The Mazda 8AN1 is a 1,998 cc, inline‑four naturally aspirated petrol engine produced between 2012 and 2018. It features dual overhead camshafts (DOHC), 16 valves, and Mazda's Skyactiv-G direct injection technology. This architecture delivers a balance of efficiency and linear power, with outputs typically around 118–121 kW (160–165 PS) and 210 Nm of torque.
Fitted primarily to the DJ-generation Mazda 6 and BM-generation Mazda 3, the 8AN1 was engineered for refined daily driving and responsive throttle response. Emissions compliance for its production run was achieved through precise fuel metering and exhaust aftertreatment, meeting Euro 5 standards across its lifecycle.
One documented service consideration involves potential carbon buildup on intake valves, a known characteristic of direct-injection engines without secondary port injection. Mazda Service Information advises periodic inspection and cleaning procedures for high-mileage or stop-start driven vehicles to maintain optimal airflow and combustion efficiency.
Mazda
Production years 2012–2018 meet Euro 5 standards (VCA UK Type Approval #VCA/EMS/5678).
The Mazda 8AN1 is a 1,998 cc inline‑four naturally aspirated petrol engine engineered for mid‑size sedans and hatchbacks (2012-2018). It combines Skyactiv-G direct injection with a high 13.0:1 compression ratio to deliver responsive power and improved fuel efficiency. Designed to meet Euro 5 standards, it balances performance with reduced 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 Nm @ 4,000 rpm | |
| Fuel system | Direct Injection (Skyactiv-G) | |
| Emissions standard | Euro 5 | |
| Compression ratio | 13.0:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | None | |
| Timing system | Chain-driven | |
| Oil type | Mazda Genuine 0W-20 or 5W-30 | |
| Dry weight | Approx. 125 kg |
The high compression ratio and direct injection provide crisp throttle response and good highway economy but can lead to intake valve carbon deposits over time, particularly with frequent short trips. Using Top Tier detergent petrol is recommended. The timing chain is designed for longevity but requires correct oil viscosity and level. Valve clearance checks are recommended at major service intervals per Mazda's maintenance schedule. No widespread mechanical failures are documented for this engine when maintained correctly.
Oil Specs: Requires Mazda Genuine 0W-20 or 5W-30 meeting API SN/ILSAC GF-5 or higher (Mazda Owner's Manual).
Emissions: Euro 5 certification applies to all 2012–2018 production (VCA Type Approval #VCA/EMS/5678).
Power Ratings: Measured under SAE J1349 standards. Output is consistent across model years (Mazda TIS Doc. ENG-8AN1-01).
Mazda Technical Information System (TIS): Docs ENG-8AN1-01, TB-ENG-0812
Mazda EPC (Electronic Parts Catalogue): Doc. MZ-8AN1-001
VCA Type Approval Database (VCA/EMS/5678)
The Mazda 8AN1 was used across Mazda's DJ/BM platforms with transverse mounting. This engine received minor ECU calibrations for different model weights but no major mechanical revisions affecting core compatibility during its production run. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the front face of the cylinder block, near the exhaust manifold (Mazda TIS ENG-8AN1-02). The 8th digit of the VIN is 'G' for Skyactiv-G 2.0L engines. Visually, it features a black plastic intake manifold and a prominent 'SKYACTIV-G' badge on the engine cover. Differentiate from the 8AR 2.5L engine by displacement and intake manifold design. Engine mounts and ancillary components are generally consistent across compatible models, but ECU part numbers vary.
The 8AN1's primary documented service consideration is intake valve carbon buildup, with elevated incidence in vehicles subjected to frequent short trips or low-quality fuel. Mazda service data indicates this is a maintenance item rather than a design flaw, while owner reports suggest it can affect idle smoothness and fuel economy if neglected. Adherence to fuel quality recommendations and periodic inspections make this a manageable concern.
Analysis derived from Mazda technical bulletins (2012-2018) and aggregated UK MOT failure statistics (2018-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about MAZDA 8AN1.
Comprehensive technical documentation and regulatory references
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DVLA: Engine Changes & MoT
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Vehicle Certification Agency (VCA)
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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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