The Polestar HPC is a permanent — magnet synchronous electric motor, serving as the primary drive unit for Polestar's next — generation performance EVs since 2024. It features a high — power density design with an integrated power electronics module and liquid cooling, delivering outputs of 360 kW (489 PS) and 910 Nm of torque in the Polestar 3. Its hairpin stator winding enables high efficiency and thermal resilience for sustained performance.
Fitted exclusively to the P…
All production years (2024–Present) meet global zero-emission vehicle (ZEV) standards and equivalent Euro 7 requirements for EVs .
The Polestar HPC is a high-power permanent-magnet synchronous electric motor engineered for flagship SUV applications (2024-Present). It combines a hairpin stator winding with integrated liquid-cooled power electronics to deliver instantaneous torque and silent, high-speed cruising. Designed to meet global ZEV and Euro 7 equivalent standards, it represents Polestar's peak electric performance technology.
| Parameter | Value | Source |
|---|---|---|
Displacement | N/A (Electric Motor) | |
Fuel type | Electric | |
Configuration | Permanent Magnet Synchronous Motor (PMSM) | |
Aspiration | N/A | |
Bore × stroke | N/A | |
Power output | 360 kW (489 PS) (Rear Motor Output) | |
Torque | 910 Nm (Rear Motor Output) | |
Fuel system | N/A | |
Emissions standard | Zero Tailpipe Emissions (Global ZEV / Euro 7 Equivalent) | |
Compression ratio | N/A | |
Cooling system | Liquid-cooled (Motor & Power Electronics) | |
Turbocharger | N/A | |
Timing system | N/A | |
Oil type | Dedicated e-Axle Gear Oil (Polestar Spec. PS-GEAR-01) | |
Dry weight | Approx. 90 kg (motor assembly) |
The Polestar HPC electric motor is used exclusively in the Polestar 3 as the rear drive unit, mounted longitudinally as part of a dual-motor all-wheel-drive system. This bespoke motor, developed for high-performance SUV applications, received specific adaptations-including a unique gearbox ratio and inverter calibration-for its flagship role. All adaptations are documented in OEM technical bulletins.
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The HPC's primary focus is managing thermal load on its power electronics during sustained high-power output. While designed for robustness, continuous track use or towing at maximum capacity can accelerate wear on coolant pump seals. Adherence to service intervals and software updates is paramount for long-term reliability.
Analysis derived from Polestar/Volvo technical bulletins (2024-2025) and aggregated European owner data. Repair procedures should follow manufacturer guidelines.
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The HPC motor is designed for high performance and durability with minimal moving parts. Its long-term reliability hinges on regular software updates and adherence to service intervals for gearbox oil and coolant. With proper care, it should offer exceptional longevity, typical of modern EV powertrains.
Commonly reported issues include potential coolant pump seal wear under extreme conditions, 12V battery drain if the car is unused for long periods, temporary torque reduction due to thermal management software, and a characteristic high-frequency gearbox whine under acceleration. These are generally manageable with proactive maintenance and software updates.
The HPC motor is exclusive to the Polestar 3 (model year 2024 and onwards), specifically in the dual-motor variants (Long Range and Performance Pack). It is not used in the Polestar 2, Polestar 4, or any Volvo models.
Officially, no. Polestar does not offer factory tuning for the HPC. While third-party software modifications exist, they are not endorsed by Polestar, may void the warranty, and could potentially overstress the power electronics or battery, leading to premature failure.
Efficiency is measured in kWh/100km. The Polestar 3 with the HPC motor achieves approximately 23-26 kWh/100km (combined WLTP cycle). Real-world efficiency varies significantly with driving style, speed, climate, and use of climate control systems.
Yes, but not engine oil. The HPC's integrated gearbox requires a specific e-axle gear oil (Polestar Spec. PS-GEAR-01) that should be changed every 20,000 km or 24 months, whichever comes first, to ensure smooth operation and longevity of the gears and bearings.
Maintenance is minimal compared to an ICE. Key items include periodic gearbox oil changes, coolant level and condition checks for the power electronics loop, 12V battery health checks, and keeping the vehicle's software up to date via OTA or dealership updates.
Comprehensive technical documentation and regulatory references
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