BMW 5 Series G31 340 kW N63B44C Engine Overview
The BMW 5 Series G31 Touring, powered by the N63B44C engine between 2017 and 2022, is a unique blend of high-performance engineering and premium practicality. With 340 kW (462 hp) and around 650 Nm of torque, this 4.4-liter twin-turbocharged V8 engine turns the G31 into one of the fastest and most powerful wagons in its class. It combines BMW’s sporty heritage with everyday usability, offering dynamic driving, cargo space, and comfort in one premium package.
Engine Specifications Summary
| Specification | Details |
|---|---|
| Engine Type | 4.4-liter V8, twin-turbocharged |
| Displacement | 4395 cc |
| Power Output | 340 kW (462 hp) |
| Torque | Approx. 650 Nm |
| Fuel Type | Petrol |
| Injection System | Direct Injection |
| Valvetrain | DOHC with Valvetronic & VANOS |
| Engine Code | N63B44C |
Key Features and Technologies
Twin-Turbocharged V8 Power
The N63B44C uses two turbochargers mounted in a “hot-vee” layout, ensuring rapid spool-up, high torque at low RPMs, and relentless acceleration across the rev range.
Executive-Level Performance
The G31 Touring reaches 100 km/h in under 5 seconds thanks to the powerful V8 and xDrive AWD system (in applicable variants), making it a true high-performance estate.
Precision Fuel Management
High-precision direct injection combined with advanced knock sensors and cooling systems keeps the engine efficient, even under heavy loads.
Valvetronic and Double VANOS
BMW’s variable valve lift and timing systems ensure the engine adapts instantly to driving demands, maximizing fuel efficiency and power output as needed.
Refined Driving Experience
Despite its raw power, the N63B44C is engineered for smoothness, making long journeys comfortable and quiet without sacrificing sportiness.
Applications and Compatibility
| BMW Model | Model Years |
|---|---|
| BMW 5 Series G31 Touring | 2017 – 2022 |
Found in performance-oriented trims such as the M550i xDrive Touring, combining practicality with exceptional driving dynamics.
Why Choose the BMW G31 N63B44C Engine?
High Performance Meets Utility
Perfect for drivers wanting sports car-level acceleration in a family-friendly wagon.
Efficient for a V8
Though powerful, the engine incorporates fuel-saving technologies to reduce consumption and emissions compared to earlier V8s.
Versatile and Comfortable
Ideal for long-distance touring with ample space and supreme refinement on highways or winding roads.
Engineered to Last
With proper care and maintenance, the N63B44C offers long-term reliability and consistent high-level performance.
