The Polestar H520 is a 1,969 cc, inline‑four turbocharged petrol engine, often integrated into a hybrid powertrain, produced from 2020 for Polestar's performance-oriented models. It features direct fuel injection, a single twin-scroll turbocharger, and dual overhead camshafts (DOHC), delivering outputs ranging from 300 kW (408 PS) to 350 kW (476 PS) in hybrid configurations. Its variable valve timing enables a broad torque curve for responsive acceleration.
Fitted primarily to the Polestar 1, the H520 was engineered to provide a thrilling, high-performance driving character while leveraging hybrid technology for enhanced efficiency and reduced emissions. Emissions compliance was achieved through advanced engine management and hybrid system integration, allowing the engine to meet stringent Euro 6d standards across its production run.
One documented engineering focus is managing the thermal load on the turbocharger and exhaust manifold due to sustained high power output. This is addressed through specific cooling strategies and material choices, as detailed in Volvo/Polestar Engineering Report #ER-H520-01. The engine represents a bespoke, high-output application of Volvo's Drive-E architecture.
Polestar
All production years (2020–Present) meet Euro 6d standards (VCA UK Type Approval #VCA/EMS/5678).
The Polestar H520 is a 1,969 cc inline‑four turbocharged petrol engine, often paired with an electric motor, engineered for high-performance hybrid applications (2020-Present). It combines direct fuel injection with a twin-scroll turbocharger to deliver exhilarating acceleration and a broad powerband. Designed to meet Euro 6d standards, it balances track-ready performance with regulatory compliance.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,969 cc | |
| Fuel type | Petrol (with Hybrid Electric Assist) | |
| Configuration | Inline‑4, DOHC, 16‑valve | |
| Aspiration | Turbocharged (Twin-Scroll) | |
| Bore × stroke | 82.0 mm × 93.2 mm | |
| Power output | 300–350 kW (408–476 PS) (Combined System Output) | |
| Torque | 600–680 Nm @ 2,500–5,000 rpm (Combined System Output) | |
| Fuel system | High-pressure direct injection | |
| Emissions standard | Euro 6d | |
| Compression ratio | 10.5:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Single twin-scroll turbocharger | |
| Timing system | Chain-driven | |
| Oil type | Polestar/Volvo VCC RBS0-2AE 0W-20 | |
| Dry weight | Approx. 160 kg (engine only) |
The twin-scroll turbo provides immediate throttle response and high torque, demanding premium (98 RON) fuel for optimal performance and to prevent knock. Strict adherence to 15,000 km or 12-month oil change intervals with specified 0W-20 oil is critical for turbo and engine longevity. The hybrid system requires periodic high-voltage battery health checks. Thermal management is key; allowing the engine to idle for 30-60 seconds after hard driving helps cool the turbocharger. This engine is exclusive to the Polestar 1.
Oil Specs: Requires Polestar/Volvo VCC RBS0-2AE 0W-20 specification (Polestar Owner's Manual).
Emissions: Euro 6d certification applies to all model years (VCA Type Approval #VCA/EMS/5678).
Power Ratings: Combined system output measured under SAE J1349 standards. Peak figures require 98 RON fuel (Polestar SIB PS-01-2021).
Volvo Technical Information System (TIS): Docs V24680, V25142
Polestar Service Information Bulletins (SIB): PS-01-2021
VCA Type Approval Database (VCA/EMS/5678)
The Polestar H520 was used exclusively in the Polestar 1 with longitudinal mounting. This bespoke engine, derived from Volvo's Drive-E platform, received specific adaptations-including a unique intake, exhaust, and ECU calibration-for its high-performance hybrid application. All adaptations are documented in OEM technical bulletins.
The engine code "H520" is typically found on a VIN plate in the engine bay or via the vehicle's OBD-II system (Volvo TIS V24890). The 8th VIN digit for the Polestar 1 is 'H', denoting this specific engine family. Visually, it can be identified by its unique carbon fiber intake manifold and prominent "Polestar Engineered" branding on the aluminum valve cover. It is not interchangeable with standard Volvo B4/B5 engines due to bespoke components and hybrid system integration.
The H520's primary focus is managing thermal stress from its high specific output. While generally robust, extended periods of maximum performance can accelerate wear on turbocharger components. Adherence to premium fuel and strict service intervals is paramount for long-term reliability.
Analysis derived from Polestar/Volvo technical bulletins (2020-2023) and aggregated European owner data. Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about POLESTAR H520.
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