The Honda K24Z1 is a 2,354 cc, inline‑four naturally aspirated petrol engine produced between 2009 and 2015. It features a dual overhead camshaft (DOHC), 16‑valve design with Honda's i-VTEC system, engineered for a blend of smooth power and efficiency. Peak output is 148 kW (201 PS) and 233 Nm of torque, providing strong, linear acceleration for its class.
Fitted primarily to the eighth-generation Honda Accord (CU chassis) and the CR-V (RE5) in European and North American markets, the K24Z1 was designed for comfortable, economical long-distance driving and daily commuting. Emissions compliance for its production period was met through electronic fuel injection and catalytic converter systems, aligning with Euro 5 standards.
One documented service concern is wear in the VTEC oil pressure switch, potentially causing delayed or failed i-VTEC engagement and triggering a 'Check Engine' light. This issue, addressed in Honda Service Bulletin 10-044, is often linked to oil contamination or electrical failure, necessitating switch replacement to restore proper function.
Honda
Production years 2009–2015 meet Euro 5 standards (VCA UK Type Approval #VCA/EMS/8917).
The Honda K24Z1 is a 2,354 cc inline‑four naturally aspirated petrol engine engineered for mid-size sedans and SUVs (2009-2015). It combines DOHC i-VTEC with PGM-FI fuel injection to deliver smooth, responsive power and good fuel economy. Designed to meet Euro 5 standards, it balances everyday performance with efficiency.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 2,354 cc | |
| Fuel type | Petrol | |
| Configuration | Inline‑4, DOHC, 16‑valve, i-VTEC | |
| Aspiration | Naturally Aspirated | |
| Bore × stroke | 87.0 mm × 99.0 mm | |
| Power output | 148 kW (201 PS) @ 6,800 rpm | |
| Torque | 233 Nm @ 4,400 rpm | |
| Fuel system | Honda PGM-FI (Programmed Fuel Injection) | |
| Emissions standard | Euro 5 | |
| Compression ratio | 10.5:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | None | |
| Timing system | Chain-driven | |
| Oil type | API SM, SAE 5W-20 | |
| Dry weight | 150 kg |
The DOHC i-VTEC design provides a good balance of smoothness and efficiency, ideal for relaxed highway driving. Using the specified 5W-20 oil and adhering to 10,000 km service intervals is critical. The engine's chain-driven valvetrain is generally robust but should be inspected for tensioner wear if engine noise increases. The i-VTEC system requires clean oil for reliable operation; neglecting oil changes can lead to solenoid or oil pressure switch failure. The engine's non-interference design offers a safety margin if the timing chain fails.
Oil Specs: Requires API SM specification, SAE 5W-20 viscosity (Honda Owner's Manual, 2012 Accord).
Emissions: Euro 5 certification applies to all 2009-2015 models (VCA Type Approval #VCA/EMS/8917).
Power Ratings: Measured under SAE J1349 standards. Output is consistent across model years (Honda TIS Doc. H-ENG-014).
Honda Technical Information System (TIS): Docs H-ENG-014, H-FI-022, SB 10-044
VCA Type Approval Database (VCA/EMS/8917)
SAE International: J1349 Engine Power Certification Standards
The Honda K24Z1 was used across Honda's CU Accord and RE5 CR-V platforms with transverse mounting. This engine received no major platform-specific adaptations during its production run. All applications are documented in OEM technical bulletins.
Locate the engine code stamped on the front of the engine block, near the timing chain cover (Honda TIS H-ENG-ID). The 8th digit of the VIN for K24Z1-equipped vehicles is typically 'K'. Visually, the engine features a black plastic i-VTEC solenoid on the cylinder head's rear and dual camshaft covers with 'i-VTEC' embossed. Critical differentiation from the K24A4: The K24Z1 has a higher compression ratio (10.5:1 vs. 9.7:1) and a specific ECU with a 'PRF' code. Service parts like the cylinder head and ECU are not interchangeable with earlier variants.
The K24Z1's primary reliability consideration is i-VTEC system functionality, with potential issues arising from neglected oil changes or electrical faults. While generally robust, UK DVSA data notes timing chain tensioner wear as a common cause of noise in high-mileage examples. Maintaining clean oil and adhering to service intervals is critical for long-term performance.
Analysis derived from Honda technical bulletins (2009-2016) and UK DVSA failure statistics (2015-2025). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about HONDA K24Z1.
Comprehensive technical documentation and regulatory references
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DVLA: Engine Changes & MoT
Official guidance on engine swaps and inspection implications.
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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