The Polestar H630T2 is a 2,998 cc, twin-turbocharged inline-six petrol engine, integrated into a plug-in hybrid system, produced from 2023 for flagship performance models. It features a DOHC 24-valve design, direct fuel injection, and twin mono-scroll turbochargers mounted in a 'hot-V' configuration between the cylinder banks. This engine, derived from Volvo's advanced Drive-E architecture, delivers immense, sustained power with minimal lag, where the 'hot-V' layout enables rapid turbo spool for immediate throttle response.
Fitted exclusively to the high-performance Polestar 3 SUV, the H630T2 was engineered for effortless high-speed cruising and track-capable dynamics. Emissions compliance is achieved through its hybrid electric assist and sophisticated engine management, meeting the stringent Euro 6d standards across all markets.
One documented engineering focus was managing the extreme thermal and mechanical loads inherent in its 600+ PS output. This is addressed in Volvo Group Technical Service Bulletin TJB‑2023, which details specific calibration protocols and reinforced internal components for sustained high-RPM operation.
All production years (2023–Present) meet Euro 6d standards (VCA UK Type Approval #VCA/EMS/8910).
The Polestar H630T2 is a 2,998 cc twin-turbocharged inline‑six petrol engine, paired with a plug-in hybrid system, engineered for flagship performance SUVs (2023-Present). It combines direct fuel injection with a 'hot-V' twin-turbo layout to deliver immense, linear power and minimal lag. Designed to meet Euro 6d standards, it balances extreme performance with regulatory compliance.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 2,998 cc | |
| Fuel type | Petrol (98 RON premium recommended) | |
| Configuration | Inline‑6, DOHC, 24‑valve | |
| Aspiration | Twin-Turbocharged (Hot-V) | |
| Bore × stroke | 82.0 mm × 93.2 mm | |
| Power output | 380 kW (517 PS) engine only; 380 kW + 120 kW (655 PS combined) | |
| Torque | 620 Nm (engine) @ 2,100–5,400 rpm; 840 Nm (combined) | |
| Fuel system | High-pressure direct injection (Bosch HDEV6) | |
| Emissions standard | Euro 6d | |
| Compression ratio | 10.3:1 | |
| Cooling system | Water‑cooled with auxiliary electric pumps | |
| Turbocharger | Twin mono-scroll turbos (Hot-V configuration) | |
| Timing system | Chain-driven | |
| Oil type | Volvo VCC RBS0-2AE 0W-20 | |
| Dry weight | 215 kg (engine only) |
The 'hot-V' twin-turbo layout provides immense, lag-free power ideal for high-speed overtaking and track use, but demands 98 RON premium fuel for optimal performance and knock protection. Strict adherence to 15,000 km or 12-month oil changes with Volvo VCC RBS0-2AE 0W-20 is non-negotiable for turbo and chain longevity. The extreme output necessitates allowing the engine to idle for 60-90 seconds after hard driving to cool critical components, as per Volvo SIB TJB-2023. The integrated high-voltage hybrid system requires certified technicians and specialized diagnostic tools for any service.
Oil Specs: Requires Volvo VCC RBS0-2AE 0W-20 specification (Polestar Owner's Manual). This low-viscosity oil is mandatory for the engine's variable valve timing system and turbo bearing lubrication.
Emissions: Euro 6d certification applies to all model years (VCA Type Approval #VCA/EMS/8910).
Power Ratings: Measured under SAE J1349 standards. Combined system output includes 120 kW from the rear electric motor (Volvo TIS Doc. V31000).
Volvo Technical Information System (TIS): Docs V30001, V30555, V31000, SIB TJB-2023
VCA Type Approval Database (VCA/EMS/8910)
SAE International: J1349 Engine Power Certification Standards
The Polestar H630T2 is the internal combustion component used exclusively in Polestar's flagship Polestar 3 SUV with longitudinal mounting. This engine received unique platform-specific adaptations-including a bespoke engine mount system and specific hybrid power electronics integration-and is not shared with any Volvo models, creating absolute interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the front of the cylinder block, near the timing cover (Volvo TIS V30200). The 8th digit of the VIN for Polestar 3 is 'H', indicating the H630T2 engine. Critical differentiation from any Volvo engine: The H630T2 is unique to the Polestar 3 and features a distinctive 'hot-V' turbo layout not found in any Volvo production engine. Service parts, particularly for the turbochargers, intake manifold, and hybrid integration components, are specific to the Polestar 3 application and not interchangeable with other models (Volvo SIB TJB-2023).
The H630T2's primary reliability consideration is thermal management of its 'hot-V' turbochargers and associated exhaust components under extreme load. Volvo internal durability reports indicate these systems are engineered for high stress, while early field data shows no significant failure patterns. Extended high-RPM operation or track use without proper cool-down cycles can accelerate wear, making adherence to post-drive idle procedures critical.
Analysis derived from Volvo technical bulletins (2023-Present) and early field service reports. Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about POLESTAR H630T2.
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