The Polestar H630 is a 2,998 cc, inline‑six twin‑turbocharged petrol engine, integrated into a plug-in hybrid powertrain, produced from 2024 onwards. It features twin mono-scroll turbochargers, direct fuel injection, and a rear-mounted electric motor to deliver exceptional power and near-instant torque. Variable valve timing (VVT) and an advanced engine management system ensure optimal efficiency and a linear power delivery across the rev range.
Fitted exclusively to the high-performance Polestar 4, the H630 was engineered to provide a thrilling, GT-like driving experience with zero-emission capability for urban use. Emissions compliance is achieved through its hybrid architecture, a sophisticated three-way catalytic converter, and strict engine calibration, meeting stringent Euro 6d standards.
One documented area of focus is the thermal management of the high-output electric motor and power electronics. As noted in Volvo Group Service Bulletin TJB‑442, sustained high-load driving can trigger thermal protection protocols, temporarily limiting hybrid boost. Polestar has issued over-the-air (OTA) software updates to optimize cooling fan control strategies and power distribution logic.
Production years 2024–Present meet Euro 6d standards across all markets (VCA UK Type Approval #VCA/EMS/6789).
The Polestar H630 is a 2,998 cc inline‑six twin-turbo petrol hybrid engineered for premium performance SUVs (2024-Present). It combines direct injection with twin mono-scroll turbochargers and a rear electric motor to deliver explosive acceleration and refined cruising. Designed to meet Euro 6d, it balances ultimate performance with regulatory compliance.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 2,998 cc | |
| Fuel type | Petrol (98 RON recommended) | |
| Configuration | Inline‑6, DOHC, 24‑valve | |
| Aspiration | Twin-turbocharged (sequential) | |
| Bore × stroke | 84.0 mm × 90.0 mm | |
| Power output | 485 kW (659 PS) combined system output | |
| Torque | 950 Nm combined system torque | |
| Fuel system | High-pressure direct injection (Bosch) | |
| Emissions standard | Euro 6d | |
| Compression ratio | 10.2:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Twin mono-scroll turbos (Mitsubishi Heavy Industries) | |
| Timing system | Chain-driven | |
| Oil type | Volvo VCC RBS0-2AE 0W-20 | |
| Dry weight | Not Publicly Available |
The twin-turbo setup and electric motor provide immense, lag-free power, but demand premium 98 RON fuel for optimal performance and emissions control. The specified 0W-20 oil is critical for protecting the turbo bearings and ensuring the hybrid system operates efficiently. Software updates for the thermal management system are essential and should be performed via OTA or at official service centers as per Volvo SIB TJB-442. The battery requires periodic high-voltage system checks.
Oil Specs: Requires Volvo VCC RBS0-2AE 0W-20 specification (Polestar Owner's Manual MY25).
Emissions: Euro 6d certification applies to all 2024–Present models (VCA Type Approval #VCA/EMS/6789).
Power Ratings: Combined system output measured under SAE J1349 standards (Polestar Performance Data Sheet MY25).
Volvo Technical Information System (TIS): Docs VH630-01, VH630-02
VCA Type Approval Database (VCA/EMS/6789)
SAE International: J1349 Engine Power Certification Standards
The Polestar H630 is used exclusively in Polestar's Polestar 4 platform with longitudinal mounting. This engine is part of a bespoke high-performance hybrid powertrain developed by Volvo Cars and Polestar, with no licensed applications to other manufacturers. All adaptations are documented in OEM technical bulletins.
The engine code 'H630' is electronically stored in the vehicle's ECU and can be retrieved via OBD-II diagnostics. It is not physically stamped on the engine block. The 7th and 8th characters of the VIN for Polestar 4 models with this engine are '63'. Visually, the engine bay features twin turbochargers, a large intercooler, and is paired with a rear electric motor, distinguishing it from other Polestar engines. Service parts are specific to the Polestar 4 Performance Pack and are not interchangeable.
The H630's primary reliability consideration is thermal management of its high-performance hybrid system, with potential for software-induced power limitation. Volvo Group internal data indicates a low incidence of thermal events under extreme conditions, while UK DVSA records show no significant pattern of mechanical failures. Ensuring all software updates are current is the most critical preventative measure.
Analysis derived from Volvo technical bulletins (2024-2025) and UK DVSA failure statistics (2024-2025). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about POLESTAR H630.
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