Yes. For the 2026 model year, every combustion-powered 4 Series engine (430i and M440i) is integrated with 48V mild-hybrid technology. This system utilizes an electric starter-generator to recover energy during deceleration and provide an “eBoost” of supplemental power during rapid acceleration.
The M4 Competition xDrive Coupe remains the performance flagship, achieving 0-60 mph in just 3.4 seconds. Following closely is the all-electric i4 M50, which utilizes dual motors to sprint to 60 mph in 3.7 seconds.
Introduced for 2026 on M440i and Shadowline trims, this technology uses fiber-optic glass threads illuminated by laser diodes. This creates a high-intensity, multi-dimensional visual signature that is significantly more luminous than traditional LED units while maintaining precise light cutoff.
The 2026 4 Series features a multi-layer fabric soft top that can be opened or closed in approximately 10 seconds. This operation can be performed while the vehicle is in motion at speeds up to 30 mph.
| Body Style | Trunk Volume | Technical Configuration |
|---|---|---|
| 4 Series Coupe | 12.0 – 15.5 cu ft | Traditional Trunk |
| 4 Series Gran Coupe | 16.6 cu ft | Powered Liftback |
| 4 Series Convertible | 9.0 cu ft | Variable Soft-Top Compartment |
Yes. When properly equipped with the factory-available tow hitch, the M440i xDrive has a maximum braked towing capacity of 1,800 kg (approximately 3,968 lbs). The 430i models are rated for up to 1,600 kg (3,527 lbs).
Standard on higher trims, this system projects vital data, including speed and safety alerts, directly into the driver’s line of sight. The Augmented View feature overlays real-time navigation directions and street-level instructions onto a live video feed from the front-facing camera.
BMW’s xDrive intelligent all-wheel-drive system is available on all 4 Series models. While the system remains rear-biased to preserve BMW’s signature handling dynamics, it can divert 100% of torque to either axle in milliseconds to manage Michigan’s winter road conditions.
