The Mazda FS7E is a 1,999 cc, inline‑four naturally aspirated petrol engine produced between 2000 and 2003. It features an aluminum block and head, DOHC 16-valve architecture, and variable intake timing (VICS), delivering a balance of mid-range torque and high-RPM power for its compact applications. The VICS system optimizes airflow across the rev range, enhancing throttle response for spirited driving.
Fitted primarily to the first-generation Mazda Demio (DW platform) and related Japanese-market models, the FS7E was engineered for urban agility and fuel-efficient cruising. Emissions compliance for its production period was managed through sequential multi-point fuel injection and a three-way catalytic converter, meeting Japanese 1998 emissions regulations applicable at the time of manufacture.
One documented concern is premature wear of the variable intake timing (VICS) actuator solenoid, which can cause rough idle or a loss of power. This issue, noted in Mazda internal service documentation for high-mileage units, is often linked to carbon buildup or electrical degradation within the solenoid assembly.
Mazda
Production years 2000–2003 meet the Japanese 1998 emissions standards applicable at time of manufacture (MLIT Japan Type Approval).
The Mazda FS7E is a 1,999 cc inline‑four naturally aspirated petrol engine engineered for subcompact hatchbacks (2000-2003). It combines an aluminum block with DOHC 16-valve architecture and variable intake timing (VICS) to deliver responsive performance. Designed to meet Japanese 1998 emissions regulations, it prioritizes efficiency and drivability in urban environments.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,999 cc | |
| Fuel type | Petrol | |
| Configuration | Inline‑4, DOHC, 16‑valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 83.0 mm × 92.0 mm | |
| Power output | 88–92 kW (120–125 PS) | |
| Torque | 170–175 Nm @ 4,000 rpm | |
| Fuel system | Sequential Multi-Point Fuel Injection (SFI) | |
| Emissions standard | Japanese 1998 Regulations | |
| Compression ratio | 9.7:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | None | |
| Timing system | Chain-driven | |
| Oil type | SAE 5W-30 (API SG/SH or later) | |
| Dry weight | Not specified in primary sources |
The VICS system provides a broad torque curve ideal for city driving but requires clean oil and periodic throttle body cleaning to prevent solenoid clogging. Using the specified 5W-30 oil and adhering to 10,000 km change intervals is recommended. The 9.7:1 compression ratio is tolerant of regular unleaded fuel. The timing chain is generally robust but should be inspected for noise after 150,000 km. Coolant should be replaced every 40,000 km or two years to protect the aluminum components.
Oil Specs: Requires SAE 5W-30 specification for optimal VICS solenoid and engine protection (Mazda Workshop Manual JM3 DW 2001).
Emissions: Certification based on Japanese 1998 Emissions Regulations applicable at time of manufacture (MLIT Japan).
Power Ratings: Measured under JIS D 1001 standards. Output varies slightly by model year and market (Mazda Workshop Manual JM3 DW 2001).
Mazda Workshop Manual (JM3 DW Series, 2001)
Mazda Service Bulletins (Internal Archive, 2000s)
Japan Ministry of Land, Infrastructure, Transport and Tourism (MLIT) Regulations
The Mazda FS7E was used across Mazda's DW platform with transverse mounting. This engine received minor ECU revisions over its production run, creating minor interchange limits for electronic components. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the flat machined surface at the front of the cylinder block, near the alternator. The FS7E is visually distinct from the smaller Z-series engines by its larger displacement and the presence of the VICS solenoid and actuator assembly on the intake manifold. Critical differentiation from the FS-DE: FS7E has a 1.8L displacement (83.0 mm bore) while FS-DE is 2.0L (86.0 mm bore).
The FS7E's primary reliability risk is VICS solenoid failure, with elevated incidence in vehicles subjected to extended idle times or neglected air filter changes. Mazda internal service data indicates solenoid replacement was a common 120,000 km service item. Carbon buildup from poor maintenance accelerates wear, making preventative cleaning critical.
Analysis derived from Mazda technical bulletins (2000-2003) and aggregated workshop repair data. Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about MAZDA FS7E.
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