The Honda K24Z5 is a 2,354 cc, inline‑four naturally aspirated petrol engine produced between 2012 and 2015. It features a dual overhead camshaft (DOHC) 16‑valve layout with Honda's i — VTEC variable valve timing system. This configuration prioritizes strong low — end torque and smooth, linear power delivery, producing a peak output of 173 PS.
Fitted primarily to the European‑spec Honda CR — V (RE5) and Civic (FB2), the K24Z5 was engineered for refined, responsive perfor…
Honda
Production years 2012–2015 meet Euro 5 standards for vehicles registered from January 2011 .
The Honda K24Z5 is a 2,354 cc inline‑four naturally aspirated petrol engine engineered for compact SUVs and hatchbacks (2012-2015). It combines DOHC 16-valve architecture with i-VTEC variable valve timing to deliver a broad, accessible powerband. Designed to meet Euro 5 emissions standards, it balances responsive performance with everyday refinement.
| 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 | 173 PS (127 kW) @ 6,000 rpm | |
Torque | 22.6 kgf·m (222 Nm) @ 4,000 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 DOHC | |
Oil type | Refer to vehicle handbook / manufacturer specification | |
Dry weight | Not specified in primary sources |
The Honda K24Z5 was used across Honda's RE and FB platforms with transverse mounting and was not licensed to other manufacturers. This engine received minor platform-specific adaptations-primarily in accessory bracket positioning for the CR-V versus the Civic-and no major facelift revisions occurred during its production run, ensuring good interchangeability within its model years. All adaptations are documented in OEM technical bulletins.
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The K24Z5's primary reliability consideration is maintaining the i-VTEC system, with neglect leading to solenoid failure and loss of high-RPM power. Honda service data indicates that extended oil change intervals can accelerate wear on the VTEC oil pressure switch and rocker arms. High-mileage operation and infrequent maintenance amplify wear on the timing chain tensioner, making adherence to maintenance schedules critical.
Analysis derived from Honda technical bulletins (2012-2016) and aggregated workshop repair data. 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 K24Z5 is generally very reliable when properly maintained. Its i-VTEC system is robust but requires clean oil for optimal operation. The key to longevity is adhering to oil change intervals and addressing any VTEC-related warning lights promptly. With care, these engines can easily surpass 200,000 miles without major issues.
The most frequent issues are failing VTEC solenoids or oil pressure switches, causing the high-RPM power boost to not engage. Timing chain tensioner wear can cause noise, and valve cover gasket leaks are common on high-mileage engines. These are generally manageable with proper maintenance.
The K24Z5 was used in the fourth-generation (2012-2015) Honda CR-V (RE5 chassis) and the ninth-generation (2012-2015) Honda Civic (FB2 chassis) in certain markets. It was the larger, more powerful engine option for these models, offering more torque than the smaller 1.8L engines.
Yes, the K24Z5 is a capable tuning platform. Basic modifications like an intake, exhaust, and header can yield noticeable gains. More advanced builds involve head porting, higher compression pistons, and aggressive camshafts. The bottom end is strong enough to handle moderate power increases. ECU tuning is essential for modified setups.
Fuel economy is moderate for its size. Expect around 9.5-10.5 L/100km (30-27 mpg UK) in mixed driving for a stock CR-V or Civic. Highway cruising can achieve 7.5-8.0 L/100km (38-35 mpg UK). It strikes a good balance between power and efficiency.
Yes. The Honda K24Z5 is an interference engine. If the timing chain fails or jumps teeth, the pistons will collide with the open valves, causing severe internal damage requiring a major engine rebuild. This underscores the importance of maintaining the timing chain system, although failures are rare.
Honda specifies 0W-20 API SN/SP full synthetic oil. This low-viscosity oil is critical for achieving the engine's designed fuel economy and ensuring proper lubrication of the VTEC system. Using a higher viscosity oil can negatively impact fuel efficiency and potentially cause issues with VTEC engagement.
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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