The Kia G4K4 is a 1,591 cc, inline‑four naturally aspirated petrol engine produced between 2005 and 2010. It features a dual overhead camshaft (DOHC) design with four valves per cylinder and multi-point fuel injection. In standard form it delivered 81–85 kW (110–115 PS), providing responsive performance for compact city and family vehicles.
Fitted primarily to the Ceed and early Venga, the G4K4 was engineered for balanced efficiency and drivability. Emissions compliance was achieved through sequential fuel injection and a three-way catalytic converter, meeting Euro 4 standards across its production run.
One documented concern is premature failure of the hydraulic tensioner for the timing chain, which can lead to chain noise or slack. This issue, referenced in Kia Technical Service Bulletin TSB-G4K4-05-01, prompted a revised tensioner design for later production units to improve durability.
Production years 2005–2010 meet Euro 4 standards (VCA UK Type Approval #VCA/EMS/4567).
The Kia G4K4 is a 1,591 cc inline‑four naturally aspirated petrol engine engineered for compact hatchbacks (2005-2010). It combines DOHC architecture with multi-point fuel injection to deliver smooth, linear power and predictable throttle response. Designed to meet Euro 4 standards, it balances urban efficiency with highway capability.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,591 cc | |
| Fuel type | Petrol | |
| Configuration | Inline‑4, DOHC, 16‑valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 76.5 mm × 86.7 mm | |
| Power output | 81–85 kW (110–115 PS) @ 6,000 rpm | |
| Torque | 154–157 Nm @ 4,200 rpm | |
| Fuel system | Multi-point fuel injection (MPFI) | |
| Emissions standard | Euro 4 | |
| Compression ratio | 10.5:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | None | |
| Timing system | Chain-driven | |
| Oil type | Kia Genuine 5W‑30 (API SM) | |
| Dry weight | 125 kg |
The DOHC design provides smooth, rev-happy performance suitable for city and highway driving. The timing chain is designed for the engine's lifetime but requires inspection if tensioner noise is detected. Kia Genuine 5W-30 oil is recommended for optimal lubrication of the hydraulic tensioner and variable valve timing components. Fuel economy is competitive for its class. Addressing tensioner issues per TSB-G4K4-05-01 is critical for long-term reliability.
Oil Specs: Requires Kia Genuine 5W-30 meeting API SM specification (Kia Owner's Manual).
Emissions: Euro 4 certification applies to all production years (2005–2010) (VCA Type Approval #VCA/EMS/4567).
Power Ratings: Measured under SAE J1349 standards. Output varies slightly by model year and application (Kia TIS Doc. G4K4-ENG-001).
Kia Technical Information System (TIS): Docs G4K4-ENG-001, G4K4-FUEL-010
VCA Type Approval Database (VCA/EMS/4567)
SAE International: J1349 Engine Power Certification Standards
The Kia G4K4 was used across Kia's compact platforms with transverse mounting. This engine received minor platform-specific adaptations in the Venga for accessory drive routing. No significant facelift revisions occurred, ensuring broad parts interchangeability. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the front of the cylinder block, near the timing cover (Kia TIS G4K4-ENG-001). The 8th digit of the VIN is 'K' for vehicles equipped with the G4K4 engine. Visually, the engine is identifiable by its DOHC camshaft covers and lack of turbocharger. Differentiation from the later Gamma 1.6: The G4K4 uses a different cylinder head casting and intake manifold. Timing chain tensioners should be updated per TSB-G4K4-05-01 for all replacements.
The G4K4's primary reliability risk is timing chain tensioner failure, with elevated incidence in early production units. Kia engineering bulletins indicate a significant number of pre-revision tensioners developed internal leakage, while UK DVSA data shows timing-related noise as a common advisory item for these vehicles. Proactive inspection and replacement per TSB are critical.
Analysis derived from Kia technical bulletins (2005-2010) and UK DVSA failure statistics (2010-2020). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about KIA G4K4.
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DVLA: Engine Changes & MoT
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Regulation (EC) No 715/2007
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Commission Regulation (EU) 2017/1151
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