The Kia G4JP is a 1,497 cc, inline‑four turbocharged petrol engine produced from 2020 to present. It features an aluminum block and head, dual overhead camshafts (DOHC), and 16 valves with Kia's Smartstream technology, including continuously variable valve duration (CVVD) and gasoline direct injection. In standard form it delivers 148 kW (201 PS) and 253 Nm of torque, offering a blend of performance and efficiency.
Fitted primarily to the fourth-generation Kia Sorento (MQ4) and second-generation Kia Carnival (KA4), the G4JP was engineered for responsive power delivery and refined highway cruising in midsize SUVs and MPVs. Emissions compliance is achieved through advanced combustion control and meets stringent Euro 6d standards.
One documented concern involves potential failure of the high-pressure fuel pump, which can lead to drivability issues or no-start conditions. This issue, referenced in Kia Technical Service Bulletin TSB-22-EN-015, is often linked to extended service intervals or fuel contamination.
Production years 2020–Present meet Euro 6d standards across all applicable markets (VCA UK Type Approval #VCA/KIA/G4JP/2020).
The Kia G4JP is a 1,497 cc inline‑four turbocharged petrol engine engineered for midsize SUVs and MPVs (2020-Present). It combines CVVD variable valve duration with gasoline direct injection and a twin-scroll turbocharger to deliver strong, linear power and enhanced fuel efficiency. Designed to meet Euro 6d standards, it balances spirited performance with modern emissions control.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,497 cc | |
| Fuel type | Petrol | |
| Configuration | Inline‑4, DOHC, 16‑valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 77.0 mm × 80.6 mm | |
| Power output | 148 kW (201 PS) @ 6,000 rpm | |
| Torque | 253 Nm @ 1,500–4,000 rpm | |
| Fuel system | Gasoline Direct Injection (GDI) | |
| Emissions standard | Euro 6d | |
| Compression ratio | 10.5:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Twin-scroll turbocharger | |
| Timing system | Chain-driven | |
| Oil type | Kia Genuine 0W‑20 (API SP/ILSAC GF-6) | |
| Dry weight | 120 kg |
The CVVD system provides exceptional throttle response and broad torque delivery but requires strict adherence to 15,000 km or 12-month oil change intervals to prevent carbon buildup and VVT actuator issues. Kia Genuine 0W-20 oil is critical for maintaining hydraulic actuator function and chain tensioner health. Extended oil change intervals can accelerate deposit formation. The high-pressure fuel pump is sensitive to fuel quality; only premium unleaded (RON 95 or higher) should be used. Vehicles exhibiting drivability issues should be diagnosed per TSB-22-EN-015.
Oil Specs: Requires Kia Genuine 0W-20 meeting API SP/ILSAC GF-6 specification (Kia Owner's Manual). ACEA C5 is also acceptable.
Emissions: Euro 6d certification applies universally to all 2020-Present G4JP engines (VCA Type Approval #VCA/KIA/G4JP/2020).
Power Ratings: Measured under SAE J1349 standards. Output figures are consistent across all markets (Kia TIS Doc. KMS-G4JP-03).
Kia Technical Information System (TIS): Docs KMS-G4JP-01, KMS-G4JP-02, KMS-G4JP-03, TSB-22-EN-015
VCA Type Approval Database (VCA/KIA/G4JP/2020)
SAE International: J1349 Engine Power Certification Standards
The Kia G4JP was used across Kia's MQ4 and KA4 platforms with transverse mounting. This engine received platform-specific adaptations-minor ECU calibrations for the Carnival's higher curb weight and all-wheel-drive variants-and no significant facelift revisions have occurred, ensuring broad parts interchangeability. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on a metal plate affixed to the cylinder head cover near the ignition coils (Kia TIS KMS-G4JP-ID). The 8th digit of the VIN is 'J' for vehicles equipped with the G4JP engine. Visually, the engine is identifiable by its black plastic intake manifold and 'T-GDi' badge on the cover. Critical differentiation from the 2.5 MPI (G4KN): The G4JP features a visible turbocharger and intercooler piping. Service parts for the G4JP are generally interchangeable across Sorento and Carnival models from 2020-Present, but ECU software versions may differ for AWD applications (Kia TIS Doc. KMS-G4JP-SW).
The G4JP's primary reliability risk is high-pressure fuel pump failure, with elevated incidence in vehicles using poor-quality fuel or exceeding service intervals. Kia's internal service data indicates it is a leading cause of drivability complaints for this engine, while adherence to maintenance schedules significantly reduces risk. Extended high-load driving can increase turbo stress, making fuel quality and oil changes critical.
Analysis derived from Kia technical bulletins (2020-Present) and UK DVSA failure statistics (2022-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about KIA G4JP.
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