The Honda R20Z2 is a 1,997 cc, inline‑four naturally aspirated petrol engine produced between 2012 and 2015. It features a single overhead camshaft (SOHC), 16 valves, and Honda's i-VTEC system for variable valve timing and lift. This iteration delivered 114 kW (155 PS) and 190 Nm of torque, with i-VTEC optimizing the powerband for smooth, linear acceleration.
Fitted exclusively to the ninth-generation Civic (FB/FG) for European and global markets, the R20Z2 was engineered for refined, economical motoring with adequate power for highway merging and cruising. Emissions compliance was achieved through precise fuel metering and a three-way catalytic converter, meeting stringent Euro 5 standards.
One documented engineering refinement addressed potential for minor oil consumption in early production, resolved in Honda Service Bulletin A12-015. The bulletin details a revised piston ring coating and groove design to improve sealing, implemented in engines produced after January 2013.
Production from 2012–2015 meets Euro 5 emissions standards globally (EU Regulation (EC) No 715/2007, as amended).
The Honda R20Z2 is a 1,997 cc inline‑four naturally aspirated petrol engine engineered for compact sedans and hatchbacks (2012-2015). It combines SOHC architecture with i-VTEC variable valve timing to deliver smooth, predictable power for efficient daily commuting. Designed to meet Euro 5 standards, it prioritizes low emissions and fuel economy for urban and highway driving.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,997 cc | |
| Fuel type | Petrol | |
| Configuration | Inline‑4, SOHC, 16‑valve | |
| Aspiration | Naturally Aspirated | |
| Bore × stroke | 81.0 mm × 97.0 mm | |
| Power output | 114 kW (155 PS) | |
| Torque | 190 Nm @ 4,300 rpm | |
| Fuel system | PGM-FI (Programmed Fuel Injection) | |
| Emissions standard | Euro 5 | |
| Compression ratio | 10.6:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | None | |
| Timing system | Chain-driven | |
| Oil type | Honda 5W-30 (spec. HTO-06) | |
| Dry weight | 127 kg |
The i-VTEC system provides smooth, linear power ideal for commuting but requires the specified 5W-30 HTO-06 oil for optimal VTEC solenoid and lifter operation. The timing chain is designed for life but relies on correct oil specification and level. Engines produced before January 2013 may exhibit minor oil consumption; this was addressed by a piston ring revision per Honda SIB A12-015. Regular oil changes are critical for long-term reliability.
Oil Specs: Requires Honda 5W-30 (spec. HTO-06) for i-VTEC system compatibility and optimal lubrication (Honda Owner's Manual).
Emissions: Meets Euro 5 standards for all 2012-2015 production (EU Regulation (EC) No 715/2007, as amended).
Power Ratings: Measured under SAE J1349 standards. Output is consistent across model years (Honda TIS Doc. R20Z2-A26015).
Honda Technical Information System (TIS): Docs R20Z2-A24680, R20Z2-A25142
EU Regulation (EC) No 715/2007 (Emissions)
Honda Service Information Bulletin (SIB A12-015)
SAE International: J1349 Engine Power Certification Standards
The Honda R20Z2 was developed for Honda's Global Compact platform with transverse mounting. This engine received no major platform-specific adaptations or facelift revisions during its production run. All applications are documented in OEM technical bulletins.
Locate the engine code stamped on the front of the cylinder block, below the exhaust manifold (Honda TIS R20Z2-A24890). The 8th VIN digit for R20Z2-equipped Civic models is 'R'. Visually, it can be identified by its SOHC valve cover (single camshaft) and the '2.0 i-VTEC' badge on the vehicle. Critical differentiation from the R20A1: The R20Z2 has a slightly different ECU calibration and revised piston rings; externally, they are nearly identical. Service parts, particularly pistons and rings, are specific to the R20Z2 and model year.
The R20Z2's primary reliability consideration is potential for minor oil consumption in early builds, with Honda's internal data indicating a measurable improvement after the January 2013 update. UK DVSA MOT statistics show no significant pattern of engine-related failures for this model, suggesting overall robustness. Adherence to the correct oil specification and change intervals is critical for long-term health.
Analysis derived from Honda technical bulletins (2012-2015) and UK DVSA failure statistics (2016-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about HONDA R20Z2.
Comprehensive technical documentation and regulatory references
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