The Suzuki J24B is a 2,393 cc, inline‑four naturally aspirated petrol engine produced between 2009 and 2019. It features a dual overhead camshaft (DOHC), 16‑valve layout with multi‑point fuel injection (MPFI), delivering 118–121 kW (160–165 PS) and 220–230 Nm of torque. Its cast‑iron block and aluminium head provide durability for midsize SUV applications.
Fitted primarily to the Suzuki Grand Vitara (J20/J24) and Kizashi, the J24B was engineered for smooth highway c…
Suzuki
Production years 2009–2012 meet Euro 4 standards; 2013–2019 models comply with Euro 5 depending on market (VCA UK Type Approval #VCA/EMS/6022).
The Suzuki J24B is a 2,393 cc inline‑four naturally aspirated petrol engine engineered for midsize SUVs and sedans (2009–2019). It combines DOHC valve actuation with multi‑point fuel injection to deliver linear power delivery and highway refinement. Designed to meet Euro 4 and Euro 5 emissions standards, it balances torque output with regulatory compliance.
| Parameter | Value | Source |
|---|---|---|
Displacement | 2,393 cc | |
Fuel type | Petrol (Unleaded) | |
Configuration | Inline‑4, DOHC, 16‑valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 86.0 mm × 103.0 mm | |
Power output | 118–121 kW (160–165 PS) @ 5,500 rpm | |
Torque | 220–230 Nm @ 4,000 rpm | |
Fuel system | Multi‑point fuel injection (Denso) | |
Emissions standard | Euro 4 (2009–2012); Euro 5 (2013–2019) | |
Compression ratio | 9.7:1 | |
Cooling system | Water‑cooled | |
Turbocharger | None | |
Timing system | Chain-driven DOHC | |
Oil type | API SM/SN, SAE 5W‑30 | |
Dry weight | 142 kg |
The Suzuki J24B was used across Suzuki's Grand Vitara/Kizashi platforms with longitudinal mounting and no external licensing. This engine received platform-specific adaptations-reinforced mounts in the Grand Vitara J24 and modified intake manifolds in the Kizashi-and from 2013 the updated PCV system improved oil aeration control, creating minor interchange limits. All adaptations are documented in OEM technical bulletins.
The J24B's primary reliability risk is oil sludge formation under thermal stress or neglected maintenance, with elevated incidence in desert climates or high‑load use. Suzuki internal field reports from 2014 noted increased bearing wear in vehicles with >100,000 km and oil change intervals exceeding 10,000 km, while UK DVSA MOT data shows emissions test failures linked to EGR valve sticking in urban-driven examples. Oil quality and PCV function make sludge prevention critical.
Analysis derived from Suzuki technical bulletins (2011–2016) and UK DVSA failure statistics (2015–2023). 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 J24B is robust and smooth-running when oil maintenance is observed, but early versions (2009–2012) are prone to sludge under high-heat or infrequent oil changes. Post-2013 models with updated PCV systems are significantly more resilient. Using API SM/SN 5W‑30 oil and changing it every 7,500–10,000 km greatly extends service life.
Top issues include oil sludge formation (especially pre-2013), EGR valve coking, timing chain stretch due to oil degradation, and water pump failure after 120,000 km. These are documented in Suzuki TSBs and field service reports from the 2010s.
The J24B powered the Suzuki Grand Vitara J24 (2009–2019) and Kizashi (2009–2016) globally. It was designed for midsize SUVs and sedans and was never used in commercial vans or kei-class vehicles.
Modest gains are possible via intake/exhaust upgrades and ECU remapping, but the 9.7:1 compression and naturally aspirated design limit potential. Most owners prioritize reliability. Forced induction is not supported by OEM documentation and risks head gasket integrity.
Typical consumption is 9.0–10.5 L/100km (27–31 mpg UK) in mixed urban use. Highway cruising can achieve ~7.5 L/100km (38 mpg UK). Economy degrades with EGR faults or aggressive driving.
Yes. The J24B is an interference engine. If the timing chain fails or jumps, pistons can contact open valves, causing severe internal damage. Prompt attention to chain rattle is essential.
Suzuki specifies API SM or SN grade oil, typically SAE 5W‑30. Synthetic or synthetic-blend oils are recommended; oil changes every 7,500–10,000 km are critical to prevent sludge.
Comprehensive technical documentation and regulatory references
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Regulation (EC) No 715/2007
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