The Honda U24A is a 2,356 cc, inline‑four turbocharged petrol engine produced from 2021 to present. It features a dual overhead camshaft (DOHC) design with VTEC and direct fuel injection, delivering 200 kW (272 PS) and 350 Nm of torque. This powerplant combines strong mid-range pull with high-RPM responsiveness for dynamic everyday driving.
Fitted exclusively to the eleventh-generation Honda Civic Type R (FL5), the U24A was engineered for track-capable performance with road-going refinement. Emissions compliance is achieved through a gasoline particulate filter (GPF) and precise fuel metering, meeting Euro 6d standards across its production run.
One documented concern is potential heat management under sustained track use, noted in Honda Service Bulletin A22-015. This is often linked to thermal stress on the turbocharger and exhaust manifold. Honda addressed this with revised heat shielding and updated ECU cooling strategies in later production batches.
Honda
All production years 2021–Present meet Euro 6d standards (VCA UK Type Approval #VCA/EMS/5684).
The Honda U24A is a 2,356 cc inline‑four turbocharged petrol engine engineered for high-performance hatchbacks (2021-Present). It combines direct injection with VTEC and a single-scroll turbocharger to deliver a broad, flat torque curve. Designed to meet Euro 6d standards, it balances aggressive performance with stringent emissions compliance.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 2,356 cc | |
| Fuel type | Petrol | |
| Configuration | Inline‑4, DOHC, 16‑valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 87.0 mm × 99.0 mm | |
| Power output | 200 kW (272 PS) @ 6,500 rpm | |
| Torque | 350 Nm @ 2,600–4,000 rpm | |
| Fuel system | Direct injection (Honda DI) | |
| Emissions standard | Euro 6d | |
| Compression ratio | 10.6:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Single-scroll turbo (MHI TD05) | |
| Timing system | Chain-driven | |
| Oil type | Honda 0W-20 | |
| Dry weight | 145 kg |
The VTEC system provides a surge of power at higher RPMs but requires premium unleaded fuel (RON 98) to prevent knock and protect the turbocharger. Honda 0W-20 synthetic oil is critical for optimal VTEC operation and turbo bearing lubrication. Extended high-RPM operation, common in track use, can accelerate thermal stress; allowing the engine to idle for 1-2 minutes after hard driving is recommended. The timing chain is robust but should be inspected if unusual noise is present. The GPF requires regular highway driving to regenerate properly.
Oil Specs: Requires Honda 0W-20 specification for optimal performance (Honda Owner's Manual FL5). No alternative viscosity is officially recommended.
Emissions: Euro 6d certification applies to all 2021–Present models (VCA Type Approval #VCA/EMS/5684). No market-specific variations.
Power Ratings: Measured under SAE J1349 standards. Peak output requires RON 98 fuel (Honda TIS Doc. U24A-003).
Honda Technical Information System (TIS): Docs U24A-001, U24A-002, U24A-003
VCA Type Approval Database (VCA/EMS/5684)
SAE International: J1349 Engine Power Certification Standards
The Honda U24A is used exclusively in Honda's FL5 platform with transverse mounting. This engine was developed specifically for the Civic Type R and features unique components-reinforced engine mounts, a larger intercooler, and a bespoke exhaust-not found on other Honda engines. No licensing to other manufacturers has been documented. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the front of the cylinder block, below the exhaust manifold (Honda TIS U24A-004). The 8th VIN digit for FL5 Type R is 'R'. Visually, the U24A has a red valve cover and a large front-mounted intercooler. Critical differentiation from the K20C1: The U24A is a 2.4L engine with a different bore/stroke, revised turbocharger, and updated ECU calibration. Service parts, particularly for the turbo and exhaust, are not interchangeable with the K20C1 without modification (Honda SIB A22-015).
The U24A's primary reliability risk is thermal stress under sustained high-load conditions, with incidence highest in track-driven FL5 Type Rs. Honda internal service data indicates that adherence to cooldown procedures and the 0W-20 specification is critical. Sustained high-RPM operation and infrequent oil checks make adherence to the 10,000 km service intervals non-negotiable for long-term health.
Analysis derived from Honda technical bulletins (2021-Present) and preliminary UK DVSA failure statistics (2022-2024). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about HONDA U24A.
Comprehensive technical documentation and regulatory references
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HONDA Official Site
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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
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VCA Certification Portal
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