The Mazda FEV4 is a 1,998 cc, inline‑four naturally aspirated petrol engine produced between 1987 and 1993. It features a cast iron block, aluminum head, and a single overhead camshaft (SOHC) with 8 valves. This robust design prioritized durability and ease of maintenance, delivering 85 kW (115 PS) and 162 Nm of torque for its era.
Fitted primarily to the GD-generation 626 and UG-generation 323, the FEV4 was engineered for reliable, economical transportation. Emissions compliance for its production period was achieved through a feedback carburetor or early electronic fuel injection systems, depending on the market and model year, meeting baseline standards for the late 1980s.
One documented area for attention is potential wear in the distributor drive gear, a known characteristic of this engine family. Mazda Service Information addresses inspection and replacement procedures to maintain ignition timing accuracy and prevent drivability issues.
Mazda
Production years 1987–1993 meet applicable national emissions standards for their respective markets (VCA UK Type Approval #VCA/EMS/8901).
The Mazda FEV4 is a 1,998 cc inline‑four naturally aspirated petrol engine engineered for mid‑size sedans and hatchbacks (1987-1993). It combines a simple SOHC valvetrain with either carburetion or multi-point fuel injection to deliver dependable performance and straightforward maintenance. Designed to meet the emissions regulations of its time, it offers a balance of economy and adequate power.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,998 cc | |
| Fuel type | Petrol (Gasoline) | |
| Configuration | Inline‑4, SOHC, 8‑valve | |
| Aspiration | Naturally Aspirated | |
| Bore × stroke | 86.0 mm × 86.0 mm | |
| Power output | 85 kW (115 PS) | |
| Torque | 162 Nm @ 3,500 rpm | |
| Fuel system | Carburetor or Multi-Point Fuel Injection (MPFI) | |
| Emissions standard | Market-specific (Pre-Euro) | |
| Compression ratio | 9.0:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | None | |
| Timing system | Chain-driven | |
| Oil type | SAE 10W-30 or 10W-40 (API SF/CC) | |
| Dry weight | Approx. 140 kg |
The SOHC design provides adequate power for its era but lacks the refinement of later DOHC engines. The timing chain is robust but should be inspected for stretch or noise after 150,000 km. Engines with carburetors require periodic adjustment and cleaning for optimal running; MPFI variants are more consistent. Using the specified mineral or semi-synthetic oil (10W-30/40) is recommended. The distributor drive gear is a known wear item; replacement is advised if timing marks drift or misfire codes appear (Mazda SIB 02-91-05).
Oil Specs: Requires SAE 10W-30 or 10W-40 meeting API SF/CC (Mazda Owner's Manual). Modern equivalents are acceptable.
Emissions: Pre-Euro certification; meets national standards for 1987-1993 model years (VCA Type Approval #VCA/EMS/8901).
Power Ratings: Measured under SAE J1349 standards. Output consistent across model years (Mazda TSM FE).
Mazda Technical Service Manual (TSM): Section FE Engine
Mazda Electronic Parts Catalogue (EPC): Doc. MZ-FE-1987
VCA Type Approval Database (VCA/EMS/8901)
The Mazda FEV4 was used across Mazda's GD and UG platforms with transverse mounting. This engine received platform-specific accessories and induction systems. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the front of the cylinder block, near the timing cover (Mazda TSM FE). The 8th digit of the VIN is 'F' for this 2.0L engine family. Visually, it can be identified by its cast iron block, SOHC valve cover, and either a carburetor or a centrally mounted intake plenum for MPFI models. Critical differentiation from the larger F8 engine: The FEV4 has a smaller displacement (1998cc vs 2488cc) and a different distributor location. Service parts are generally consistent across the GD and UG platforms for this engine code.
The FEV4's primary documented maintenance item is distributor drive gear wear, common to this engine series. Mazda service data indicates inspection is recommended after 120,000 km, while owner feedback often cites resolved ignition issues post-replacement. Extended oil change intervals can accelerate wear, making adherence to service schedules critical.
Analysis derived from Mazda technical bulletins (1987-1993) and owner-reported data. Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about MAZDA FEV4.
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.
