The Kia G4HG is a 1,598 cc, inline‑four naturally aspirated engine produced from 2018 to present. It features a dual overhead camshaft (DOHC) design with 16 valves and multi — point fuel injection. This refined powerplant delivers 123 PS, offering smooth, linear power delivery ideal for daily commuting and urban driving.
Fitted primarily to the third — generation Kia Ceed (CD) and XCeed, the G4HG was engineered for dependable, economical performance with low running cos…
Production years 2018–Present meet Euro 6d-TEMP standards .
The Kia G4HG is a 1,598 cc inline‑four naturally aspirated engine engineered for compact family vehicles (2018-Present). It combines DOHC 16-valve architecture with multi-point fuel injection to deliver smooth, predictable power. Designed to meet Euro 6d-TEMP standards, it prioritizes reliability, fuel efficiency, and low emissions for everyday use.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,598 cc | |
Fuel type | Petrol | |
Configuration | Inline‑4, DOHC, 16‑valve | |
Aspiration | Naturally Aspirated | |
Bore × stroke | 77.0 mm × 85.8 mm | |
Power output | 90 kW (123 PS) @ 6,300 rpm | |
Torque | 154 Nm @ 4,500 rpm | |
Fuel system | Multi-point fuel injection | |
Emissions standard | Euro 6d-TEMP | |
Compression ratio | 10.5:1 | |
Cooling system | Water‑cooled | |
Turbocharger | None | |
Timing system | Chain-driven | |
Oil type | Refer to vehicle handbook / manufacturer specification | |
Dry weight | Not Available |
The Kia G4HG was used in Kia's CD platform with transverse mounting. This engine received minor ECU updates during its production run but no major mechanical platform-specific adaptations. All applications are documented in OEM service manuals.
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.
The G4HG's primary reliability consideration is maintaining correct oil specification and change intervals to ensure timing chain longevity. Kia service data indicates this engine is generally very robust, while owner reports rarely cite major mechanical failures. Neglecting oil changes is the most common factor leading to issues like chain noise or valve train wear.
Analysis derived from Kia technical bulletins (2018-Present) and owner-reported service data (2019-2023). 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 G4HG engine is widely regarded as exceptionally reliable for daily driving. Its naturally aspirated design and chain-driven timing system are inherently robust. The main consideration is adhering to oil change intervals to prevent chain tensioner wear. With proper maintenance, these engines are expected to easily surpass 200,000 miles without major issues.
The G4HG has very few widespread issues. The most commonly reported are timing chain tensioner wear (on very high-mileage or poorly maintained units), rough idling from clogged injectors or failing coils, and minor oil or coolant leaks from gaskets. These are typical wear items for any engine and are well-documented in Kia service manuals.
The G4HG 1.6L petrol engine powers the non-turbo variants of the third-generation Kia Ceed family, including the Ceed, XCeed, and ProCeed, from 2018 to present. It's typically found in '2' and 'GT-Line' trims in various global markets, positioned below the turbocharged G3LC GT models.
Significant power gains are not practical or cost-effective. Basic modifications like a cold air intake or exhaust might yield 5-8 HP. ECU remapping offers minimal gains due to the engine's conservative factory tune and lack of forced induction. The focus should remain on its excellent reliability and economy.
Fuel economy is very good. Expect around 40-45 mpg (UK) in combined driving, which translates to roughly 7.1-6.3 L/100km. Highway cruising can yield up to 50 mpg (UK) or ~5.6 L/100km, making it an economical choice for commuting and family use.
Yes. Like virtually all modern engines, the G4HG is an interference design. If the timing chain were to fail or jump significantly, the pistons would collide with the open valves, causing catastrophic engine damage. Fortunately, the chain is very durable with proper maintenance.
Kia mandates API SP specification oil, typically 5W-30 viscosity. This high standard ensures optimal protection for the timing chain and valve train. Using a high-quality full synthetic oil meeting this spec is crucial for long-term engine health and is non-negotiable.
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.