driver to stop the car on a dime if needed.
Interior Comfort Meets M‑Series Touches
Inside, the cabin mirrors the M340i’s minimalist yet functional layout. A single, wide dual‑screen display houses the virtual cockpit and head‑up display, while the infotainment system runs the latest BMW software with wireless Android Auto and Apple CarPlay. Physical buttons remain for key functions, keeping the cockpit from feeling cluttered. M‑specific touches—such as the red strip on the steering wheel, the carbon‑steel inserts, and the M‑branded brakes—add a sense of exclusivity without overwhelming the space.
The Harman Kardon surround‑sound system delivers a crisp audio experience even with the top down. Seat adjustments are intuitive, and the driver’s seat memory function ensures that the car remembers your preferred position with a simple click. While the rear seats are a bit tight, they are still usable for short trips or for children, making the car practical enough for everyday use.
Design, Aesthetics, and Practicality
The M440i Convertible’s styling is unmistakably M. The aggressive grille, larger wheels, and subtle body kit give it a purposeful, sporty look, while the laser headlights add a modern flourish. The convertible roof mechanism is quick, taking under 15 seconds at low speeds, and the cabin remains well insulated from road noise and vibrations. The NVH levels are surprisingly low for a convertible, thanks to BMW’s meticulous engineering.
Practicality is a trade‑off. The roof’s weight and the need for a robust structural frame mean that the car is heavier than a typical coupe. The rear seats are cramped, and the cabin’s touch‑heavy controls may feel less intuitive for some users. For markets where practicality is paramount, the convertible format still falls short, but for enthusiasts who value the thrill of an open‑top drive, the M440i delivers a compelling blend of performance and style.
Final Thoughts
The BMW M440i Convertible proves that a convertible can be more than a style statement. It offers the same punchy straight‑six and M‑tuned chassis as its coupe sibling, while adding the freedom of an open roof. Its handling, interior refinement, and striking design make it a smart choice for those who want a performance car that also feels like a celebration every time the top is lowered. If you’re looking for a vehicle that marries M‑series muscle with the joy of open‑top driving, the M440i Convertible is worth a closer look.