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 America…
Honda
Production years 2009–2015 meet Euro 5 standards .
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 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.
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Analysis derived from manufacturer technical service bulletins and industry workshop records. Repair procedures should follow manufacturer guidelines.
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Yes, the K24Z1 is known for its excellent long-term reliability and durability when properly maintained. Its robust DOHC i-VTEC design and non-interference valvetrain contribute to its longevity. The main areas to monitor are the i-VTEC oil pressure switch and the timing chain tensioner, both of which are well-documented and straightforward to replace.
The most common issues are i-VTEC oil pressure switch failure (preventing i-VTEC engagement), timing chain tensioner wear causing noise, VTC actuator rattle on cold start, and valve cover gasket leaks. These are well-documented in Honda service literature and are generally inexpensive and easy to fix.
The K24Z1 engine was used in the eighth-generation Honda Accord (CU chassis, 2009-2015) and the third-generation Honda CR-V (RE5, 2009-2015), specifically in the 2.4i trim level for both models in European and North American markets.
Yes, the K24Z1 responds well to basic tuning. Common modifications include an intake, exhaust, and ECU remap, which can yield modest power gains. More advanced builds can involve camshafts and head work. Its i-VTEC system provides a good foundation for performance, though it's not as tunable as some of Honda's high-revving engines.
Fuel economy is very good for a 2.4L engine. In a typical Accord sedan, expect around 9.0-10.0 L/100km (28-31 mpg UK) in combined driving. Highway cruising can see figures as low as 7.0 L/100km (40 mpg UK), depending on driving style and condition.
No. The Honda K24Z1 is a non-interference engine. This means if the timing chain fails, the pistons will not collide with the valves, preventing catastrophic internal engine damage. This is a significant safety feature for long-term ownership.
Honda originally specified API SM grade oil, typically SAE 5W-20 for the K24Z1. Modern high-quality synthetic 5W-20 oils that meet or exceed these specifications are suitable and offer better protection, especially for the i-VTEC system.
Comprehensive technical documentation and regulatory references
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Regulatory Stability
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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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