The Group unveiled this advanced system during its ‘Next-Gen Hybrid System Tech Day’, highlighting its significantly enhanced hybrid technology, which will improve the driving and ownership experience of future Group products.
The next-generation hybrid system features a new transmission with two integrated motors that can be paired flexibly with a range of internal combustion engines, allowing for optimised performance and fuel efficiency across a range of vehicle classes. Additionally, various electrification-focused technologies have been incorporated into the next-generation hybrid system to enhance driving performance, refinement and ride comfort.
“We have developed an innovative new hybrid system that integrates our long-accumulated engine, transmission and hybrid system development experience with the electrification technology applied to our world-class electric vehicles,” said Dong Hee Han, Executive Vice President and Head of Electrified Propulsion Test Center, Hyundai Motor Group. 

Enhanced performance, efficiency, and packaging
The newly developed transmission includes a new P1 motor that handles starting, battery energy generation and energy deployment to assist propulsion. The transmission’s P2 driving motor is responsible for propulsion and regenerative braking. This integrated dual-motor set-up improves power, performance and fuel efficiency while achieving smooth shifting and reduced noise and vibrations for a more refined driving experience.
The transmission can be paired flexibly with internal combustion engines across the Group’s lineup, delivering a system output from the low-100 PS range to the mid-300 PS region, allowing for broad application from sub-compact to large vehicles.
Hyundai Motor Group has employed its extensive experience with hybrid powertrains – and motor and battery control technology to enhance driving performance and comfort. The new, next-generation hybrid system also integrates convenience features commonly found in the Group’s EVs, such as Stay Mode, Vehicle-to-Load (V2L) functionality, and Smart Regenerative Braking.
Improved engine design, advanced compression and injection strategies increase efficiency
The first powertrain to use the next-generation hybrid system uses a newly developed gasoline 2.5-litre turbo hybrid unit, enhancing the design and control technology of the existing 2.5 turbo gasoline engine to maximise efficiency. A new, next-generation gasoline 1.6-litre turbo hybrid powertrain will also be available.
By reassigning the 2.5 engine’s starting and generating tasks to the newly added P1 motor, the turbo hybrid powertrain minimises power losses. 
Typically, internal combustion engines generate power through four strokes: intake, compression, combustion and exhaust. The 2.5 turbo hybrid system utilises an ‘over-expansion cycle’, intentionally delaying intake valve closure during compression to lower the effective compression ratio of the mixed gas in the cylinder while maintaining a high expansion ratio during the combustion process.
This technique reduces power consumption during mixture compression while maximising energy generated after combustion, significantly enhancing engine efficiency.
Additionally, an improved piston design and a significantly expanded triple fuel injection range enhances combustion speed, stabilises combustion and suppresses detonation, improving engine efficiency further still.

Transmission and engine enhancements improve fuel efficiency and driving experience
Focusing on the P1+P2 parallel structure and combustion engine improvements, fuel efficiency and power performance have been enhanced while achieving smoother shifting and improved powertrain refinement.
By connecting the P1 motor directly to the engine, the system reduces engine start time. Precise control of engine load and the driving force of the P1 and P2 motors ensure that the engine operates within a high-efficiency range, improving fuel efficiency.
The gasoline 2.5 turbo hybrid system used in the all-new Palisade delivers maximum fuel efficiency of 14.1 km/l, a maximum system output of 334 PS, and maximum torque of 460 Nm, offering approximately 45 percent greater fuel efficiency, 19 percent more maximum power, and a nine percent improvement in maximum torque compared with a 2.5 turbo gasoline model.
The next-generation gasoline 1.6 turbo hybrid improves fuel efficiency by more than four percent in a mid-size SUV compared with previous models, increasing the system’s maximum rated torque output from 367 Nm to 380 Nm and improving acceleration response.
Additionally, by incorporating the P1 motor into the Active Shift Control (ASC) hybrid transmission logic, the system achieves faster and smoother shifting performance than before. Enhanced control of the engine clutch further reduces time taken for the engine to engage when switching from EV mode, improving comfort and performance. 

Electrification technologies enhance hybrid driving performance
Alongside the next-generation hybrid powertrain, the Group will integrate advanced electrification technologies to enhance performance, efficiency and competitiveness in its new hybrid vehicles.
The Group showcased a lineup of electrification-focused technologies, comprising Electric All-Wheel Drive (e-AWD), Electrification-Vehicle Motion Control (e-VMC 2.0), e-Handling 2.0, Electrification- Evasive Handling Assist (e-EHA 2.0), e-Ride 2.0, Stay Mode, V2L and Smart Regenerative Braking.
The e-AWD system adds a P4 driving motor to the rear axle on vehicles equipped with this technology, enhancing driving performance and acceleration response. The Group plans to offer both e-AWD and conventional mechanical AWD, offering the optimal all-wheel-drive configuration according to vehicle class and regional market requirements.
e-VMC 2.0 is available on hybrid vehicles fitted with e-AWD, enhancing driving stability and ride comfort through independent torque control of the front and rear driving motors. It comprises e-Handling 2.0, e-EHA (Electrification-Evasive Handling Assist) 2.0, and e-Ride 2.0.
e-Handling 2.0 enhances roll prevention during cornering by independently controlling the front and rear motors, applying motor torque in opposite directions to lower the vehicle’s centre of gravity. While the original e-Handling system increased driving stability and responsiveness through single motor acceleration and deceleration control, version 2.0 offers even more refined control for an improved driving experience.
e-EHA 2.0 is an emergency steering assist technology that utilizes vehicle radar and camera sensors to detect potential frontal collisions. It refines evasive manoeuvres through precise braking control of the front and rear motors during sudden steering by the driver.
Particularly, after emergency steering inputs, e-EHA 2.0 assists by using the front motor for forward propulsion while braking the rear motor to lower the vehicle’s centre of gravity, reducing roll and improving stability.
e-Ride 2.0 maximises ride comfort by minimizing vertical movements during speed bump crossings. It leverages changes in the vehicle’s centre of gravity through opposite directional control of the front and rear motors during speed bump entry and exit to minimize pitch and bounce motions.
Stay Mode adapts the ‘Utility Mode’ of EVs for hybrid vehicles, enabling a more pleasant time inside the vehicle when stationary by utilising the high-voltage battery. Stay Mode allows the use of all in-vehicle convenience features, including air-conditioning and multimedia without starting the engine, and can be used for up to one hour when the battery’s state of charge is between 70 and 80 percent. 
This system also includes a ‘Stay Mode Usage Reservation’ feature. This function synchronizes with the navigation system and begins charging the high-voltage battery about two km before reaching a user’s intended destination, targeting a battery charge level of 70 to 80 percent upon arrival to maximize Stay Mode usage time.
Additionally, the next-generation hybrid system’s V2L function offers a maximum output of 3.6 kW, similar to EVs, allowing users to charge and power external appliances and personal tech devices. V2L can be used continuously while the engine is running, and in Stay Mode without the engine running. In this use case, up to 50 percent battery capacity (from 80 to 30 percent SoC) can be utilised.
Other new technologies introduced in conjunction with the next-generation hybrid system include Hierarchical Predictive Control (HPC) and Smart Regenerative Braking, both enhancing fuel efficiency.
HPC optimally controls battery charge by predicting the driving route and road conditions, selecting the best driving mode (e.g. EV, hybrid, regenerative braking mode etc.) along the route for improved fuel efficiency.
Smart Regenerative Braking automatically applies optimal regenerative braking force based on navigation data and distance to other vehicles ahead, reducing brake pedal inputs and increasing battery charge through regenerative braking to further improve fuel efficiency.