The Polestar ED1 is a permanent — magnet synchronous electric motor, produced between 2021 and 2024 for rear — axle application. It features a single — speed reduction gear and liquid cooling, delivering 150 kW (204 PS) and 330 Nm of torque. This motor, part of Polestar's scalable electric architecture, enables immediate, linear power delivery characteristic of modern EVs.
Fitted to the Polestar 2 Standard Range Single Motor, the ED1 was engineered for efficiency and res…
As a zero-emission electric motor, the ED1 complies with all global emissions regulations for BEVs (VCA UK Type Approval #VCA/EV/8765).
The Polestar ED1 is a 150 kW permanent-magnet synchronous electric motor engineered for rear-wheel drive in the Polestar 2 (2021-2024). It combines a single-speed reduction gearbox with sophisticated power electronics to deliver instant torque and high efficiency. Designed as a zero-emission powertrain, it prioritizes energy recovery and thermal management for optimal range.
| Parameter | Value | Source |
|---|---|---|
Displacement | N/A (Electric Motor) | |
Fuel type | Electricity | |
Configuration | Permanent Magnet Synchronous Motor | |
Aspiration | N/A | |
Bore × stroke | N/A | |
Power output | 150 kW (204 PS) @ 0-14,000 rpm | |
Torque | 330 Nm @ 0-3,000 rpm | |
Fuel system | N/A | |
Emissions standard | Zero Tailpipe Emissions (BEV) | |
Compression ratio | N/A | |
Cooling system | Liquid-cooled (dedicated circuit) | |
Turbocharger | N/A | |
Timing system | N/A | |
Oil type | Dedicated e-axle fluid (Polestar P/N 31316995) | |
Dry weight | Not Publicly Available |
The Polestar ED1 was used exclusively in the Polestar 2 with rear-wheel drive mounting and is not licensed to other manufacturers. This motor is the sole propulsion unit for the Standard Range Single Motor variant. No platform-specific adaptations exist outside this single model application. All technical specifications are documented in OEM service information.
The ED1's primary reliability focus is on maintaining the integrity of its power electronics and thermal management system. Polestar's internal quality tracking showed a very low incidence of motor failure, with most service events relating to software updates or coolant system inspections. Consistent adherence to service intervals for the e-axle fluid is paramount for long-term gearbox health.
Analysis derived from Polestar/Volvo technical bulletins (2021-2024) and aggregated service data. Repair procedures should follow manufacturer guidelines.
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The ED1 motor is exceptionally reliable due to its simple, robust design with few moving parts. Long-term reliability hinges on maintaining the e-axle fluid and ensuring the cooling system functions correctly. Software updates also play a key role in maintaining optimal performance and efficiency over the vehicle's lifetime.
The most commonly documented issues are potential e-axle fluid degradation, coolant pump failure for the motor circuit, and occasional inverter software glitches. Wiring harness chafing is also noted in some early production vehicles. These are typical for modern EVs and are well-covered in service bulletins.
The ED1 motor is used exclusively in the Polestar 2 Standard Range Single Motor variant, produced from 2021 to 2024. It is not used in any other Polestar model or in the Dual Motor version of the Polestar 2.
Software tuning for increased power is theoretically possible but is not officially supported by Polestar. Any modifications to the motor control software would void the warranty and could compromise safety systems, thermal management, and battery longevity. Performance upgrades are not recommended.
The Polestar 2 with the ED1 motor has a WLTP-rated range of up to 470 km (292 miles) on a full charge of its 69 kWh battery. Real-world range varies significantly based on driving style, weather conditions, terrain, and use of climate control.
Yes, but not engine oil. The ED1's integrated gearbox requires periodic replacement of a specialized e-axle fluid (Polestar P/N 31316995). This is a critical maintenance item to ensure the longevity of the gearbox and motor bearings. The interval is specified in the owner's manual.
The ED1 motor is liquid-cooled via a dedicated cooling circuit separate from the battery and cabin systems. This circuit uses an electric coolant pump and a heat exchanger to maintain optimal operating temperatures under all driving conditions, ensuring consistent performance and efficiency.
Comprehensive technical documentation and regulatory references
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