The Genesis G4KA is a 3,342 cc, V6 twin — turbocharged petrol engine produced between 2016 and 2020. It features gasoline direct injection (GDI), dual overhead camshafts (DOHC), and variable valve timing on both intake and exhaust. This powerplant delivers strong, linear power for confident overtaking and highway cruising.
Fitted primarily to the first — generation Genesis G80 sedan, the G4KA was engineered for refined performance and quiet operation. Emissions comp…
Genesis
Production years 2016–2020 meet Euro 6 standards across all applicable markets (VCA UK Type Approval #VCA/EMS/5678).
The Genesis G4KA is a 3,342 cc V6 twin-turbo petrol engineered for luxury sedans (2016-2020). It combines gasoline direct injection with twin-scroll turbochargers to deliver strong, linear power and refined operation. Designed to meet Euro 6 standards, it balances high performance with regulatory compliance.
| Parameter | Value | Source |
|---|---|---|
Displacement | 3,342 cc | |
Fuel type | Petrol | |
Configuration | V6, DOHC, 24-valve | |
Aspiration | Twin-turbocharged | |
Bore × stroke | 92.0 mm × 83.8 mm | |
Power output | 272 kW (365 PS) @ 6,000 rpm | |
Torque | 510 Nm @ 1,300–4,500 rpm | |
Fuel system | Gasoline Direct Injection (GDI) | |
Emissions standard | Euro 6 | |
Compression ratio | 10.1:1 | |
Cooling system | Water-cooled | |
Turbocharger | Twin-scroll turbochargers | |
Timing system | Chain-driven | |
Oil type | Genesis Genuine Oil 5W-30 (API SP) |
The Genesis G4KA was used exclusively in Genesis's G80 platform with longitudinal mounting. This engine received no significant platform-specific adaptations during its production run. All applications are documented in OEM technical bulletins.
The G4KA's primary documented concern is intake valve carbon buildup inherent to its GDI design, with elevated incidence in predominantly short-trip urban driving. Genesis TSB-18-FL-003 outlines the condition, while owner feedback indicates it can manifest as drivability issues if neglected. Extended oil change intervals or low-quality fuel can accelerate deposit formation, making preventative cleaning critical.
Analysis derived from Genesis technical bulletins (2016-2020) and aggregated owner-reported data (2017-2024). 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 G4KA is a robust engine with strong performance. Its main long-term consideration is managing intake valve carbon buildup, common to GDI engines. With proactive maintenance, including periodic induction cleaning and using the correct oil, it can be very reliable for 200,000 km and beyond.
The most frequently documented issues are intake valve carbon buildup, occasional turbo wastegate rattle, and higher-than-average oil consumption. HPFP failure is less common but a known potential fault. These are covered in Genesis service bulletins and technical documentation.
The G4KA engine was used exclusively in the first-generation Genesis G80 luxury sedan (model years 2016 to 2020), specifically in the 3.3T trim level. It was not used in the G70, G90, or GV series SUVs during this period.
Yes, the G4KA responds well to ECU remapping. Stage 1 tunes can safely increase output by 30-50 kW and 70-100 Nm of torque. The stock internals are strong, but supporting modifications like an upgraded intercooler are recommended for higher stages to ensure reliability.
Official combined figures are around 10.5 L/100km. Real-world consumption typically ranges from 11.5 L/100km on highways to 14-16 L/100km in city driving. Aggressive driving will significantly increase consumption due to the engine's power and weight of the G80.
Yes. The G4KA is an interference engine. If the timing chain were to fail catastrophically, the pistons would collide with the open valves, causing severe internal engine damage. Fortunately, the chain is very durable with proper maintenance.
Genesis specifies a full synthetic 5W-30 oil meeting the latest API SP (or equivalent) standard. Using Genesis Genuine Oil or a high-quality equivalent is crucial for protecting the turbos and managing engine temperatures under load.
Comprehensive technical documentation and regulatory references
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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
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