The Hyundai Plug-in Hybrid (PHEV) system combines a 1.6 L Smartstream G1.6T petrol engine with a 66.9 kW electric motor and a 13.8 kWh lithium-ion polymer battery. This parallel hybrid setup allows for pure electric driving (up to 68 km WLTP) and seamless transition to hybrid mode. The system is managed by a 6-speed dual-clutch transmission (6DCT) with an integrated electric motor, enabling regenerative braking and optimized power delivery.
Fitted to the Tucson Plug-in Hybrid and Santa Fe Plug-in Hybrid, the PHEV system was engineered for urban efficiency and long-distance flexibility. Emissions compliance is achieved through zero tailpipe emissions in EV mode and a highly efficient combustion engine, meeting stringent Euro 6d standards across all markets. The system prioritizes electric driving for short commutes while retaining the range of a conventional vehicle.
One documented engineering focus is thermal management of the high-voltage battery under sustained high-load conditions. This is addressed in Hyundai Technical Service Bulletin TSB-22-01-001, which details software updates for the battery management system (BMS) to optimize cooling fan operation. The power electronics also incorporate adaptive algorithms to manage power flow between the engine, motor, and battery.
All production years (2019–Present) meet Euro 6d standards (VCA UK Type Approval #VCA/EMS/8888).
The Hyundai Plug-in Hybrid (PHEV) is a 1.6 L turbocharged petrol engine paired with a 66.9 kW electric motor, engineered for SUVs (2019-Present). It combines direct fuel injection with a high-voltage electric motor to deliver zero-emission capability and high combined system output. Designed to meet Euro 6d standards, it balances electric efficiency with long-distance performance.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,598 cc | |
| Fuel type | Petrol / Electric | |
| Configuration | Inline-4, DOHC, 16-valve (Petrol) | |
| Aspiration | Turbocharged (Petrol) | |
| Bore × stroke | 77.0 mm × 85.8 mm | |
| Power output | Combined: 195 kW (265 PS) | |
| Torque | Combined: 350 Nm | |
| Fuel system | Gasoline direct injection (GDI) | |
| Emissions standard | Euro 6d | |
| Compression ratio | 10.5:1 | |
| Cooling system | Separate circuits for engine and battery | |
| Turbocharger | Single twin-scroll (BorgWarner) | |
| Timing system | Chain-driven | |
| Oil type | Hyundai Genuine Oil 0W-20 (API SP) | |
| Electric Motor Power | 66.9 kW | |
| Battery Capacity | 13.8 kWh (Lithium-ion Polymer) | |
| EV Range (WLTP) | Up to 68 km |
The PHEV system offers silent, zero-emission driving for daily commutes but requires regular charging to maximize efficiency. The 0W-20 oil is critical for engine efficiency and hybrid system performance. The high-voltage battery's longevity is optimized by avoiding constant 100% charging; Hyundai recommends charging to 80% for daily use (per Owner's Manual). Thermal management is crucial; ensure the battery cooling system is free of debris. Software updates for the BMS, as per TSB-22-01-001, should be applied during service visits to maintain optimal battery health.
Oil Specs: Requires Hyundai Genuine Oil 0W-20 (API SP) specification (Hyundai Owner's Manual).
Emissions: Euro 6d certification applies universally to all PHEV systems (VCA Type Approval #VCA/EMS/8888).
Power Ratings: Combined system output measured under SAE J1349 standards (Hyundai TIS Doc. H-I4-PHEV-01).
Hyundai Technical Information System (TIS): Docs H-I4-PHEV-01, TSB-22-01-001
VCA Type Approval Database (VCA/EMS/8888)
SAE International: J1349 Engine Power Certification Standards
The Hyundai Plug-in Hybrid (PHEV) system was used across Hyundai's Tucson and Santa Fe platforms with transverse mounting. This powertrain received platform-specific adaptations-unique battery packaging for the Santa Fe and a specific rear motor mount for the Tucson. All adaptations are documented in OEM technical bulletins.
Locate the VIN; the 8th digit for PHEV models is typically 'P'. The vehicle will have a charging port on the front left or right fender. Under the hood, the 6DCT transmission has a large orange high-voltage cable connected to it. Critical differentiation from the mild-hybrid (MHEV) system: PHEV models have a larger 13.8 kWh battery under the rear seats and a dedicated charging port. Service requires high-voltage safety certification; always disconnect the 12V battery and wait 10 minutes before working on high-voltage components (Hyundai TIS H-SAFETY-01).
The PHEV's primary focus is managing the complexity of the hybrid control system and high-voltage battery health. Hyundai TSB-22-01-001 notes potential for BMS software glitches under extreme ambient temperatures, while routine software updates minimize most risks. Neglecting the 12V auxiliary battery can lead to system faults, making adherence to service schedules critical.
Analysis derived from Hyundai 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 PLUG-IN-HYBRID-PHEV.
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