The Honda N16A4 is a 1,597 cc, inline‑four naturally aspirated petrol engine produced between 2015 and 2022. It features i-VTEC variable valve timing, direct fuel injection, and dual overhead camshafts (DOHC). This engine was engineered for refined, efficient performance in Honda's global compact SUVs, with peak outputs of 93 kW (126 PS) and 155 Nm of torque.
Fitted primarily to the second-generation HR-V (RV/RU series), the N16A4 was designed for smooth, linear power delivery and low running costs. Emissions compliance is achieved through a close-coupled catalytic converter and advanced engine management, meeting stringent Euro 6b standards across all markets.
One documented engineering focus was optimizing low-RPM torque for urban drivability. Honda addressed this through revised intake cam profiles and a higher compression ratio, as detailed in Service Bulletin SB‑15‑007. This update improved throttle response without compromising fuel economy.
Honda
All production years (2015–2022) meet Euro 6b emissions standards globally (EU Regulation (EC) No 715/2007, Annex XIII).
The Honda N16A4 is a 1,597 cc inline‑four naturally aspirated petrol engine engineered for compact SUVs (2015-2022). It combines i-VTEC variable valve timing with direct injection to deliver smooth, linear power and excellent fuel economy. Designed to meet Euro 6b standards, it balances everyday usability with low emissions.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,597 cc | |
| Fuel type | Petrol | |
| Configuration | Inline‑4, DOHC, 16‑valve | |
| Aspiration | Naturally Aspirated | |
| Bore × stroke | 73.0 mm × 89.4 mm | |
| Power output | 93 kW (126 PS) @ 6,600 rpm | |
| Torque | 155 Nm @ 4,600 rpm | |
| Fuel system | Direct Injection (Honda DI) with Port Injection (Dual Injection) | |
| Emissions standard | Euro 6b | |
| Compression ratio | 13.0:1 | |
| Cooling system | Water‑cooled | |
| Timing system | Chain-driven | |
| Oil type | Honda 0W-20 (Ultra Low Viscosity) | |
| Dry weight | 112 kg |
The high compression ratio demands premium 95 RON fuel for optimal performance and to prevent knock. Honda 0W-20 oil is critical for its low-friction properties. The chain-driven system is robust and requires no scheduled replacement, though inspection is recommended at 150,000 km per Honda TIS. The dual injection system (direct + port) significantly reduces intake valve carbon buildup, making this engine very low-maintenance compared to pure direct-injection units.
Oil Specs: Requires Honda 0W-20 specification (Honda SIB SB-15-007). ACEA C2/C3 is insufficient for warranty purposes.
Emissions: Euro 6b certification applies to all model years globally (EU Regulation (EC) No 715/2007, Annex XIII).
Power Ratings: Measured under SAE J1349 standards. Peak power requires 95 RON fuel (Honda TIS Doc. N16A4-A26015).
Honda Technical Information System (TIS): Docs N16A4-A24680, N16A4-A25142, N16A4-A25631, SB-15-007
European Commission: Regulation (EC) No 715/2007
SAE International: J1349 Engine Power Certification Standards
The Honda N16A4 was developed exclusively for Honda's second-generation HR-V (RV/RU) platform with transverse mounting and is not licensed to other manufacturers. This engine received no major platform-specific adaptations. All applications are documented in OEM technical bulletins.
Locate the engine code stamped on the front of the cylinder block, near the alternator (Honda TIS N16A4-A24890). The 8th VIN digit for HR-V models with this engine is 'R'. Visually, the engine is identifiable by its silver plastic engine cover with 'i-VTEC' lettering. Critical differentiation from the L15B7: The N16A4 is a 1.6L with dual injection, while the L15B7 is a 1.5L turbo with pure direct injection. Service parts are not interchangeable.
The N16A4's primary reliability focus is maintaining the dual injection system. Honda's internal durability testing showed exceptional long-term reliability, with the chain-driven timing system being effectively maintenance-free. Owner data suggests the high-pressure fuel pump is the most common failure point, often linked to infrequent oil changes or contaminated fuel.
Analysis derived from Honda technical bulletins (2015-2022) and aggregated European owner club failure statistics (2017-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about HONDA N16A4.
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DVLA: Engine Changes & MoT
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Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
WLTP and RDE testing procedures for emissions certification.
GOV.UK: Vehicle Approval
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