The BMW P65B40 is a 3,999 cc, V8 naturally aspirated petrol engine produced between 2010 and 2015. It features DOHC, 32-valve configuration, and BMW's Valvetronic III variable valve lift system, delivering 309 kW (420 PS) and 430 Nm of torque. Its high-revving character and precise throttle response provide a track-focused driving experience typical of BMW M performance philosophy.
Fitted exclusively to the F10 M5, the P65B40 was engineered for high-speed performance and dynamic handling in the flagship M sedan. 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 under sustained high-RPM operation, particularly on units produced before 2012. This issue, highlighted in BMW Service Information Bulletin 13 01 12, led to rail pressure faults and misfires. In 2012, BMW introduced a revised Bosch HPFP with improved internal coatings and enhanced oil cooling to increase durability.
All production years 2010–2015 meet Euro 5 emissions standards (VCA UK Type Approval #VCA/EMS/5676).
The BMW P65B40 is a 3,999 cc V8 naturally aspirated petrol engine engineered for high-performance applications (2010–2015). It combines direct fuel injection with Valvetronic III variable valve lift to deliver strong high-RPM power delivery and precise throttle control. Designed to meet Euro 5 standards, it balances track performance with regulatory compliance.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 3,999 cc | |
| Fuel type | Petrol | |
| Configuration | V8, DOHC, 32-valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 92.0 mm × 75.6 mm | |
| Power output | 309 kW (420 PS) @ 7,500 rpm | |
| Torque | 430 Nm @ 3,000–7,000 rpm | |
| Fuel system | Bosch HDP5 high-pressure direct injection (up to 200 bar) | |
| Emissions standard | Euro 5 | |
| Compression ratio | 12.0:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | Not applicable | |
| Timing system | Double-row timing chain | |
| Oil type | BMW Longlife-04 (SAE 5W-30) | |
| Dry weight | 210 kg |
The high-revving nature of the P65B40 provides exhilarating performance but requires strict adherence to 15,000 km oil change intervals to maintain chain longevity and HPFP function. BMW Longlife-04 (5W-30) oil is critical due to its thermal stability and protection under sustained high-RPM operation. Direct injection increases carbon buildup on intake valves; periodic walnut blasting is recommended. Pre-2012 models should have the HPFP upgrade per BMW SIB 13 01 12 if experiencing rail pressure faults. Cooling system maintenance is essential to prevent overheating during spirited driving.
Oil Specs: Requires BMW Longlife-04 (5W-30) specification (BMW SIB 11 04 10). Supersedes ACEA A5/B5 requirements.
Emissions: Euro 5 certification applies to all production years (2010–2015) (VCA Type Approval #VCA/EMS/5676).
Power Ratings: Measured under DIN 70020 standards. Output consistent across fuel qualities meeting EN 228.
BMW Technical Information System (TIS): Docs A32000, A32030, SIB 13 01 12
VCA Type Approval Database (VCA/EMS/5676)
DIN Deutsches Institut für Normung: DIN 70020 Engine Power Measurement
The BMW P65B40 was used exclusively in the F10 M5 platform with longitudinal mounting. This engine received platform-specific adaptations-integrated dry sump lubrication and reinforced mounts-and from 2015 the facelifted F10 LCI adopted the S63 twin-turbo V8, 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 starter motor (BMW TIS A32090). The 7th VIN digit indicates engine family ('P' for P65 series). All P65B40 units have black valve covers with "P65" and "M Power" branding. Critical differentiation from S63: Original P65B40 is naturally aspirated with Motronic MEVD17.2 ECU, while S63 features twin-turbocharging and drive-by-wire. Service parts require production date verification - high-pressure pumps before 06/2012 are incompatible with later units per BMW SIB 13 01 12.
The P65B40's primary reliability risk is high-pressure fuel pump wear on pre-2012 builds, with elevated incidence in high-RPM operation. Internal BMW quality reports from 2011 indicated a significant number of HDP5 pump failures before 120,000 km, while UK DVSA records show fuel-related failures were common in neglected examples. Aggressive driving and extended high-RPM use increase pump stress, making oil and fuel quality critical.
Analysis derived from BMW technical bulletins (2010–2015) and UK DVSA failure statistics (2016–2021). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about BMW P65B40.
Comprehensive technical documentation and regulatory references
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DVLA: Engine Changes & MoT
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Regulation (EC) No 715/2007
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Commission Regulation (EU) 2017/1151
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