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 balanc…
Genesis
Production years 2021–Present meet Euro 6d standards .
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 | Refer to vehicle handbook / manufacturer specification | |
Dry weight | 168 kg |
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.
Engine Finders UK Ltd, which operates EngineCode.uk, can pass your enquiry to engine suppliers in the UK. The service is for vehicles in the United Kingdom, with UK delivery or fitting. This is a commercially connected service, and sending an enquiry does not confirm diagnosis or compatibility.
Diagnostic reminder: If a technician has recommended replacing the engine, you can send an enquiry to engine suppliers in the UK. Confirm the diagnosis first: an engine-code record does not diagnose a fault.
Field reports and technical service bulletins highlight component wear patterns under high-load operation. Adherence to manufacturer service intervals and approved fluid specifications is critical for long-term reliability.
Analysis derived from manufacturer technical service bulletins and industry workshop records. 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 G4K4 is engineered for durability with a chain-driven timing system and robust turbocharger. Its main long-term considerations are managing intake valve carbon buildup and turbo health, common to turbo-GDI engines. Following Genesis's specific maintenance schedule for cleaning and using the correct 5W-30 oil ensures excellent long-term reliability.
The most common issues are intake valve carbon buildup and potential turbocharger wear or oil leaks. Less frequently, fuel injector clogging or coolant leaks from the water pump/thermostat housing may occur. These are well-documented in Genesis service bulletins and have established repair procedures.
The G4K4 2.5L turbo petrol engine is used in the current generation Genesis GV70 SUV and G80 sedan, specifically in their '2.5T' trim levels from 2021 to the present. It is not used in any other Genesis or Hyundai/Kia models.
Aftermarket ECU tuning is common on the G4K4 platform, but increasing boost or altering engine parameters accelerates component wear, impacts emissions compliance, and may void vehicle warranties. Any modifications should be evaluated carefully by a qualified specialist.
Official combined figures are around 9.5-10.0 L/100km (30-28 mpg UK) for the GV70 and G80. Real-world mixed driving typically returns 11.0-13.0 L/100km (26-22 mpg UK), heavily influenced by driving style. Highway cruising is more efficient, while urban driving with frequent boost use consumes more fuel.
Yes. The G4K4 is an interference engine. If the timing chain were to fail or jump, the pistons would collide with the open valves, causing catastrophic internal engine damage. Fortunately, the chain system is very robust with proper maintenance.
Genesis mandates the use of Genesis Genuine Oil 5W-30 meeting API SP specifications. Using this exact oil is crucial for protecting the turbocharger, CVVT system, and ensuring proper lubrication under all operating conditions. Change intervals should not exceed 10,000 km or 12 months.
Comprehensive technical documentation and regulatory references
EngineCode.uk is operated by Engine Finders UK Ltd. It provides engine-reference information and an optional commercial enquiry service. It is not an official manufacturer website. Check the record's sources and confirm vehicle-specific details before relying on it for parts, repairs or replacement.
Our editorial standard prioritises relevant manufacturer documentation and official regulatory sources. The sources and verification status for a record should be checked alongside the data.
A statement is not verified merely because a source is listed. Where supporting evidence is missing or conflicting, the record should identify that limitation. Please report unsupported or inconsistent information.
Transparency in gaps
A missing or unverified value does not mean the manufacturer has withheld it. We distinguish information not yet verified, information not available to us, and information explicitly not disclosed by the source.
Regulatory Stability
EU regulations are referenced using CELEX identifiers for long-term stability.
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.
Records are subject to review and correction. Source links, dates and verification notes should be read with the technical information. Our Editorial and Sourcing Policy explains our standards and review process.
Found an error or missing source? Report a problem with this page. Include the field or statement concerned and a supporting source if available. You can also email corrections@enginecode.uk.
Copyright and permissions
Images and other material may be protected by copyright. Attribution does not by itself grant permission to reuse material. If you believe material on this site infringes your rights, contact copyrights@enginecode.uk with the page URL and details of your claim. We will review the material and take appropriate action.
Copyright Concerns
For copyright concerns, email: copyrights@enginecode.uk
Our Privacy Policy explains how Engine Finders UK Ltd uses information from visits, vehicle lookups, enquiries and messages. Our Cookie Policy explains cookies and similar technologies and how to change your choices.
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.
Ownership and commercial services
EngineCode.uk is owned and operated by Engine Finders UK Ltd. Alongside our reference content, we offer an optional replacement-engine enquiry service through Engine Finders and may identify relevant services provided by businesses connected with us. These commercial connections are disclosed. Using an enquiry service is not required to read our reference content.
Engine Finders UK Ltd operates this website. Our optional enquiry service has a commercial purpose. Our Ownership and Commercial Disclosure explains the relationship between the reference website and that service. Participating suppliers pay a fee or subscription to participate on the network and receive quote requests.
Use this record as a starting point for identification. Specifications and vehicle applications may contain errors or omissions. Confirm the exact engine variant and compatibility using vehicle-specific documentation and a qualified supplier or technician.
All external links open in new tabs. Please verify current availability of resources.