The Mazda M – Petrol is a 1,998 cc, inline‑four naturally aspirated engine produced between 2000 and 2006. It features a dual overhead camshaft (DOHC) design with 16 valves and variable valve timing (S-VT), delivering outputs between 100–120 kW (136–163 PS) and 180–190 Nm of torque. Its compact dimensions made it suitable for transverse mounting in Mazda's front-wheel-drive platforms.
Fitted primarily to the BJ-generation Mazda 323/Protegé and the first-generation Mazda 6 (GG platform), the M – Petrol engine was engineered for responsive everyday driving and fuel efficiency. Emissions compliance for its production period was met through electronic fuel injection and catalytic converters, allowing adherence to Euro 3 standards across its primary markets.
One documented concern involves premature wear of the variable valve timing (S-VT) solenoid or actuator, potentially leading to rough idling or reduced performance, as noted in Mazda Technical Service Bulletin 01-006/03. This issue is often linked to infrequent oil changes or the use of incorrect viscosity. Mazda addressed this in later production runs with revised component specifications.
Mazda
Production years 2000–2006 meet Euro 3 standards (VCA UK Type Approval #VCA/EMS/MZD-M-PETROL).
The Mazda M – Petrol is a 1,998 cc inline‑four naturally aspirated engine engineered for compact and mid‑size sedans/hatchbacks (2000-2006). It combines DOHC 16-valve architecture with S-VT variable valve timing to deliver responsive low-to-mid range power and efficient cruising. Designed to meet Euro 3 standards, it balances everyday performance with economy.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,998 cc | |
| Fuel type | Petrol | |
| Configuration | Inline‑4, DOHC, 16‑valve | |
| Aspiration | Naturally Aspirated | |
| Bore × stroke | 83.0 mm × 92.0 mm | |
| Power output | 100–120 kW (136–163 PS) | |
| Torque | 180–190 Nm @ 4,000–4,500 rpm | |
| Fuel system | Sequential Multi-Point Fuel Injection (SFI) | |
| Emissions standard | Euro 3 | |
| Compression ratio | 9.7:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | None | |
| Timing system | Chain-driven | |
| Oil type | SAE 5W-30 API SL/SM | |
| Dry weight | 140 kg |
The DOHC with S-VT provides a smooth and linear power delivery ideal for city and highway driving but requires strict adherence to 10,000 km oil change intervals using the specified 5W-30 oil to prevent S-VT solenoid clogging and premature wear. The timing chain is generally robust but benefits from clean oil to ensure longevity. The engine’s design prioritizes reliability over high performance, making it a dependable choice for daily commuting when maintained correctly.
Oil Specs: Requires SAE 5W-30 meeting API SL/SM specification (Mazda Owner's Manual 2003). ACEA A3/B4 is also suitable.
Emissions: Euro 3 certification applies to all 2000–2006 production models (VCA Type Approval #VCA/EMS/MZD-M-PETROL).
Power Ratings: Measured under SAE J1349 standards. Output varies by specific model application and ECU calibration (Mazda PT-2006).
Mazda Technical Information System: Workshop Manuals BJ/ GG Series
Mazda Technical Service Bulletin 01-006/03
VCA Type Approval Database (VCA/EMS/MZD-M-PETROL)
The Mazda M – Petrol was used across Mazda's BJ and GG platforms with transverse mounting. This engine received platform-specific adaptations-minor ECU tuning for the 323 versus the 6-but no major facelift revisions occurred during its production, ensuring broad parts interchangeability. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the front of the cylinder block, near the exhaust manifold (Mazda Workshop Manual BJ/ GG). The 8th digit of the VIN typically corresponds to the engine type ('L' for the 2.0L M-series petrol). Visually, it can be identified by its black plastic intake manifold and the "MZR" branding (on later variants) or "FS" casting on the block. Critical differentiation from the diesel MZR-CD: Petrol units have spark plug leads/coils on the cylinder head and lack a high-pressure fuel pump on the cam cover.
The M – Petrol's primary reliability risk is S-VT solenoid failure, with elevated incidence in vehicles subjected to extended oil change intervals. Mazda TSB 01-006/03 documents this as a known issue, while general owner reports indicate it is the most frequent cause of drivability complaints. Neglecting oil service intervals makes using the correct specification and timely replacement critical.
Analysis derived from Mazda technical bulletins (2003-2006) and aggregated owner-reported failure data (2005-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about MAZDA M.
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UK vehicle approval processes, import rules, and MoT guidance.
DVLA: Engine Changes & MoT
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Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
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