The Honda L15B7 is a 1,498 cc, inline‑three turbocharged petrol engine produced between 2015 and 2022. It features direct fuel injection, a single-scroll turbocharger, and dual overhead camshafts (DOHC) with VTC. In Civic applications, it delivers 134 kW (182 PS) and 240 Nm of torque, with VTC enabling optimal valve timing for responsive power delivery across the rev range.
Fitted primarily to the FK2/FK8 Civic Type R and FK7 Civic Hatchback/Sedan, the L15B7 was engineered for spirited performance and daily usability. Emissions compliance was achieved through gasoline direct injection (GDI) and a close-coupled catalytic converter, meeting Euro 6 standards from launch.
One documented concern is carbon buildup on intake valves, a common trait of direct-injection engines, noted in Honda Service Bulletin A17-038. This occurs due to the absence of fuel washing over the valves, potentially leading to rough idle or reduced performance. Honda addressed this with revised PCV systems in later production.
Honda
Production years 2015–2022 meet Euro 6 standards across all applicable markets (EU Regulation (EC) No 715/2007).
The Honda L15B7 is a 1,498 cc inline‑three turbocharged petrol engineered for compact performance models (2015-2022). It combines direct injection with a single-scroll turbocharger to deliver strong mid-range torque and high-revving character. Designed to meet Euro 6 standards, it balances track-ready performance with everyday drivability.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,498 cc | |
| Fuel type | Petrol | |
| Configuration | Inline‑3, DOHC, 12‑valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 73.0 mm × 89.4 mm | |
| Power output | 134 kW (182 PS) @ 6,000 rpm | |
| Torque | 240 Nm @ 1,700–4,500 rpm | |
| Fuel system | Direct Injection (DI) | |
| Emissions standard | Euro 6 | |
| Compression ratio | 10.6:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Single-scroll turbo (MHI TD04) | |
| Timing system | Chain-driven | |
| Oil type | Honda 0W-20 (or 5W-30) | |
| Dry weight | 93 kg |
The turbocharged setup provides strong, linear power ideal for overtaking but requires premium unleaded (RON 95+) for optimal performance and to prevent knock. The direct injection system necessitates periodic intake valve cleaning (every 60,000–80,000 km) to mitigate carbon buildup, as per Honda SIB A17-038. Using the specified 0W-20 oil ensures proper lubrication of the turbo bearings and chain system. The engine's compact design aids packaging but can make certain repairs more labor-intensive.
Oil Specs: Requires Honda 0W-20 specification for optimal fuel economy and turbo protection (Honda Owner's Manual). 5W-30 is an acceptable alternative.
Emissions: Euro 6 certification applies to all 2015–2022 models (EU Regulation (EC) No 715/2007). No market-specific variations.
Power Ratings: Measured under SAE J1349 standards. Peak output requires 95 RON fuel (Honda TIS Doc. L15B7-PERF).
Honda Technical Information System (TIS): Docs L15B7-SPEC, L15B7-TURBO
EU Regulation (EC) No 715/2007
Honda Service Information Bulletin (SIB) A17-038
SAE International: J1349 Engine Power Certification Standards
The Honda L15B7 was used across Honda's FK7 platform with transverse mounting and was exclusive to Honda. This engine received platform-specific adaptations-reinforced engine mounts in the Type R and a different intake manifold in the Sedan-and from 2018 the facelifted FK8 Type R received minor ECU and cooling revisions. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the front of the engine block, just below the exhaust manifold (Honda TIS L15B7-ID). The 8th VIN digit for L15B7-equipped Civics is typically 'F' or 'R' (for Type R). The FK8 Type R can be visually identified by its red valve cover, while FK7 models use a black or silver cover. Critical differentiation from the non-turbo L15B: The L15B7 has a visible turbocharger and intercooler piping. Service parts for the FK2/FK8 Type R, such as mounts and turbos, are often not compatible with standard FK7 models due to higher performance specifications (Honda SIB FK8-UPG).
The L15B7's primary reliability consideration is carbon buildup on intake valves, a trait of its direct injection system. Honda service data indicates this is a common maintenance item rather than a failure, while owner reports frequently cite oil dilution in very cold climates with short trips. Consistent use of correct fuel and oil, along with periodic cleaning, mitigates most long-term concerns.
Analysis derived from Honda technical bulletins (2015-2022) and aggregated owner-reported data (2016-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about HONDA L15B7.
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