The Genesis D4HB is a 1,998 cc, inline‑four turbo‑diesel engine produced between 2018 and 2023. It features a cast — iron block, aluminum head, dual overhead camshafts (DOHC), and a high — pressure common — rail fuel system. In standard form, it delivered 149 kW (202 PS) and 440 Nm of torque, with its variable geometry turbocharger (VGT) providing strong, accessible torque for responsive acceleration.
Fitted primarily to the second — generation Genesis G70 and GV70 SUV, th…
Production years 2018–2023 meet Euro 6d standards .
The Genesis D4HB is a 1,998 cc inline-four turbo-diesel engineered for luxury sedans and SUVs (2018-2023). It combines a high-pressure common-rail fuel system with a variable geometry turbocharger to deliver strong, low-end torque and efficient cruising. Designed to meet Euro 6d standards, it balances performance with stringent emissions compliance.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,998 cc | |
Fuel type | Diesel | |
Configuration | Inline-4, DOHC, 16-valve | |
Aspiration | Turbocharged | |
Bore × stroke | 84.0 mm × 90.0 mm | |
Power output | 149 kW (202 PS) @ 4,000 rpm | |
Torque | 440 Nm @ 1,750–2,750 rpm | |
Fuel system | Common Rail Direct Injection (up to 2,000 bar) | |
Emissions standard | Euro 6d | |
Compression ratio | 16.0:1 | |
Cooling system | Water-cooled | |
Turbocharger | Single variable-geometry turbo (VGT) | |
Timing system | Chain-driven | |
Oil type | Refer to vehicle handbook / manufacturer specification | |
Dry weight | 165 kg |
The Genesis D4HB was used exclusively in Genesis's G70 sedan and GV70 SUV with longitudinal mounting. This engine received minor ECU calibrations for different model years but no major mechanical revisions affecting core compatibility during its 2018-2023 production. 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 D4HB is generally robust, with its main long-term consideration being the EGR and DPF systems common to modern diesels. With proactive maintenance, including regular highway driving for DPF regeneration and strict adherence to oil change intervals using the correct low-ash 5W-30 spec, the engine can be very reliable. The timing chain is designed for the engine's lifespan.
The most frequently documented issues are EGR system clogging, DPF regeneration failures, AdBlue system faults (sensors, pump), and turbocharger actuator problems. These are well-covered in Genesis service information and are generally manageable with proper maintenance and driving habits.
The D4HB 2.0L diesel was used in the second-generation Genesis G70 sedan (2018-2023) and the GV70 SUV (2020-2023), specifically in the 2.0D trim level. It was not used in any other Genesis or Hyundai/Kia models during this period.
Yes, ECU remapping is possible and can yield modest power gains, typically around 20-30 kW and 50-70 Nm. The engine's internals are generally robust enough to handle this level of tuning. However, increased power puts additional stress on the turbo, clutch, and drivetrain, and may accelerate wear on the EGR and DPF systems.
Fuel economy is excellent for a luxury vehicle. Expect combined figures around 6.0-7.0 L/100km (40-47 mpg UK) in real-world driving for the G70, and slightly higher for the heavier GV70. Highway cruising can achieve 5.0-5.5 L/100km (51-56 mpg UK).
Yes. The D4HB is an interference engine. If the timing chain were to fail or jump significantly, the pistons would collide with the open valves, causing catastrophic internal engine damage. This underscores the importance of using the correct oil to ensure chain tensioner function.
Genesis mandates the use of 5W-30 viscosity oil meeting their specific Genuine Oil standard with ACEA C2/C3 low-ash specifications. Using the correct oil is crucial for protecting the engine and ensuring the longevity of the DPF and SCR (AdBlue) emissions systems. Change intervals should not be extended.
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.