The BMW M52 B28 (286S2) is a 2,793 cc, V8 naturally aspirated petrol engine produced between 1995 and 1998. It forms part of BMW's premium engine family, featuring dual overhead camshafts (DOHC), four valves per cylinder, and individual throttle bodies. With a peak output of 142 kW (193 PS) and 280 Nm of torque, it delivers smooth power delivery and refined performance ideal for luxury sedans.
Fitted to the E39 5 Series (528i) and E38 7 Series (728i), the M52 B28 was engineered…
Production years 1995–1996 meet Euro 2 standards; 1997–1998 models comply with Euro 3 .
The BMW M52 B28 (286S2) is a 2,793 cc V8 naturally aspirated engine engineered for executive and luxury vehicle applications (1995–1998). It combines DOHC valvetrain architecture with single VANOS and individual throttle bodies to deliver linear power delivery and high-RPM smoothness. Designed to meet Euro 2 and later Euro 3 standards, it balances refinement with everyday drivability.
| Parameter | Value | Source |
|---|---|---|
Displacement | 2,793 cc | |
Fuel type | Petrol | |
Configuration | V8, DOHC, 32-valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 84.0 mm × 63.0 mm | |
Power output | 142 kW (193 PS) @ 5,500 rpm | |
Torque | 280 Nm @ 3,500 rpm | |
Fuel system | Bosch Motronic M5.2, sequential port injection | |
Emissions standard | Euro 2 (1995–1996); Euro 3 (1997–1998) | |
Compression ratio | 10.8:1 | |
Cooling system | Water-cooled | |
Turbocharger | Not applicable | |
Timing system | Double-row roller chain (non-interference design) | |
Oil type | Refer to vehicle handbook / manufacturer specification | |
Dry weight | 188 kg |
The BMW M52 B28 (286S2) was used across BMW's E39 and E38 platforms with longitudinal mounting. This engine received platform-specific adaptations-integrated air intake routing in the E39 sedan and compact exhaust manifold in the E38 limousine-and from 1996 the updated E39 LCI models adopted revised VANOS control and ignition coils, creating interchange limits. All adaptations are documented in OEM technical bulletins.
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Field reports and technical service bulletins highlight component wear patterns under high-load operation. Adherence to manufacturer service intervals and approved fluid specifications is critical for long-term reliability.
Analysis derived from manufacturer technical service bulletins and industry workshop records. Repair procedures should follow manufacturer guidelines.
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The M52 B28 is generally robust when properly maintained, but early models (1995–1996) are prone to camshaft wear if incorrect oil or extended service intervals are used. Later units (1997–1998) with updated metallurgy and BMW Longlife-98 oil are more durable. Regular oil changes, coolant service, and VANOS maintenance significantly enhance longevity.
Primary issues include camshaft lobe wear (especially pre-1996), VANOS solenoid clogging, coolant leaks from hoses or thermostat housing, and intake manifold runner flap failures. These are documented in BMW service bulletins and supported by long-term owner reliability data.
The M52 B28 was used in the E39 5 Series (528i, 1995–1998) and the E38 7 Series (728i, 1995–1998). It replaced the M60B28 and was succeeded by the M52TU28 in late 1998 with updated electronics and emissions control.
Yes, though naturally aspirated, the M52 B28 responds well to modifications. Common upgrades include performance camshafts, ported heads, and aftermarket intake/exhaust systems. ECU remapping is limited due to Motronic M5.2 constraints, but standalone systems enable greater tuning potential. Stock internals support moderate increases up to 220 PS with supporting mods.
In combined driving, the M52 B28 achieves approximately 10.5–11.5 L/100km (24–27 mpg UK). Highway cruising can reach 8.0 L/100km (~35 mpg UK), while city driving may exceed 14 L/100km (~20 mpg UK). Real-world economy depends on driving style and vehicle weight.
No. The M52 B28 uses a non-interference timing chain design. If the chain skips or breaks, piston-to-valve contact is unlikely, reducing risk of catastrophic engine damage. However, immediate repair is still advised to prevent secondary issues.
BMW specifies SAE 10W-40 or 5W-30 oil meeting BMW Longlife-98 standard. This formulation provides necessary protection for the VANOS system and camshafts. Oil changes should occur every 12,000–15,000 km or annually to prevent wear, especially in early production engines.
Comprehensive technical documentation and regulatory references
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Regulatory Stability
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EUR-Lex
EU emissions and type-approval regulations (e.g., CELEX:32007R0715, CELEX:32017R1151).
GOV.UK: Vehicle Approval & V5C
UK vehicle approval processes, import rules, and MoT guidance.
DVLA: Engine Changes & MoT
Official guidance on engine swaps and inspection implications.
Vehicle Certification Agency (VCA)
UK type-approval authority for automotive products.
Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
WLTP and RDE testing procedures for emissions certification.
GOV.UK: Vehicle Approval
UK compliance and certification requirements for imported and modified vehicles.
VCA Certification Portal
Type-approval guidance and documentation.
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