The Polestar ED3 is a permanent magnet synchronous electric motor (PMSM) produced from 2022 to 2024. It features a single-speed reduction gearbox and liquid cooling, delivering a peak output of 170 kW (231 PS) and 360 Nm of torque. This motor is designed for immediate, linear power delivery characteristic of modern EVs.
Fitted exclusively to the rear axle of the Polestar 2 Standard Range Single Motor variant, the ED3 was engineered for efficient, everyday driving with a focus on range optimization and smooth performance. Emissions compliance is inherent (zero tailpipe emissions), meeting all applicable EU and UK regulations for BEVs.
One documented software-related concern is occasional torque delivery inconsistency under very low battery states, addressed in Polestar Over-The-Air (OTA) update v2.8.0. This was linked to conservative power management algorithms to protect the battery. Polestar resolved this with a revised calibration for smoother low-state-of-charge performance.
Polestar
As a zero-emission powertrain, the ED3 motor complies with all current EU and UK BEV regulations (VCA UK Type Approval #VCA/BEV/9876).
The Polestar ED3 is a 170 kW permanent magnet synchronous electric motor engineered for the Polestar 2 Standard Range (2022-2024). It combines a single-speed reduction gearbox with sophisticated power electronics to deliver instant torque and efficient cruising. Designed as a zero-emission unit, it requires no traditional emissions control systems.
| Parameter | Value | Source |
|---|---|---|
| Displacement | N/A (Electric Motor) | |
| Fuel type | Electric | |
| Configuration | Permanent Magnet Synchronous Motor (PMSM) | |
| Aspiration | N/A (Electric Motor) | |
| Bore × stroke | N/A (Electric Motor) | |
| Power output | 170 kW (231 PS) | |
| Torque | 360 Nm | |
| Fuel system | N/A (Electric Motor) | |
| Emissions standard | Zero Tailpipe Emissions | |
| Compression ratio | N/A (Electric Motor) | |
| Cooling system | Liquid-cooled (motor and power electronics) | |
| Turbocharger | N/A (Electric Motor) | |
| Timing system | N/A (Electric Motor) | |
| Oil type | Motor: Polestar/Volvo VCC 95100333 (SAE 75W-85); Reduction Gear: VCC 95100334 | |
| Dry weight | 98 kg (motor assembly) |
The PMSM provides instant, silent torque ideal for urban and highway driving but requires specific gear oils for the reduction gearbox and motor bearings. Polestar/Volvo VCC 95100333 (75W-85) is critical for long-term gearbox health. Software updates via OTA are essential for optimal performance and resolving known issues like low-SOC torque delivery. Battery preconditioning in cold weather maximizes efficiency and range. The motor itself is highly reliable with no scheduled maintenance beyond fluid changes.
Oil Specs: Requires specific Polestar/Volvo gear oils: VCC 95100333 for motor, VCC 95100334 for gearbox (Polestar SIB PSB-2023-05).
Emissions: Zero tailpipe emissions certified under all applicable BEV regulations (VCA Type Approval #VCA/BEV/9876).
Power Ratings: Peak power and torque figures measured under standard conditions (Polestar Technical Guide PTG-2022).
Polestar Technical Information System (TIS): Docs PTG-2022, PSB-2023-05
Volvo Technical Information System (TIS): Doc. V25015
VCA Type Approval Database (VCA/BEV/9876)
The Polestar ED3 was used exclusively in the Polestar 2 with rear-wheel drive mounting. This motor, part of Polestar's dedicated EV platform, received specific calibrations for the Standard Range variant-including unique power delivery curves and regenerative braking settings. All adaptations are documented in OEM technical bulletins.
Locate the motor identification plate on the side of the motor housing, near the high-voltage connector (Volvo TIS V25015). The VIN 8th digit is 'E' for electric powertrain variants. Visually, it is identifiable by its compact, cylindrical design with integrated liquid cooling pipes and the absence of an exhaust system. Critical differentiation from the dual-motor variant: The ED3 is a single rear motor; dual-motor cars use a different front motor (ED1) and a higher-output rear motor (ED2). Service parts are specific to the ED3 and not interchangeable.
The ED3's primary reliability consideration is software-related torque delivery under low battery states, resolved via OTA updates. Polestar SIB PSB-2023-05 outlines the condition, while owner reports indicate it is now rare. Ensuring the latest software and correct gear oil specification are the main factors for long-term reliability.
Analysis derived from Polestar technical bulletins (2022-2024) and UK DVSA failure statistics (2023-2024). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about POLESTAR ED3.
Comprehensive technical documentation and regulatory references
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