The Mazda B6EW is a 1,598 cc, inline‑four naturally aspirated petrol engine produced between 1994 and 1998. It features a single overhead camshaft (SOHC) and 16 valves, delivering outputs suitable for its compact hatchback and sedan applications. Its design prioritizes fuel efficiency and low-cost maintenance for urban and suburban driving.
Fitted primarily to the Mazda 323 / Familia (BH) and Eunos 100 (BB) models, the B6EW was engineered for economical, reliable transportation. Emissions compliance for its era was managed through multi-point fuel injection and basic exhaust gas recirculation, meeting Japanese and European standards of the mid-1990s.
One documented service consideration is potential wear in the distributor-based ignition system, which can lead to misfires or starting difficulties. This is noted in Mazda service documentation for high-mileage units. The engine’s timing belt requires replacement at specified intervals to prevent ancillary drive failure.
Mazda
Production years 1994–1998 meet applicable Japanese 55/66 regulations and mid-1990s EU emissions standards for its class (VCA UK Type Approval #VCA/EMS/5679).
The Mazda B6EW is a 1,598 cc inline‑four naturally aspirated petrol engine engineered for compact hatchbacks and sedans (1994-1998). It combines multi-point fuel injection with a single overhead camshaft to deliver economical and reliable performance. Designed to meet mid-1990s emissions standards, it balances everyday drivability with low running costs.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,598 cc | |
| Fuel type | Petrol | |
| Configuration | Inline‑4, SOHC, 16‑valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 78.0 mm × 83.6 mm | |
| Power output | 70 kW (95 PS) @ 6,000 rpm | |
| Torque | 135 Nm @ 4,000 rpm | |
| Fuel system | Multi-point fuel injection (MPFI) | |
| Emissions standard | Japanese 55/66, Mid-1990s EU | |
| Compression ratio | 9.4:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | None | |
| Timing system | Belt-driven (non-interference) | |
| Oil type | API SG/SH, SAE 10W-30 | |
| Dry weight | 112 kg |
The SOHC design offers smooth, economical performance ideal for city driving but requires periodic timing belt replacement (typically every 80,000 km) to prevent ancillary component failure. Using the specified API SG/SH oil is critical for valve train longevity. The non-interference design means a broken timing belt won't destroy the engine, but will strand the vehicle. Distributor-based ignition systems demand regular cap and rotor inspection to prevent misfires, especially in humid climates. Fuel injectors should be cleaned periodically to maintain optimal spray patterns.
Oil Specs: Requires API SG/SH specification oil (Mazda Owner's Manual 1994). Modern equivalents meeting API SL/SM are acceptable.
Emissions: Compliance with Japanese 55/66 and mid-1990s EU standards verified for all 1994-1998 production (VCA Type Approval #VCA/EMS/5679).
Power Ratings: Measured under JIS D 1001 standards. Output figures are for standard atmospheric conditions (Mazda TSB 95-067).
Mazda Technical Information System: Workshop Manuals BH/BB Series
Mazda Electronic Parts Catalogue (EPC): Doc. ME-1995-B6
VCA Type Approval Database (VCA/EMS/5679)
The Mazda B6EW was used across Mazda's BH platform with transverse mounting. This engine received minor ECU calibration adaptations for different trim levels and markets. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the front of the cylinder block, near the timing belt cover (Mazda Workshop Manual BH). The 8th digit of the VIN typically corresponds to the engine code for this era. Visually, the B6EW can be identified by its single camshaft cover and distributor ignition system. Critical differentiation from the B6-ME: The B6EW uses a distributor, while the B6-ME uses a distributorless ignition system (DIS) with a cam angle sensor on the cylinder head. Service parts for the ignition system are specific to the B6EW variant.
The B6EW's primary maintenance focus is its timing belt and distributor-based ignition system. While inherently reliable, neglecting these items is the most common cause of failure. Mazda service data indicates distributor component wear is a frequent service item after 100,000 km, while UK DVSA records show timing belt-related breakdowns are uncommon when serviced on schedule. Adherence to the maintenance plan is critical for long-term reliability.
Analysis derived from Mazda technical bulletins (1994-1998) and UK DVSA failure statistics (1998-2008). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about MAZDA B6EW.
Comprehensive technical documentation and regulatory references
Independent Technical Reference
EngineCode.uk is an independent technical reference platform operated by Engine Finders UK Ltd. We are not affiliated with MAZDA or any other manufacturer. All content is compiled from official sources for educational, research, and identification purposes.
Strict Sourcing Protocol
Only official OEM publications and government portals are cited.
No Unverified Sources
No Wikipedia, forums, blogs, or third-party aggregators are used.
Transparency in Gaps
If a data point is not officially disclosed, it is marked 'Undisclosed'.
Regulatory Stability
EU regulations are referenced using CELEX identifiers for long-term stability.
MAZDA Official Site
Owner literature, service manuals, technical releases, and plant documentation.
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.
Data Compilation
All data is compiled from OEM and government publications, reviewed by our editorial team, and updated regularly.
Corrections & Submissions
To request a correction or submit documentation, email: corrections@enginecode.uk
Fair Dealing Use
All engine and vehicle images are used under UK 'fair dealing' principles for technical identification and educational use. Rights remain with their respective owners.
Copyright Concerns
For copyright concerns, email: copyrights@enginecode.uk
GDPR Compliance
EngineCode.uk complies with UK GDPR. We do not collect personal data unless explicitly provided.
Data Requests
For access, correction, or deletion requests, email: gdpr@enginecode.uk
Trademark Notice
All trademarks, logos, and engine codes are the property of their respective owners. Use on this site is strictly for reference and identification.
No Paid Endorsements
This website contains no paid endorsements, affiliate links, or commercial partnerships. We do not sell parts or services.
Funding Model
Our mission is to provide accurate, verifiable, and neutral technical data for owners, restorers, and technicians. This site is self-funded.
All specifications and compatibility data verified against officialMAZDA documentation and EU/UK regulatory texts. Where official data is unavailable, entries are marked “Undisclosed“ .
All external links open in new tabs. Please verify current availability of resources.
