The Hyundai G4JD is a 2,359 cc, inline‑four naturally aspirated petrol engine produced between 2005 and 2010. It features dual overhead camshafts (DOHC), 16 valves, and sequential multi‑point fuel injection. In standard form it delivered 125–132 kW (170–180 PS) with torque between 220–227 Nm, offering responsive mid‑range performance for mid‑size applications.
Fitted to models such as the Sonata (NF), Grandeur (TG), and Azera (TG), including the 2.4 GLS and 2.4 SE va…
Hyundai
Production years 2005–2010 meet Euro 4 standards; no Euro 5 variants were produced for this engine family .
The Hyundai G4JD is a 2,359 cc inline‑four naturally aspirated petrol engine engineered for mid‑size sedans (2005–2010). It combines DOHC architecture with sequential multi‑point fuel injection to deliver linear power delivery and refined operation. Designed to meet Euro 4 emissions standards, it balances drivability with regulatory compliance.
| Parameter | Value | Source |
|---|---|---|
Displacement | 2,359 cc | |
Fuel type | Petrol (Unleaded) | |
Configuration | Inline‑4, DOHC, 16‑valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 88.0 mm × 97.0 mm | |
Power output | 125–132 kW (170–180 PS) @ 5,800 rpm | |
Torque | 220–227 Nm @ 4,000 rpm | |
Fuel system | Sequential multi‑point fuel injection (MPFI) | |
Emissions standard | Euro 4 | |
Compression ratio | 10.0:1 | |
Cooling system | Water‑cooled | |
Turbocharger | None | |
Timing system | Chain (maintenance‑free design) | |
Oil type | Refer to vehicle handbook / manufacturer specification | |
Dry weight | 145 kg |
The Hyundai G4JD was used across Hyundai's NF/TG platforms with longitudinal mounting and no external licensing. This engine received platform-specific adaptations—revised engine mounts in the Grandeur TG and modified accessory drives in the Azera TG—and from mid‑2007 the facelifted Sonata NF adopted updated cylinder heads and HLAs, creating minor interchange limits. 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 G4JD is generally robust, especially post-mid-2007 models with updated HLAs. Early engines (2005–mid-2007) are prone to HLA ticking if oil changes are neglected. With proper maintenance using correct 10W‑40 oil and 10,000 km intervals, many examples exceed 250,000 km without major issues.
Top issues include hydraulic lash adjuster noise (pre-mid-2007), oil sludge from infrequent changes, sticking intake manifold runners, and coolant leaks from the plastic thermostat housing. These are documented in Hyundai TSBs and service manuals.
The G4JD powered the Sonata NF (2005–2010), Grandeur TG (2005–2010), and Azera TG (2006–2010). It was never used in Kia or licensed externally.
Modest gains are possible via ECU remap (+8–12 kW) and intake/exhaust upgrades, but the engine lacks forced induction. Significant tuning is limited by stock internals and fuel system. Most owners prioritize reliability over performance.
In a 2007 Sonata 2.4, expect ~10.2 L/100km city and ~6.8 L/100km highway, or 28–35 mpg UK combined. Real-world mixed driving typically yields 30–34 mpg UK, depending on condition and driving style.
No. The G4JD is a non-interference engine. If the timing chain fails, pistons will not contact valves, minimizing catastrophic damage risk—though repair is still required.
Hyundai specifies SP 10W‑40 or ACEA A3/B3 10W‑40 synthetic blend. Avoid low-SAPS or 5W‑30 oils. Change every 10,000 km to prevent sludge and HLA wear, especially in pre-mid-2007 engines.
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.