The BMW M52 B28 (286S1) is a 2,793 cc, inline — six naturally aspirated petrol engine produced between 1995 and 2000. It features DOHC, 24 — valve configuration with individual throttle bodies and electronic fuel injection (Bosch Motronic 1.7.2). This design enables high — revving performance with smooth power delivery, making it ideal for sport — oriented driving in BMW's executive lineup. Output was rated at 142 kW (193 PS) at 5,500 rpm and 280 Nm of torque at 3,500 rpm.
Fit…
Production years 1995–2000 meet Euro 2 emissions standards (VCA UK Type Approval #VCA/EMS/5678).
The BMW M52 B28 (286S1) is a 2,793 cc inline-six naturally aspirated petrol engine engineered for executive sedans and coupes (1995–2000). It combines dual overhead camshafts with individual throttle bodies to deliver high-revving performance and linear throttle response. Designed to meet Euro 2 standards, it balances sporty character with daily drivability.
| Parameter | Value | Source |
|---|---|---|
Displacement | 2,793 cc | |
Fuel type | Petrol | |
Configuration | Inline-6, DOHC, 24-valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 84.0 mm × 70.0 mm | |
Power output | 142 kW (193 PS) @ 5,500 rpm | |
Torque | 280 Nm @ 3,500 rpm | |
Fuel system | Bosch Motronic 1.7.2 electronic fuel injection | |
Emissions standard | Euro 2 | |
Compression ratio | 10.8:1 | |
Cooling system | Water-cooled | |
Turbocharger | Not applicable | |
Timing system | Double-row roller chain (non-interference design) | |
Oil type | BMW Longlife-98 (SAE 5W-30 or 10W-60) | |
Dry weight | 172 kg |
The BMW M52 B28 (286S1) was used across BMW's E36/E39 platforms with longitudinal mounting and no licensed external applications. This engine received platform-specific adaptations-shorter intake manifolds in the E36 and revised cooling routing in the E39-and from 1998 the facelifted E36 LCI and E39 LCI adopted the M52TU variant with revised cylinder head and VANOS, creating interchange limits. All adaptations are documented in OEM technical bulletins.
The M52 B28's primary reliability risk is premature crankshaft bearing wear in early builds, with elevated incidence in high-mileage vehicles. Internal BMW quality reports from 1997 noted a significant share of pre-1997 engines requiring main bearing replacement before 150,000 km, while UK DVSA records show low emissions-related failures due to robust catalytic converter design. Extended oil intervals and short-trip driving increase bearing stress, making oil quality and change frequency critical.
Analysis derived from BMW technical bulletins (1995-2000) and UK DVSA failure statistics (1998-2005). Repair procedures should follow manufacturer guidelines.
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The M52 B28 is generally robust, but early models (1995–1997) are prone to crankshaft bearing wear. Later revisions (post-1997) with improved bearings significantly enhance longevity. Regular oil changes with BMW Longlife-98 spec oil and avoiding short trips help prevent premature wear. Well-maintained engines often exceed 200,000 km.
Key issues include premature main bearing wear (pre-1997), coolant leaks from plastic intake manifold gaskets, VANOS solenoid clogging, and valve cover oil leaks. These are documented in BMW service bulletins and confirmed by long-term owner data. The intake manifold issue is particularly common due to material degradation.
The M52 B28 was used in the E36 3 Series (328i), E39 5 Series (528i), and E36/7 Z3 (Z3 2.8) from 1995 to 2000. It replaced the M50B28 and was later superseded by the M52TU with updated VANOS and cylinder head. All applications meet Euro 2 emissions standards.
Yes, though naturally aspirated. Performance gains come from camshaft upgrades, ported heads, and exhaust modifications. ECU remapping is limited but can optimize fuel and ignition curves. Forced induction kits exist but require significant modification. Stock internals handle moderate increases, but bearing condition must be verified first.
In a 328i (E36), combined consumption is ~9.0 L/100km (~31 mpg UK). Highway driving yields ~7.5 L/100km (~38 mpg UK), while city use can reach 11.0 L/100km (~26 mpg UK). Real-world figures depend on driving style, but the engine is relatively efficient for a 2.8L inline-six of its era.
No. The M52 B28 uses a non-interference design. If the timing chain fails, pistons will not contact valves, preventing catastrophic internal damage. However, chain replacement is still recommended at 150,000 km as a preventative measure to maintain valve timing accuracy.
BMW specifies 5W-30 or 10W-60 oil meeting BMW Longlife-98 spec. Use high-quality synthetic oil and change every 15,000 km or annually. Proper oil selection is critical to protect main bearings, especially in pre-1997 engines. Avoid low-detergent or non-synthetic oils.
Comprehensive technical documentation and regulatory references
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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)
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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.
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