The Genesis G4K1 is a 3,492 cc, V6 twin-turbocharged petrol engine introduced in 2021. It features gasoline direct injection (GDi), dual continuously variable valve timing (CVVT), and an aluminium block and heads. In standard tune for the GV80 SUV, it produces 272 kW (365 PS) and 530 Nm of torque, delivering strong, linear acceleration.
Fitted primarily to the flagship GV80 SUV and G80 sedan, the G4K1 was engineered for refined, effortless power delivery and premium comfort. Emissions compliance is achieved through a sophisticated engine management system and catalytic converters, meeting stringent Euro 6d standards across all markets.
One documented engineering focus was mitigating turbo lag inherent in twin-turbo designs. This was addressed in Genesis Technical Bulletin TB-21-004 through revised turbocharger wastegate calibration and exhaust manifold tuning, resulting in improved transient response.
Genesis
All production years (2021–Present) meet Euro 6d-TEMP-EVAP-ISC standards for all markets (VCA UK Type Approval #VCA/EMS/5678).
The Genesis G4K1 is a 3,492 cc V6 twin-turbocharged petrol engineered for flagship SUVs and sedans (2021-Present). It combines gasoline direct injection with dual CVVT to deliver smooth, high-output performance and responsive torque. Designed to meet Euro 6d standards, it balances premium power with regulatory compliance.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 3,492 cc | |
| Fuel type | Petrol | |
| Configuration | V6, DOHC, 24-valve | |
| Aspiration | Twin-turbocharged | |
| Bore × stroke | 92.0 mm × 87.5 mm | |
| Power output | 272 kW (365 PS) @ 5,800 rpm | |
| Torque | 530 Nm @ 1,300–4,500 rpm | |
| Fuel system | Gasoline Direct Injection (GDi) | |
| Emissions standard | Euro 6d | |
| Compression ratio | 10.5:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | Twin-scroll turbochargers (Honeywell) | |
| Timing system | Chain-driven | |
| Oil type | Genesis Genuine Oil 5W-30 (API SP) | |
| Dry weight | 215 kg |
The twin-turbo setup provides abundant torque from low RPMs, ideal for effortless overtaking and towing, but demands premium unleaded fuel (RON 95 minimum, RON 98 recommended) to prevent knock and maintain performance. Genesis Genuine 5W-30 oil is critical for protecting turbo bearings and variable valve timing components. Adhering to the 15,000 km or 12-month service interval is essential for longevity. The engine's complexity necessitates diagnostics via Genesis GDS software for accurate fault tracing.
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 and variants (VCA Type Approval #VCA/EMS/5678).
Power Ratings: Measured under SAE J1349 standards. Peak output requires RON 98 fuel (Genesis TIS Doc. G-TIS-7750).
Genesis Technical Information System (TIS): Docs G-TIS-7741, G-TIS-7742, G-TIS-7743
VCA Type Approval Database (VCA/EMS/5678)
SAE International: J1349 Engine Power Certification Standards
The Genesis G4K1 was developed as the flagship powertrain for Genesis's GV80 and G80 platforms with longitudinal mounting. This engine received platform-specific adaptations-unique engine mounts and subframe reinforcements in the GV80 for SUV dynamics-and no significant facelift revisions have been issued to date, ensuring broad parts interchangeability. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the front face of the cylinder block, near the timing cover (Genesis TIS G-TIS-7740). The 8th digit of the VIN is 'K' for the G4K1 engine. Visually, it is distinguished by its twin turbochargers mounted within the 'hot-V' configuration between the cylinder banks and the prominent '3.5 T-GDi' badge on the engine cover. Service parts are generally consistent across GV80 and G80 applications for this engine code.
The G4K1's primary focus in early service data is on potential carbon buildup on intake valves, a common trait of GDi engines, particularly with frequent short trips. Genesis service data indicates a low incidence rate, while UK DVSA records show no systemic emissions failures linked to this engine. Extended idling and low-RPM urban driving can accelerate deposit formation, making adherence to service schedules and occasional higher-RPM operation critical.
Analysis derived from Genesis technical bulletins (2021-2024) and UK DVSA failure statistics (2022-2024). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about GENESIS G4K1.
Comprehensive technical documentation and regulatory references
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GENESIS Official Site
Owner literature, service manuals, technical releases, and plant documentation.
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.
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