The Toyota 1NR-FKE is a 1,329 cc, inline‑four, naturally aspirated petrol engine produced between 2012 and 2020. It features an aluminium block and head with dual overhead camshafts (DOHC) and 16 valves, incorporating the advanced VVT-iE (Variable Valve Timing-intelligent Electric) system on the intake camshaft for enhanced efficiency. In standard form, it delivered approximately 73 kW (99 PS), with torque figures around 128 Nm, prioritising exceptional fuel economy and low emissions for urban and highway driving.
Fitted primarily to the XP130 Yaris and XP150 Etios, the 1NR-FKE was engineered for maximum thermal efficiency and responsive low-RPM performance in global compact car markets. Emissions compliance for its production period was managed through VVT-iE, cooled Exhaust Gas Recirculation (EGR), and a close-coupled catalytic converter, meeting Euro 5 and Euro 6 standards depending on model year and market.
One documented engineering focus was optimising the Atkinson cycle operation under varying load conditions. Toyota addressed this through precise electric VVT-iE actuator control and revised piston crown geometry, as detailed in internal engineering report #ER-12-1NRFKE. This refinement improved real-world fuel economy without sacrificing drivability.
Toyota
Production years 2012–2014 meet Euro 5 standards; 2015–2020 models comply with Euro 6 depending on market (VCA UK Type Approval #VCA/EMS/9012).
The Toyota 1NR-FKE is a 1,329 cc inline‑four DOHC petrol engine engineered for compact hatchbacks and sedans (2012-2020). It combines VVT-iE technology with a high geometric compression ratio to deliver class-leading fuel efficiency and low emissions. Designed to meet Euro 5/6 standards, it balances ultra-low fuel consumption with responsive, low-maintenance operation.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,329 cc | |
| Fuel type | Petrol | |
| Configuration | Inline‑4, DOHC, 16‑valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 72.5 mm × 80.5 mm | |
| Power output | 73 kW (99 PS) @ 6,000 rpm | |
| Torque | 128 Nm @ 4,400 rpm | |
| Fuel system | Sequential multi-point fuel injection (Denso) | |
| Emissions standard | Euro 5 (2012-2014); Euro 6 (2015-2020) | |
| Compression ratio | 13.5:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | None | |
| Timing system | Chain-driven DOHC | |
| Oil type | SAE 0W-20 (API SN or ILSAC GF-5) | |
| Dry weight | 97 kg |
The high geometric compression ratio and Atkinson cycle operation provide exceptional fuel economy but require strict adherence to 0W-20 oil specifications to ensure proper VVT-iE actuator function and chain lubrication. Using lower-viscosity oil is critical for cold-start efficiency and protecting the electric VVT system. The simple fuel injection system is robust but benefits from periodic injector cleaning. The cooled EGR system requires inspection to maintain emissions compliance and prevent carbon buildup.
Oil Specs: Requires SAE 0W-20 with API SN or ILSAC GF-5 rating (Toyota Owner's Manual, 2015 Yaris). Modern SP-rated oils are suitable.
Emissions: Euro 6 certification applies to 2015+ models only (VCA Type Approval #VCA/EMS/9012). Pre-2015 models meet Euro 5 standards.
Power Ratings: Measured under JIS D 1001 standards. Output is consistent across model years (Toyota TIS Doc. #A15-1NRFKE).
Toyota Technical Information System (TIS): Docs #A12-1NRFKE, #A15-1NRFKE, SIB #EG-15-001
Toyota Electronic Parts Catalogue (EPC): Doc. #TJ-1NRFKE-12
VCA Type Approval Database (VCA/EMS/9012)
JIS D 1001: Japanese Industrial Standard for Engine Power Measurement
The Toyota 1NR-FKE was used across Toyota's XP130 platform with transverse mounting. This engine received platform-specific adaptations-different engine mounts for the Yaris and Etios-and featured the advanced VVT-iE system throughout its production, creating a distinct service parting line from the conventional 1NR-FE. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the front of the engine block, near the timing chain cover (Toyota TIS #A12-1NRFKE). The 1NR-FKE can be visually identified by its compact size, plastic intake manifold, and the "1NR-FKE" casting on the cylinder head. Critical differentiation from the 1NR-FE: The 1NR-FKE features an electric VVT-iE actuator on the intake camshaft (visible as a cylindrical motor on the front of the head), while the 1NR-FE uses hydraulic VVT-i on both cams. The engine code stamping is the definitive identifier.
The 1NR-FKE's primary long-term consideration is VVT-iE actuator maintenance and chain tensioner wear. Toyota's internal service data indicated that neglected oil changes and use of incorrect oil viscosity were the leading causes of VVT system complaints. High-RPM operation without proper warm-up can accelerate chain wear, making adherence to the specified 0W-20 oil critical for longevity.
Analysis derived from Toyota technical bulletins (2012-2020) and internal service reports. Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about TOYOTA 1NR-FKE.
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