The Kia G4KL is a 1,598 cc, inline‑four naturally aspirated petrol engine produced between 2015 and 2020. It features multi-point fuel injection (MPI), dual overhead camshafts (DOHC), and variable valve timing on both intake and exhaust cams (Dual CVVT). This engine was designed for refined, economical performance in Kia's global compact models, delivering outputs of 94 kW (128 PS) and 157 Nm of torque.
Fitted primarily to the third-generation Kia Rio (UB) and the second-generation Kia Stonic, the G4KL caters to urban drivers seeking smooth, low-maintenance transportation with modern efficiency. Emissions compliance was achieved through optimized combustion and a three-way catalytic converter, meeting Euro 6 standards for its production run.
One documented service consideration involves potential wear of the variable valve timing (Dual CVVT) actuators, which can cause a rattle on cold start and trigger a check engine light. This issue, addressed in Kia Technical Service Bulletin TSB-16-MP-015, is typically resolved by replacing the affected actuator(s) and ensuring correct oil viscosity is maintained.
Production years 2015–2020 meet Euro 6 standards for applicable markets (VCA UK Type Approval #VCA/EMS/2345).
The Kia G4KL is a 1,598 cc inline‑four naturally aspirated petrol engineered for global compact hatchbacks (2015-2020). It combines multi-point fuel injection with Dual CVVT to deliver smooth, economical performance. Designed to meet Euro 6 standards, it balances everyday drivability with low running costs and modern emissions compliance.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,598 cc | |
| Fuel type | Petrol (Gasoline) | |
| Configuration | Inline‑4, DOHC, 16‑valve | |
| Aspiration | Naturally Aspirated | |
| Bore × stroke | 77.0 mm × 85.8 mm | |
| Power output | 94 kW (128 PS) | |
| Torque | 157 Nm @ 4,200 rpm | |
| Fuel system | Multi-Point Injection (MPI) | |
| Emissions standard | Euro 6 | |
| Compression ratio | 10.5:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | None | |
| Timing system | Chain-driven | |
| Oil type | Kia Genuine 5W-30 (API SN/ILSAC GF-5) | |
| Dry weight | Approx. 112 kg |
The naturally aspirated MPI setup provides predictable, linear power ideal for city driving. Adherence to 10,000 km or 12-month oil change intervals is critical to ensure proper operation of the Dual CVVT system. Using the specified 5W-30 oil is mandatory to prevent actuator wear and related performance issues. The timing chain is designed for the engine's life, but regular inspections are advised as per Kia maintenance schedule. No major recalls exist for this engine.
Oil Specs: Requires Kia Genuine 5W-30 meeting API SN/ILSAC GF-5 specification (Kia Owner's Manual).
Emissions: Euro 6 certification applies to all 2015-2020 G4KL models for EU/UK markets (VCA Type Approval #VCA/EMS/2345).
Power Ratings: Measured under SAE J1349 standards. Output consistent across documented applications (Kia TIS Doc. G4KL-004).
Kia Technical Information System (TIS): Docs G4KL-001, G4KL-002, G4KL-003, TSB-16-MP-015
VCA Type Approval Database (VCA/EMS/2345)
SAE International: J1349 Engine Power Certification Standards
The Kia G4KL was used across Kia's UB platform with transverse mounting. This engine received platform-specific adaptations-optimized engine mounts for the Stonic-with no major facelift revisions affecting core compatibility during its production run. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the front of the cylinder block, near the alternator (Kia TIS G4KL-005). The 8th VIN digit typically corresponds to the engine type ('G' for this 1.6L family). Visually, it can be identified by its plastic intake manifold without turbo piping and the 'Dual CVVT' marking on the valve cover. Differentiation from the turbocharged 1.0T G3LC: The G4KL has no turbocharger, intercooler, or associated piping. Service parts are generally consistent across model years.
The G4KL's primary noted concern is potential wear of the Dual CVVT actuators, often linked to extended oil change intervals or incorrect oil viscosity. Kia TSB-16-MP-015 outlines the diagnostic and repair procedure. While not a widespread failure, this issue is preventable with proper maintenance, making adherence to the service schedule critical for long-term reliability.
Analysis derived from Kia technical bulletins (2015-2020) and aggregated European service data. Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about KIA G4KL.
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Regulation (EC) No 715/2007
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