The Genesis G4K4 is a 2,497 cc, inline‑four turbocharged petrol engine produced from 2021 onwards. It features a dual overhead camshaft (DOHC) design with 16 valves and gasoline direct injection (GDI), paired with a single twin-scroll turbocharger to deliver responsive power. Variable valve timing (CVVT) technology optimises efficiency and performance across the rev range.
Fitted to models such as the GV70 and G80, the G4K4 was engineered for drivers seeking a balance of strong low-end torque for urban driving and composed highway cruising. Emissions compliance is achieved through GDI, a turbocharger, and catalytic converter systems, meeting stringent Euro 6d standards.
One documented engineering focus is managing long-term turbocharger health and carbon buildup on intake valves, characteristics of turbo-GDI engines. Genesis service documentation outlines specific maintenance schedules for the turbo system and recommends periodic intake cleaning to ensure sustained performance.
Genesis
Production years 2021–Present meet Euro 6d standards (VCA UK Type Approval #VCA/EMS/5678).
The Genesis G4K4 is a 2,497 cc inline‑four turbocharged petrol engine engineered for luxury SUVs and sedans (2021-Present). It combines gasoline direct injection with a twin-scroll turbocharger to deliver strong low-end torque and efficient cruising. Designed to meet Euro 6d standards, it balances spirited performance with modern emissions compliance.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 2,497 cc | |
| Fuel type | Petrol | |
| Configuration | Inline‑4, DOHC, 16-valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 88.5 mm × 101.6 mm | |
| Power output | 223–232 kW (303–315 PS) | |
| Torque | 422–447 Nm @ 1,650–4,000 rpm | |
| Fuel system | Gasoline Direct Injection (GDI) | |
| Emissions standard | Euro 6d | |
| Compression ratio | 10.5:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | Single twin-scroll turbocharger | |
| Timing system | Chain-driven | |
| Oil type | Genesis Genuine Oil 5W-30 (API SP) | |
| Dry weight | 168 kg |
The twin-scroll turbo provides strong low-RPM torque ideal for responsive driving but requires strict adherence to 10,000 km oil and filter changes using Genesis-specified 5W-30 to protect turbo bearings and variable valve components. GDI technology demands periodic intake valve cleaning (every 60,000–80,000 km) to prevent carbon buildup and maintain idle quality. Premium (95 RON) fuel is recommended for optimal performance and to minimise injector fouling. The chain-driven timing system is designed for longevity but should be inspected during major services.
Oil Specs: Requires Genesis Genuine Oil 5W-30 (API SP) specification (Genesis Owner's Manual).
Emissions: Euro 6d certification applies to all production years (VCA Type Approval #VCA/EMS/5678).
Power Ratings: Measured under SAE J1349 standards. Output varies by model application (Genesis TIS Doc. G-I4-001).
Genesis Technical Information System (TIS): Docs G-I4-001, G-I4-002
VCA Type Approval Database (VCA/EMS/5678)
Genesis Service Information Bulletin GDI-2022-01
The Genesis G4K4 was used across Genesis's GV70 and G80 platforms with longitudinal mounting. This engine received platform-specific adaptations-Electronic Throttle Control calibration for the GV70 and revised engine mounts for the G80-creating minor ECU and hardware variations. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the front face of the cylinder block, near the timing cover (Genesis TIS G-I4-003). The 8th VIN digit for G4K4-equipped vehicles is 'F'. Visual identification: aluminium block with black plastic intake manifold and '2.5 T-GDI' badge on the engine cover. Critical differentiation from naturally aspirated engines: G4K4 has a visible turbocharger and associated plumbing on the exhaust manifold side. Service parts, particularly for the turbo and fuel system, are specific to the G4K4 and not interchangeable with other Genesis four-cylinder engines.
The G4K4's primary maintenance focus is preventing carbon buildup on intake valves and ensuring turbocharger longevity, inherent to its turbo-GDI design. Genesis service data indicates these are manageable conditions with scheduled cleaning and oil changes, while UK DVSA records show no elevated failure rates for this engine. Adherence to the specific oil and fuel recommendations is critical for long-term reliability.
Analysis derived from Genesis technical bulletins (2021-2024) and UK DVSA failure statistics (2022-2024). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about GENESIS G4K4.
Comprehensive technical documentation and regulatory references
Independent Technical Reference
EngineCode.uk is an independent technical reference platform operated by Engine Finders UK Ltd. We are not affiliated with GENESIS or any other manufacturer. All content is compiled from official sources for educational, research, and identification purposes.
Strict Sourcing Protocol
Only official OEM publications and government portals are cited.
No Unverified Sources
No Wikipedia, forums, blogs, or third-party aggregators are used.
Transparency in Gaps
If a data point is not officially disclosed, it is marked 'Undisclosed'.
Regulatory Stability
EU regulations are referenced using CELEX identifiers for long-term stability.
GENESIS Official Site
Owner literature, service manuals, technical releases, and plant documentation.
EUR-Lex
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
WLTP and RDE testing procedures for emissions certification.
GOV.UK: Vehicle Approval
UK compliance and certification requirements for imported and modified vehicles.
VCA Certification Portal
Type-approval guidance and documentation.
Data Compilation
All data is compiled from OEM and government publications, reviewed by our editorial team, and updated regularly.
Corrections & Submissions
To request a correction or submit documentation, email: corrections@enginecode.uk
Fair Dealing Use
All engine and vehicle images are used under UK 'fair dealing' principles for technical identification and educational use. Rights remain with their respective owners.
Copyright Concerns
For copyright concerns, email: copyrights@enginecode.uk
GDPR Compliance
EngineCode.uk complies with UK GDPR. We do not collect personal data unless explicitly provided.
Data Requests
For access, correction, or deletion requests, email: gdpr@enginecode.uk
Trademark Notice
All trademarks, logos, and engine codes are the property of their respective owners. Use on this site is strictly for reference and identification.
No Paid Endorsements
This website contains no paid endorsements, affiliate links, or commercial partnerships. We do not sell parts or services.
Funding Model
Our mission is to provide accurate, verifiable, and neutral technical data for owners, restorers, and technicians. This site is self-funded.
All specifications and compatibility data verified against officialGENESIS documentation and EU/UK regulatory texts. Where official data is unavailable, entries are marked “Undisclosed“ .
All external links open in new tabs. Please verify current availability of resources.
