Displacement: 2,998 cc
The heart of the 2026 BMW X7 xDrive40i is the B58 3.0-liter BMW TwinPower Turbo inline 6-cylinder engine. This power unit features a TwinScroll turbocharger and a 48V mild-hybrid system that utilizes an electric motor integrated into the transmission to provide an additional 12 hp and 200 Nm of torque for smoother start-stop transitions and extra e-boost during acceleration.
Max Power: 375 bhp @ 5,200–6,250 rpm
The BMW X7 xDrive40i delivers a robust 375 brake horsepower (bhp). This output is achieved through precision tuning of the Valvetronic fully variable valve timing and Double-VANOS variable camshaft timing, ensuring the engine breathes efficiently across a wide power band.
Max Torque: 540 Nm @ 1,850–5,000 rpm
Torque is a standout feature, with a peak of 540 Nm (including the mild-hybrid boost). The flat torque curve provides effortless pulling power, making the X7 feel surprisingly agile for a vehicle of its stature, particularly during highway overtaking maneuvers.
No. of Cylinders: 6
BMW remains committed to its signature straight-six configuration. The 6-cylinder layout is inherently balanced, offering superior smoothness compared to V6 alternatives. This configuration minimizes vibrations, contributing to the X7's whisper-quiet cabin environment.
Valve Train: DOHC (Double Overhead Camshaft)
The engine utilizes a Dual Overhead Camshaft (DOHC) setup with 4 valves per cylinder. This allows for precise control over the air-fuel mixture, optimized by BMW's proprietary Valvetronic technology, which regulates the intake valve lift instead of using a traditional throttle butterfly.
Fuel System: GDI (Gasoline Direct Injection)
High-precision direct injection operates at pressures up to 350 bar. By injecting fuel directly into the combustion chamber, the system ensures a cooling effect that allows for a higher compression ratio and more efficient combustion, reducing both fuel consumption and emissions.
0-100 km/h time: 5.8 seconds
Despite its significant mass, the X7 xDrive40i can sprint from a standstill to 100 km/h in just 5.8 seconds. This performance is facilitated by the rapid-shifting 8-speed Steptronic transmission and the immediate torque delivery from the 48V mild-hybrid motor.
Top Speed: 250 km/h
The BMW X7 is electronically limited to a top speed of 250 km/h (155 mph). Aerodynamic optimizations, including active air flaps in the kidney grille, ensure the vehicle remains stable and composed even at high autobahn speeds.
