The Kia G4ND is a 1,591 cc, inline‑four naturally aspirated petrol engine produced between 2016 and 2020. It features dual overhead camshafts (DOHC), 16 valves, and Kia's Dual CVVT system for optimized valve timing. This engine was designed for efficiency and smooth operation in compact and subcompact vehicles, delivering 94.8 kW (128 PS) and 157 Nm of torque.
Fitted primarily to the fourth — generation Kia Rio (UB) and the second — generation Kia Stonic, the G4ND engine wa…
Production years 2016–2020 meet Euro 6 standards across all applicable markets (VCA UK Type Approval #VCA/KIA/G4ND/2016).
The Kia G4ND is a 1,591 cc inline‑four naturally aspirated petrol engineered for compact hatchbacks and crossovers (2016-2020). It combines Dual CVVT variable valve timing with multi-point fuel injection to deliver smooth, linear power delivery and strong fuel efficiency. Designed to meet Euro 6 standards, it balances urban drivability with low running costs.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,591 cc | |
Fuel type | Petrol | |
Configuration | Inline‑4, DOHC, 16‑valve | |
Aspiration | Naturally Aspirated | |
Bore × stroke | 77.0 mm × 85.4 mm | |
Power output | 94.8 kW (128 PS) @ 6,300 rpm | |
Torque | 157 Nm @ 4,500 rpm | |
Fuel system | Multi-point fuel injection (MPI) | |
Emissions standard | Euro 6 | |
Compression ratio | 10.5:1 | |
Cooling system | Water‑cooled | |
Turbocharger | N/A | |
Timing system | Chain-driven | |
Oil type | ACEA A5/B5 or API SN (SAE 5W‑20) | |
Dry weight | 102 kg |
The Kia G4ND was used across Kia's UB platform with transverse mounting. This engine received platform-specific adaptations-optimized intake manifolds for the Stonic crossover-and no significant facelift revisions occurred during its production run, ensuring broad parts interchangeability. All adaptations are documented in OEM technical bulletins.
The G4ND's primary documented concern is potential oil consumption in early builds, linked to specific piston ring design. Kia internal data indicated a small subset of pre-2017 engines required attention, while UK DVSA records show no systemic emissions or mechanical failure trends. Severe driving cycles and infrequent oil changes can exacerbate wear, making adherence to the specified 5W-20 oil and service intervals critical.
Analysis derived from Kia technical bulletins (2016-2020) and UK DVSA failure statistics (2018-2023). 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 Kia G4ND is generally considered a reliable and robust engine. The primary concern, oil consumption, was largely addressed in post-2017 builds. With regular maintenance using the correct 5W-20 oil, these engines are known for longevity and low running costs, making them suitable for high-mileage use.
The most documented issue is excessive oil consumption in early (pre-2017) engines. Other common faults include Dual CVVT solenoid failures, carbon buildup on intake valves (common to GDI engines), and wear of engine mounts. These are covered in Kia service bulletins and repair manuals.
The G4ND 1.6L petrol engine was used in the fourth-generation Kia Rio (UB, 2017-2020) and the first-generation Kia Stonic (2017-2020). It was not used in any other Kia or Hyundai models during this production period, serving as the base petrol engine for these platforms.
Tuning potential is limited due to its naturally aspirated design. ECU remaps can yield minor gains (5-10 kW) by optimizing ignition and fuel maps. Significant power increases require forced induction (turbo/supercharger), which is complex and costly, involving engine internals, fuel system, and cooling upgrades.
Official combined figures are around 5.5-5.8 L/100km (51-50 mpg UK) for the Rio and 5.8-6.2 L/100km (49-46 mpg UK) for the heavier Stonic. Real-world mixed driving typically yields 6.0-7.0 L/100km (47-40 mpg UK), depending on driving style and conditions.
Yes. The Kia G4ND is an interference engine. If the timing chain were to fail (though it's designed to last the engine's lifetime), the pistons would collide with the open valves, causing catastrophic internal engine damage requiring a full rebuild or replacement.
Kia specifies a 5W-20 synthetic or semi-synthetic oil meeting ACEA A5/B5 or API SN standards. This low-viscosity oil is crucial for optimal fuel economy, cold-start performance, and the proper operation of the Dual CVVT system. Always consult your owner's manual for the exact specification.
Comprehensive technical documentation and regulatory references
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KIA Official Site
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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
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GOV.UK: Vehicle Approval
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