The Polestar ED2 is a permanently excited synchronous electric motor, forming the rear axle drive unit for Polestar's dual — motor all — wheel — drive EVs from 2024. It features a single — speed reduction gearbox and integrated power electronics, delivering outputs up to 190 kW (258 PS) and 350 Nm of torque. Its oil — cooled stator and rotor design enables sustained high performance without thermal throttling.
Fitted primarily to the Polestar 3 and Polestar 4, this motor was e…
All production years (2024–Present) meet zero tailpipe emission standards globally .
The Polestar ED2 is a 190 kW rear-axle electric drive unit engineered for premium SUVs and coupes (2024-Present). It combines a permanently excited synchronous motor with a single-speed reduction gearbox to deliver instant, silent torque. Designed for zero tailpipe emissions, it leverages regenerative braking to meet the strictest global environmental regulations.
| Parameter | Value | Source |
|---|---|---|
Displacement | N/A (Electric Motor) | |
Fuel type | Electric | |
Configuration | Permanently Excited Synchronous Motor | |
Aspiration | N/A | |
Bore × stroke | N/A | |
Power output | 190 kW (258 PS) | |
Torque | 350 Nm (instantaneous) | |
Fuel system | N/A | |
Emissions standard | Zero Tailpipe Emissions | |
Compression ratio | N/A | |
Cooling system | Dedicated oil cooling for motor and gearbox | |
Turbocharger | N/A | |
Timing system | N/A | |
Oil type | Polestar/Volvo VCC RBS0-3AE (Gearbox Oil) | |
Dry weight | 98 kg (drive unit) |
The Polestar ED2 was used as the rear drive unit in Polestar's P3 platform with longitudinal mounting. This motor received no platform-specific adaptations beyond its integration with the front e-motor and central battery. Production is ongoing, with software-defined performance updates creating potential generational differences. All adaptations are documented in OEM technical bulletins.
Engine Finders UK Ltd, which operates EngineCode.uk, can pass your enquiry to engine suppliers in the UK. The service is for vehicles in the United Kingdom, with UK delivery or fitting. This is a commercially connected service, and sending an enquiry does not confirm diagnosis or compatibility.
Diagnostic reminder: If a technician has recommended replacing the engine, you can send an enquiry to engine suppliers in the UK. Confirm the diagnosis first: an engine-code record does not diagnose a fault.
The ED2's primary reliability consideration is managing thermal load during sustained high output, with elevated importance placed on cooling system integrity. Polestar engineering reports note the system is robust when maintained correctly, while DVSA data shows no systemic failures in its initial production run. High ambient temperatures make monitoring system status critical during towing or track use.
Analysis derived from manufacturer technical service bulletins and industry workshop records. Repair procedures should follow manufacturer guidelines.
The most common questions about engine codes, what they mean, how to find them and how this database works
As a new electric motor with no internal combustion components, the ED2 has a strong theoretical reliability foundation. Its primary long-term concerns are the sealed gearbox's bearing life and the integrity of its cooling system. Adherence to scheduled high-voltage system inspections is key to ensuring longevity.
Documented concerns focus on potential cooling system leaks, rare instances of gearbox bearing noise, occasional software glitches affecting performance, and connector corrosion in harsh environments. These are addressed in Polestar's service bulletins for the 2024 model year.
The ED2 electric drive unit is used as the rear motor in the dual-motor variants of the Polestar 3 and Polestar 4, starting from the 2024 model year. It is not used in single-motor configurations or any other Polestar model.
Yes, but exclusively through official Polestar software updates. The hardware has significant headroom, and Polestar has released 'Performance' software packs that increase output. Unauthorized third-party tuning is not supported and can void the warranty or damage the powertrain.
As an electric motor, it consumes electricity. In a Polestar 3 Long Range Dual Motor, expect a real-world consumption of approximately 20-25 kWh/100km (or 4.0-5.0 miles/kWh), heavily influenced by driving style, climate control use, and terrain. The ED2 itself doesn't have standalone consumption figures.
No. The ED2 is an electric motor and does not have pistons, valves, or a timing system. The concept of an 'interference engine' does not apply. Mechanical failure would typically manifest as bearing noise or a complete loss of function, not catastrophic internal collision.
The ED2's integrated gearbox requires a specific Polestar/Volvo VCC RBS0-3AE oil. However, it is a sealed-for-life unit, meaning no routine oil changes are necessary or possible for the owner. Any servicing of the gearbox oil is a major procedure requiring specialized equipment and should only be performed by Polestar technicians if a leak or failure is diagnosed.
Comprehensive technical documentation and regulatory references
EngineCode.uk is operated by Engine Finders UK Ltd. It provides engine-reference information and an optional commercial enquiry service. It is not an official manufacturer website. Check the record's sources and confirm vehicle-specific details before relying on it for parts, repairs or replacement.
Our editorial standard prioritises relevant manufacturer documentation and official regulatory sources. The sources and verification status for a record should be checked alongside the data.
A statement is not verified merely because a source is listed. Where supporting evidence is missing or conflicting, the record should identify that limitation. Please report unsupported or inconsistent information.
Transparency in gaps
A missing or unverified value does not mean the manufacturer has withheld it. We distinguish information not yet verified, information not available to us, and information explicitly not disclosed by the source.
Regulatory Stability
EU regulations are referenced using CELEX identifiers for long-term stability.
EUR-Lex
EU emissions and type-approval regulations (e.g., CELEX:32007R0715, CELEX:32017R1151).
GOV.UK: Vehicle Approval & V5C
UK vehicle approval processes, import rules, and MoT guidance.
DVLA: Engine Changes & MoT
Official guidance on engine swaps and inspection implications.
Vehicle Certification Agency (VCA)
UK type-approval authority for automotive products.
Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
WLTP and RDE testing procedures for emissions certification.
GOV.UK: Vehicle Approval
UK compliance and certification requirements for imported and modified vehicles.
VCA Certification Portal
Type-approval guidance and documentation.
Records are subject to review and correction. Source links, dates and verification notes should be read with the technical information. Our Editorial and Sourcing Policy explains our standards and review process.
Found an error or missing source? Report a problem with this page. Include the field or statement concerned and a supporting source if available. You can also email corrections@enginecode.uk.
Copyright and permissions
Images and other material may be protected by copyright. Attribution does not by itself grant permission to reuse material. If you believe material on this site infringes your rights, contact copyrights@enginecode.uk with the page URL and details of your claim. We will review the material and take appropriate action.
Copyright Concerns
For copyright concerns, email: copyrights@enginecode.uk
Our Privacy Policy explains how Engine Finders UK Ltd uses information from visits, vehicle lookups, enquiries and messages. Our Cookie Policy explains cookies and similar technologies and how to change your choices.
For access, correction, or deletion requests, email: gdpr@enginecode.uk
Trademark Notice
All trademarks, logos, and engine codes are the property of their respective owners. Use on this site is strictly for reference and identification.
Ownership and commercial services
EngineCode.uk is owned and operated by Engine Finders UK Ltd. Alongside our reference content, we offer an optional replacement-engine enquiry service through Engine Finders and may identify relevant services provided by businesses connected with us. These commercial connections are disclosed. Using an enquiry service is not required to read our reference content.
Engine Finders UK Ltd operates this website. Our optional enquiry service has a commercial purpose. Our Ownership and Commercial Disclosure explains the relationship between the reference website and that service. Participating suppliers pay a fee or subscription to participate on the network and receive quote requests.
Use this record as a starting point for identification. Specifications and vehicle applications may contain errors or omissions. Confirm the exact engine variant and compatibility using vehicle-specific documentation and a qualified supplier or technician.
All external links open in new tabs. Please verify current availability of resources.