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…
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 | Refer to vehicle handbook / manufacturer specification | |
Dry weight | 112 kg |
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.
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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.
The most common questions about engine codes, what they mean, how to find them and how this database works
Yes, the N16A4 is considered a very reliable and robust engine. Its chain-driven timing system is designed to last the life of the vehicle, and the dual injection system minimizes carbon buildup. The main concerns are the high-pressure fuel pump and VTEC solenoid, which are common and inexpensive fixes.
The most frequent issues are high-pressure fuel pump (HPFP) failures, VTEC solenoid failures, and PCV valve clogging. In very cold climates with frequent short trips, oil dilution can also be a concern. All are well-documented in Honda service information and are generally inexpensive to repair.
The N16A4 engine was used exclusively in the second-generation Honda HR-V (model codes RV and RU) from 2015 to 2022. It was not used in any other Honda or Acura vehicle globally. It is the 1.6-liter naturally aspirated variant for markets where the 1.5L turbo was not offered.
The N16A4 has limited tuning potential due to its naturally aspirated design and high compression ratio. ECU remaps typically yield only 5-8 PS. More significant power gains would require forced induction (turbo/supercharger), which is a complex and expensive modification not commonly performed on this engine.
Official combined figures are around 5.9 L/100km, but real-world economy varies. Expect 7-8 L/100km in city driving and 5-6 L/100km on a steady highway cruise. Using 95 RON fuel is essential for achieving the advertised economy figures and optimal engine performance.
Yes. The N16A4 is an interference engine. If the timing chain were to fail (which is extremely rare), the pistons would collide with the open valves, causing catastrophic internal engine damage. Fortunately, the timing chain is designed to last the life of the engine.
Honda mandates the use of 0W-20 synthetic oil meeting their specific Ultra Low Viscosity (ULV) standard. This is critical for protecting engine components and ensuring optimal fuel economy. Using a thicker oil can lead to increased wear and potential VTEC system issues.
Comprehensive technical documentation and regulatory references
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Regulatory Stability
EU regulations are referenced using CELEX identifiers for long-term stability.
EUR-Lex
EU emissions and type-approval regulations (e.g., CELEX:32007R0715, CELEX:32017R1151).
GOV.UK: Vehicle Approval & V5C
UK vehicle approval processes, import rules, and MoT guidance.
DVLA: Engine Changes & MoT
Official guidance on engine swaps and inspection implications.
Vehicle Certification Agency (VCA)
UK type-approval authority for automotive products.
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
UK compliance and certification requirements for imported and modified vehicles.
VCA Certification Portal
Type-approval guidance and documentation.
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