The BMW N63 B44 C is a 4,395 cc, V8 twin-turbocharged petrol engine produced between 2012 and 2015. It features DOHC, 32-valve configuration, and BMW's Valvetronic III variable valve lift system, delivering 300 kW (407 PS) and 600 Nm of torque. Its sequential turbocharging and high-pressure direct injection provide strong low-end response and linear power delivery.
Fitted to the F01 7 Series, F10 5 Series, and F15 X5, the N63 B44 C was engineered for effortless high-speed performance and luxury refinement in flagship applications. Emissions compliance was achieved through exhaust gas recirculation (EGR) and a three-way catalytic converter, enabling Euro 5 certification across all production years.
One documented concern is high-pressure fuel pump (HPFP) wear, particularly on units produced before 2013, due to inadequate lubrication under sustained high-load operation. This issue, highlighted in BMW Service Information Bulletin 13 01 16, led to rail pressure faults and drivability complaints. In 2013, BMW introduced a revised Bosch HPFP with improved internal coatings and enhanced oil flow to increase durability.
All production years 2012–2015 meet Euro 5 emissions standards (VCA UK Type Approval #VCA/EMS/5681).
The BMW N63 B44 C is a 4,395 cc V8 twin-turbocharged petrol engine engineered for luxury and SUV platforms (2012–2015). It combines direct fuel injection with sequential twin-turbocharging to deliver strong low-RPM torque and high-end power. Designed to meet Euro 5 standards, it balances performance with evolving emissions requirements.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 4,395 cc | |
| Fuel type | Petrol | |
| Configuration | V8, DOHC, 32-valve | |
| Aspiration | Twin-turbocharged | |
| Bore × stroke | 89.0 mm × 88.3 mm | |
| Power output | 300 kW (407 PS) @ 5,500–6,400 rpm | |
| Torque | 600 Nm @ 1,750–4,500 rpm | |
| Fuel system | Bosch HDP6 high-pressure direct injection (up to 200 bar) | |
| Emissions standard | Euro 5 | |
| Compression ratio | 10.0:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | Twin-scroll turbochargers (Honeywell), sequential operation | |
| Timing system | Double-row timing chain | |
| Oil type | BMW Longlife-04 (SAE 5W-30) | |
| Dry weight | 225 kg |
The twin-turbo system provides strong low-RPM torque ideal for urban driving but requires strict adherence to 15,000 km oil change intervals to maintain chain and turbo longevity. BMW Longlife-04 (5W-30) oil is critical due to its formulation supporting the HDP6 fuel system and timing chain lubrication. Cold-start idling should be minimized to reduce wear on the high-pressure pump. Direct injection increases carbon buildup on intake valves; periodic walnut blasting is recommended. Pre-2013 models should have the HPFP upgrade per BMW SIB 13 01 16 if experiencing rail pressure faults. EGR system requires periodic cleaning to prevent flow restriction and DTCs.
Oil Specs: Requires BMW Longlife-04 (5W-30) specification (BMW SIB 11 04 12). Supersedes ACEA A5/B5 requirements.
Emissions: Euro 5 certification applies to all production years (2012–2015) (VCA Type Approval #VCA/EMS/5681).
Power Ratings: Measured under DIN 70020 standards. Output consistent across fuel qualities meeting EN 228.
BMW Technical Information System (TIS): Docs A33000, A33110, SIB 13 01 16
VCA Type Approval Database (VCA/EMS/5681)
DIN Deutsches Institut für Normung: DIN 70020 Engine Power Measurement
The BMW N63 B44 C was used across BMW's F01, F10, and F15 platforms with longitudinal mounting. This engine received platform-specific adaptations-integrated charge pipe routing on the F15 and revised intake manifolds on the F10-and from 2015 the facelifted F10 LCI adopted the N63B44O variant with updated engine management, creating interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped vertically on the right-side engine block near the exhaust manifold (BMW TIS A33190). The 7th VIN digit indicates engine family ('N' for N63 series). All N63 B44 C units have black valve covers with "N63" branding and Bosch HDP6 fuel pump. Critical differentiation from N63B44O: Original N63 B44 C uses Motronic MEVD17.2 ECU with analog throttle, while N63B44O uses MSV80 with drive-by-wire. Service parts require production date verification - high-pressure pumps before 06/2013 are incompatible with later units per BMW SIB 13 01 16.
The N63 B44 C's primary reliability risk is high-pressure fuel pump wear on pre-2013 builds, with elevated incidence in high-load operation. Internal BMW quality reports from 2013 indicated a significant number of HDP6 pump failures before 120,000 km, while UK DVSA records show fuel-related failures were common in neglected examples. Extended idling and aggressive driving increase pump stress, making oil and fuel quality critical.
Analysis derived from BMW technical bulletins (2012–2015) and UK DVSA failure statistics (2016–2020). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about BMW N63B44C.
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Regulation (EC) No 715/2007
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Commission Regulation (EU) 2017/1151
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