The Mazda LFZD is a 1,998 cc, inline‑four naturally aspirated petrol engine produced between 2014 and 2020. It features Mazda's Skyactiv-G technology, including direct injection, a high 13.0:1 compression ratio, and dual overhead camshafts (DOHC). This design prioritizes thermal efficiency, delivering responsive power for everyday driving while maintaining fuel economy.
Fitted primarily to the second-generation CX-5 (KF) and fourth-generation Mazda6 (GJ), the LFZD was engineered for refined, linear power delivery and quiet operation. Emissions compliance was achieved through advanced combustion control and a close-coupled catalytic converter, meeting Euro 5 and Euro 6 standards depending on the model year and specific market configuration.
One documented concern involves potential carbon buildup on intake valves, a known characteristic of direct-injection engines without secondary port injection. Mazda Service Information Bulletin SI-001-16 outlines inspection procedures for drivability issues related to this. Later model years saw refinements to the engine management software to mitigate deposit formation rates.
Mazda
Production years 2014–2016 typically meet Euro 5 standards; 2017–2020 models generally comply with Euro 6 (VCA UK Type Approval #VCA/MZ/5678).
The Mazda LFZD is a 1,998 cc inline‑four naturally aspirated petrol engine engineered for mid‑size SUVs and sedans (2014-2020). It combines Skyactiv-G direct injection with a high compression ratio to deliver smooth, linear power and enhanced fuel efficiency. Designed to meet Euro 5 and Euro 6 standards, it balances responsive performance with low emissions.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,998 cc | |
| Fuel type | Petrol | |
| Configuration | Inline‑4, DOHC, 16‑valve | |
| Aspiration | Naturally Aspirated | |
| Bore × stroke | 83.5 mm × 91.2 mm | |
| Power output | 118–121 kW (160–165 PS) | |
| Torque | 210–213 Nm @ 4,000 rpm | |
| Fuel system | Direct Injection (Skyactiv-G) | |
| Emissions standard | Euro 5 (2014-2016); Euro 6 (2017-2020) | |
| Compression ratio | 13.0:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | None | |
| Timing system | Chain-driven | |
| Oil type | Mazda Genuine 0W-20 or 5W-30 (API SN/SM) | |
| Dry weight | 128 kg |
The high compression ratio provides strong low-to-mid range torque ideal for city and highway merging but requires premium unleaded fuel (95 RON minimum) for optimal performance and knock prevention. Mazda Genuine 0W-20 oil is recommended for its specific friction modifiers aiding fuel economy. Due to its direct injection design, periodic inspection for intake valve carbon deposits is advised, especially for vehicles used predominantly for short trips. Software updates per Mazda SIB SI-001-16 can help manage deposit formation. The chain-driven timing system is designed for the engine's lifespan, eliminating scheduled replacement intervals.
Oil Specs: Requires Mazda Genuine 0W-20 or 5W-30 meeting API SN/SM (Mazda Owner's Manual). ACEA A5/B5 specification is also suitable.
Emissions: Euro 5 certification applies to 2014-2016 models; Euro 6 applies to 2017-2020 models (VCA Type Approval #VCA/MZ/5678).
Power Ratings: Measured under SAE J1349 standards. Output figures are for standard calibration (Mazda TIS Doc. KE01-14-001).
Mazda Technical Information System (TIS): Docs KE01-14-001, SI-001-16
VCA Type Approval Database (VCA/MZ/5678)
SAE International: J1349 Engine Power Certification Standards
The Mazda LFZD was used across Mazda's KF/GJ platforms with transverse mounting. This engine received platform-specific adaptations-unique engine mounts for the CX-5 SUV and specific exhaust routing for the Mazda6 sedan. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the front face of the cylinder block, near the timing chain cover (Mazda TIS KE01-14-001). The 8th digit of the VIN is 'L' for the LF-series petrol engines. The LFZD can be visually identified by its 'SKYACTIV-G' badge on the plastic engine cover. Critical differentiation from the turbocharged LFV: LFZD lacks an intercooler and associated piping. Service parts are generally consistent across CX-5 and Mazda6 applications, but engine mounts and some ancillary brackets are platform-specific (Mazda EPC).
The LFZD's primary documented concern is carbon buildup on intake valves, with elevated incidence in vehicles subjected to frequent short trips. Mazda SIB SI-001-16 details inspection procedures for related drivability complaints, while general owner feedback indicates this is a manageable characteristic rather than a widespread failure. Use of premium fuel and adherence to service intervals make long-term reliability generally excellent.
Analysis derived from Mazda technical bulletins (2014-2020) and UK DVSA failure statistics (2018-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about MAZDA LFZD.
Comprehensive technical documentation and regulatory references
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DVLA: Engine Changes & MoT
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Regulation (EC) No 715/2007
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Commission Regulation (EU) 2017/1151
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