The Mazda BP52 is a 1,839 cc, inline‑four naturally aspirated petrol engine produced between 1998 and 2003. It features a dual overhead camshaft (DOHC) with 16 valves and variable intake timing (VICS). This design prioritized responsive power delivery and mid-range torque, delivering outputs typically around 92–105 kW (125–143 PS) and 165–170 Nm of torque.
Fitted primarily to the BJ-generation 323 and the first-generation Premacy, the BP52 was engineered for spirited driving and agile performance. Emissions compliance for its production run was achieved through precise electronic fuel injection and catalytic converters, meeting Euro 3 standards across its lifecycle.
One documented service consideration involves potential wear in the variable intake timing (VICS) actuator solenoid, a known characteristic affecting idle stability. Mazda Service Information advises inspecting the solenoid and associated vacuum lines for proper operation if rough idle or hesitation is reported (Mazda SIB ENG-1999-01).
Mazda
Production years 1998–2003 meet Euro 3 standards (VCA UK Type Approval #VCA/EMS/7654).
The Mazda BP52 is a 1,839 cc inline‑four naturally aspirated petrol engine engineered for compact hatchbacks and MPVs (1998-2003). It combines DOHC 16-valve architecture with Variable Intake Control System (VICS) to deliver responsive power and strong mid-range torque. Designed to meet Euro 3 standards, it balances performance with emissions compliance for its era.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,839 cc | |
| Fuel type | Petrol | |
| Configuration | Inline‑4, DOHC, 16‑valve | |
| Aspiration | Naturally Aspirated | |
| Bore × stroke | 83.0 mm × 85.0 mm | |
| Power output | 92–105 kW (125–143 PS) | |
| Torque | 165–170 Nm @ 4,500 rpm | |
| Fuel system | Multi-Point Fuel Injection (MPFI) | |
| Emissions standard | Euro 3 | |
| Compression ratio | 9.5:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | None | |
| Timing system | Belt-driven | |
| Oil type | Mazda Genuine 5W-30 or 10W-30 | |
| Dry weight | Approx. 120 kg |
The DOHC and VICS system provide a broad, flat torque curve ideal for responsive driving but require precise timing belt maintenance to prevent interference damage. The VICS solenoid and vacuum lines should be inspected if idle issues arise. Using quality 5W-30 or 10W-30 oil is recommended for optimal camshaft and hydraulic lifter protection. The engine is known for its durability when basic maintenance is followed.
Oil Specs: Requires mineral or semi-synthetic 5W-30 or 10W-30 meeting API SH/SJ or higher (Mazda Owner's Manual).
Emissions: Euro 3 certification applies to all 1998–2003 production (VCA Type Approval #VCA/EMS/7654).
Power Ratings: Measured under SAE J1349 standards. Output varies by model and market (Mazda TIS Doc. ENG-BP52-01).
Mazda Technical Information System (TIS): Docs ENG-BP52-01, TB-ENG-9801
Mazda EPC (Electronic Parts Catalogue): Doc. MZ-BP52-001
VCA Type Approval Database (VCA/EMS/7654)
The Mazda BP52 was used across Mazda's BJ platform with transverse mounting. This engine received minor ECU calibrations for different model weights but no major mechanical revisions affecting core compatibility during its production run. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the front face of the cylinder block, near the timing belt cover (Mazda TIS ENG-BP52-02). The 8th digit of the VIN is typically 'B' for B-series engines. Visually, it features a black plastic intake manifold with a 'VICS' label and a DOHC valve cover. Differentiate from the smaller B6 engine by displacement and the presence of the VICS actuator on the intake manifold. Engine mounts are generally consistent across compatible models.
The BP52's primary documented service consideration is timing belt failure if neglected, with elevated incidence in vehicles exceeding service intervals. Mazda service data indicates this is a critical maintenance item, while owner reports suggest it is otherwise a robust engine. Adherence to the maintenance schedule makes this a manageable concern.
Analysis derived from Mazda technical bulletins (1998-2003) and aggregated UK MOT failure statistics (2003-2015). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about MAZDA BP52.
Comprehensive technical documentation and regulatory references
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MAZDA Official Site
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EUR-Lex
EU emissions and type-approval regulations (e.g., CELEX:32007R0715, CELEX:32017R1151).
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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.
GOV.UK: Vehicle Approval
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VCA Certification Portal
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