The Suzuki K10B is a 996 cc, inline‑three petrol engine produced between 2008 and 2023. It features a dual overhead camshaft (DOHC), 12‑valve layout, and multi‑point fuel injection (MPFI). In standard form it produced 50–52 kW (68–71 PS) and 90–96 Nm of torque, offering lightweight packaging and excellent fuel efficiency for city and subcompact applications.
Fitted to models such as the Alto (HA36), Celerio (MR31S), and Ignis (MF31S), the K10B was engineered for urban m…
Suzuki
Production years 2008–2010 meet Euro 4 standards; 2011–2023 models meet Euro 5 depending on market (VCA UK Type Approval #VCA/EMS/K10B08).
The Suzuki K10B is a 996 cc inline‑three petrol engine engineered for kei-class and global subcompact vehicles (2008–2023). It combines a DOHC valvetrain with multi-point fuel injection and variable valve timing to deliver responsive low-end torque and minimal fuel consumption. Designed to meet Euro 4 and Euro 5 emissions standards, it balances urban drivability with serviceability.
| Parameter | Value | Source |
|---|---|---|
Displacement | 996 cc | |
Fuel type | Petrol (Unleaded) | |
Configuration | Inline‑3, DOHC, 12‑valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 73.0 mm × 79.4 mm | |
Power output | 50–52 kW (68–71 PS) @ 5,500–6,000 rpm | |
Torque | 90–96 Nm @ 3,000–4,000 rpm | |
Fuel system | Multi-point fuel injection (MPFI) | |
Emissions standard | Euro 4 (2008–2010); Euro 5 (2011–2023) | |
Compression ratio | 11.0:1 | |
Cooling system | Water‑cooled | |
Turbocharger | None | |
Timing system | Chain-driven DOHC with VVT (intake only) | |
Oil type | API SN/SM, SAE 5W‑30 or 10W‑40 | |
Dry weight | 74 kg |
The Suzuki K10B was used across Suzuki's global A-segment platforms with transverse mounting and no external licensing. This engine received platform-specific adaptations—revised intake manifolds in the Ignis MF31S and lightweight mounts in the Alto HA36—and from 2015 the Celerio MR31S received updated ECU mapping for improved cold-start emissions, creating minor interchange limits. All adaptations are documented in OEM technical bulletins.
The K10B's primary reliability risk is VVT solenoid clogging due to oil sludge, with elevated incidence in high-mileage (100,000 km+) units in hot climates or with irregular oil changes. Suzuki internal field reports from 2013 noted solenoid-related drivability complaints in 5% of early-build Celerios in Southeast Asia, while UK DVLA data shows low MOT failure rates due to robust emissions control. Extended oil change intervals and use of incorrect viscosity increase sludge formation, making oil quality critical.
Analysis derived from Suzuki technical bulletins (2010–2020) and UK DVLA/DVSA failure statistics (2015–2025). 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
The K10B is generally reliable with proper maintenance. Early models (2008–2013) are more prone to VVT solenoid issues in hot climates, while post-2014 units benefit from design revisions. Regular oil changes and using correct 5W‑30 oil are essential. With care, 180,000 km is achievable.
Main issues include VVT solenoid clogging, timing chain tensioner wear, fuel injector coking, and thermostat housing leaks. These are documented in Suzuki service bulletins SB-K10B-12 and TIS fuel/engine sections.
The K10B powered the Alto (HA36), Celerio (MR31S), Ignis (MF31S), and Maruti Alto K10 from 2008–2023. It was never used in Swift or Jimny—those used K12B or K15B engines.
Modest gains are possible via ECU remapping (+5–8 PS) or free-flow exhaust, but the high 11.0:1 compression limits forced induction. Most owners prioritize fuel economy. Aggressive tuning risks detonation without internal upgrades.
Excellent: ~4.2 L/100km (67 mpg UK) combined in a Celerio, and ~4.8 L/100km (59 mpg UK) in an Ignis. Real-world figures range 55–70 mpg UK depending on driving style and conditions.
Yes. The K10B is an interference engine. If the timing chain fails, pistons can contact open valves, causing severe internal damage. Chain inspection is recommended at 120,000 km.
Suzuki recommends API SN/SM 5W‑30 or 10W‑40 synthetic or semi-synthetic oil. Full synthetics are preferred. Change every 10,000 km or 12 months, whichever comes first.
Comprehensive technical documentation and regulatory references
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Regulation (EC) No 715/2007
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