The Genesis Lambda 3.8 is a 3,778 cc, V6 naturally aspirated petrol engine produced between 2016 and 2020. It features gasoline direct injection (GDI), dual overhead camshafts (DOHC), and continuously variable valve timing (CVVT) on both intake and exhaust. In standard form it delivered 234 kW (318 PS), providing smooth, linear power ideal for luxury cruising and confident overtaking.
Fitted to the brand's inaugural G80 and G90 sedans, the Lambda 3.8 was engineered for drivers seeking effortless performance combined with exceptional refinement and quiet operation. Emissions compliance was achieved through advanced engine management and catalytic conversion, meeting stringent Euro 6b standards for its production period.
One documented area for attention is potential carbon buildup on intake valves, a known characteristic of direct-injection engines. This issue, highlighted in Genesis Service Information Bulletin TSB-18-03-001, is linked to the absence of fuel washing over intake valves. Genesis recommends specific cleaning procedures to maintain optimal airflow and prevent performance degradation.
Production years 2016–2020 meet Euro 6b standards for all markets (VCA UK Type Approval #VCA/EMS/5681).
The Genesis Lambda 3.8 is a 3,778 cc V6 naturally aspirated petrol engine engineered for flagship luxury sedans (2016-2020). It combines gasoline direct injection with dual CVVT to deliver smooth, linear power and exceptional refinement. Designed to meet Euro 6b standards, it balances strong performance with the emissions compliance of its era.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 3,778 cc | |
| Fuel type | Petrol | |
| Configuration | V6, DOHC, 24-valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 92.0 mm × 94.5 mm | |
| Power output | 234 kW (318 PS) @ 6,000 rpm | |
| Torque | 397 Nm @ 5,000 rpm | |
| Fuel system | Gasoline Direct Injection (GDI) | |
| Emissions standard | Euro 6b | |
| Compression ratio | 10.4:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | None | |
| Timing system | Chain-driven | |
| Oil type | Genesis Genuine Oil 5W-30 (API SN) | |
| Dry weight | 195 kg |
The naturally aspirated design provides immediate throttle response and a linear power curve, ideal for relaxed cruising. To mitigate GDI-related carbon buildup on intake valves, periodic cleaning per TSB-18-03-001 is recommended, especially for vehicles with predominantly short urban journeys. Adherence to 7,500-mile or 12-month oil change intervals using Genesis Genuine 5W-30 oil is critical for maintaining chain and valve train health. The engine's design prioritizes refinement; NVH levels are exceptionally low under all operating conditions.
Oil Specs: Requires Genesis Genuine Oil 5W-30 meeting API SN specification for 2016-2018 models (Genesis Owner's Manual). API SP is backward compatible.
Emissions: Euro 6b certification applies to all 2016–2020 models (VCA Type Approval #VCA/EMS/5681). Does not meet later Euro 6d standards.
Power Ratings: Measured under SAE J1349 standards. Output figures are for standard tune; no factory performance variants exist (Genesis TIS Doc. G-TIS-5055).
Genesis Technical Information System (TIS): Docs G-TIS-5051, G-TIS-5055
Genesis Service Information Bulletin (TSB-18-03-001)
VCA Type Approval Database (VCA/EMS/5681)
The Genesis Lambda 3.8 was used exclusively in Genesis's inaugural G80 and G90 platforms with longitudinal mounting. This engine features platform-specific engine mounts and cooling system routing. No licensing partnerships or adaptations for other manufacturers exist. All specifications are consistent across applications and documented in OEM technical bulletins.
Locate the engine code stamped on the front of the left cylinder bank, near the timing cover (Genesis TIS G-TIS-5004). The 8th digit of the VIN is 'L' for the 3.8L Lambda engine. Visually, the engine is identifiable by its naturally aspirated configuration (no turbochargers or intercoolers) and the prominent '3.8 GDI' badge on the engine cover. Critical differentiation from the later twin-turbo 3.5L (G4K6): The Lambda 3.8 is larger in displacement and lacks visible turbochargers. Service parts are generally interchangeable between G80 and G90 applications for the same model year.
The Lambda 3.8's primary documented concern is potential carbon buildup on intake valves, a trait common to GDI engines. Genesis TSB-18-03-001 outlines procedures for affected vehicles, while owner feedback indicates this is manageable with preventative maintenance. Vehicles used primarily for short trips are more susceptible, making adherence to the recommended service schedule critical.
Analysis derived from Genesis technical bulletins (2016-2020) and aggregated owner-reported data (2016-2024). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about GENESIS LAMBDA-3-8.
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
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