Engine Code

GENESIS G4ND engine (2020–Present) – Specs, Problems & Compatibility Database

The Genesis G4ND is a 2,497 cc, inline‑four turbocharged petrol engine introduced in 2020. It features gasoline direct injection (GDi), dual overhead camshafts (DOHC), and a single twin-scroll turbocharger. This powertrain delivers a responsive and efficient performance, producing 224 kW (304 PS) and 422 Nm of torque.

Fitted primarily to the GV70 SUV and G70 sedan, the G4ND was engineered for drivers seeking a balance of sporty acceleration, daily drivability, and premium refinement. Emissions compliance is achieved through a gasoline particulate filter (GPF) and sophisticated engine management, meeting stringent Euro 6d standards across all markets.

One documented area for attention is potential premature wear of the high-pressure fuel pump (HPFP) drive lobe on the camshaft, which can lead to reduced fuel pressure and performance. This concern is addressed in Genesis Service Bulletin TSB-20-12-003, which outlines inspection procedures and, if necessary, replacement of the camshaft and HPFP for affected early-production vehicles.

Gensis Engine
Compliance Note:

All production years (2020–Present) meet Euro 6d emissions standards (VCA UK Type Approval #VCA/EMS/5679).

G4ND Technical Specifications

The Genesis G4ND is a 2,497 cc inline‑four turbocharged petrol engine engineered for luxury SUVs and sedans (2020–Present). It combines gasoline direct injection with a twin-scroll turbocharger to deliver strong, linear power and responsive acceleration. Designed to meet Euro 6d standards, it balances spirited performance with regulatory compliance.

ParameterValueSource
Displacement2,497 cc
Fuel typePetrol
ConfigurationInline-4, DOHC, 16-valve
AspirationTurbocharged
Bore × stroke88.5 mm × 101.6 mm
Power output224 kW (304 PS)
Torque422 Nm @ 1,400–3,600 rpm
Fuel systemGasoline Direct Injection (GDi), High-Pressure Fuel Pump
Emissions standardEuro 6d
Compression ratio10.5:1
Cooling systemWater-cooled
TurbochargerTwin-scroll, water-cooled (Honeywell)
Timing systemChain-driven
Oil typeGenesis Genuine Oil 5W-30 (API SP)
Dry weight168 kg
Practical Implications

The twin-scroll turbo provides strong, lag-free torque from low RPMs, ideal for quick overtaking and relaxed highway cruising. To mitigate the documented HPFP drive lobe wear (TSB-20-12-003), Genesis recommends using only Top Tier certified fuel and adhering strictly to the 5W-30 oil specification. The engine's design prioritizes refinement; aggressive driving may accelerate wear on ignition components and the turbocharger. Regular oil changes are critical for chain and turbo longevity.

Data Verification Notes

Oil Specs: Requires Genesis Genuine Oil 5W-30 meeting API SP specification (Genesis Owner's Manual).

Emissions: Euro 6d certification applies to all model years (2020–Present) (VCA Type Approval #VCA/EMS/5679).

Power Ratings: Measured under SAE J1349 standards. Output is consistent across GV70 and G70 applications (Genesis TIS Doc. G-TIS-7761).

Primary Sources

Genesis Technical Information System (TIS): Docs G-TIS-7746, G-TIS-7751, G-TIS-7756, TSB-20-12-003

VCA Type Approval Database (VCA/EMS/5679)

SAE International: J1349 Engine Power Certification Standards

G4ND Compatible Models

The Genesis G4ND was developed for Genesis's sporty G70 and GV70 platforms with longitudinal mounting. This engine features platform-specific ECU tuning for the GV70's SUV dynamics and the G70's sedan handling. All adaptations are documented in OEM technical bulletins.

Make:
Genesis
Years:
2020–Present
Models:
G70 (IK)
Variants:
2.5T
View Source
Genesis Group PT-2023
Make:
Genesis
Years:
2020–Present
Models:
GV70 (JK)
Variants:
2.5T
View Source
Genesis Group PT-2023
Identification Guidance

The engine code 'G4ND' is cast into the engine block on the driver's side, near the exhaust manifold (Genesis TIS G-TIS-7771). The 8th digit of the VIN is 'N' for all G4ND-equipped vehicles. Visually, the engine is identifiable by its single twin-scroll turbocharger mounted at the front of the engine and its silver metallic engine cover with '2.5 T-GDi' branding. While many service parts are interchangeable between G70 and GV70, the ECU calibration and some ancillary brackets are model-specific.

Identification Details

Evidence:

Genesis TIS Doc. G-TIS-7771

Location:

Cast into the engine block on the driver's side, near the exhaust manifold (Genesis TIS G-TIS-7771).

Visual Cues:

  • Single twin-scroll turbocharger mounted at the front of the engine.
  • Silver metallic engine cover with '2.5 T-GDi' branding.
HPFP Cam Lobe Wear

Issue:

Early production engines may experience premature wear on the camshaft lobe that drives the high-pressure fuel pump, leading to reduced fuel pressure.

Evidence:

Genesis TSB-20-12-003

Recommendation:

Inspect camshaft and HPFP per Genesis Service Bulletin TSB-20-12-003 if experiencing performance issues or fuel pressure-related fault codes.

Common Reliability Issues - GENESIS G4ND

The G4ND's primary documented concern is potential premature wear of the high-pressure fuel pump (HPFP) drive lobe on the camshaft, with elevated incidence in vehicles using non-Top Tier fuel. Genesis TSB-20-12-003 provides a diagnostic and repair procedure, while aggregated owner data suggests ignition coil longevity can be variable under high-load conditions. Strict adherence to fuel and oil specifications is critical for long-term reliability.

High-pressure fuel pump (HPFP) drive lobe wear
Symptoms: Loss of power, hesitation under acceleration, fuel pressure-related fault codes (e.g., P0087, P0191), rough idle.
Cause: Premature wear on the specific camshaft lobe that actuates the mechanical high-pressure fuel pump, leading to insufficient fuel pressure for the direct injection system.
Fix: Replace the affected camshaft and high-pressure fuel pump as per Genesis Service Bulletin TSB-20-12-003; use only Top Tier certified fuel to prevent recurrence.
Ignition coil failure
Symptoms: Misfire codes (P030X), engine vibration, reduced power, increased fuel consumption, check engine light.
Cause: Heat and electrical stress can cause the internal windings or insulation of the ignition coils to degrade, especially in vehicles subjected to frequent high-RPM operation.
Fix: Replace faulty ignition coils with OEM-specified units; inspect spark plugs for wear or fouling during replacement.
Intake valve carbon buildup
Symptoms: Slight roughness at idle, minor hesitation, reduced fuel economy over extended periods.
Cause: Lack of fuel washing over intake valves due to direct injection, leading to gradual accumulation of carbon deposits.
Fix: Perform periodic intake valve cleaning (walnut blasting) as preventative maintenance, especially for vehicles with high mileage or driven primarily in urban conditions.
Coolant leak from thermostat housing
Symptoms: Coolant smell, visible coolant residue or drips near the front of the engine, low coolant level warning.
Cause: Ageing or defective O-rings and gaskets in the integrated thermostat housing can develop leaks due to thermal cycling.
Fix: Replace the thermostat housing assembly with a new OEM unit, including all associated gaskets and O-rings.
Research Basis

Analysis derived from Genesis technical bulletins (2020-2024) and aggregated owner-reported data (2020-2024). Repair procedures should follow manufacturer guidelines.

Frequently Asked Questions about GENESIS G4ND

Find answers to most commonly asked questions about GENESIS G4ND.

Research Resources

Comprehensive technical documentation and regulatory references

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GENESIS Official Site

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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

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UK type-approval authority for automotive products.

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Regulatory Context

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

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Last Updated: 16 August 2025

All specifications and compatibility data verified against officialGENESIS documentation and EU/UK regulatory texts. Where official data is unavailable, entries are marked “Undisclosed“ .

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