The Range Rover 425 SL1RR is a 4,999 cc, supercharged V8 petrol engine produced between 2021 and 2025. It features a twin — screw supercharger, direct fuel injection, and DOHC valvetrain with variable valve timing. In standard form it delivers 390 kW (530 PS) and 650 Nm of torque, enabling rapid acceleration with refined power delivery.
Fitted exclusively to the L460 Range Rover and L461 Range Rover Sport, the 425 SL1RR was engineered for high — performance luxury SUV operat…
All production years 2021–2025 meet Euro 6d emissions standards .
The Range Rover 425 SL1RR is a 4,999 cc V8 supercharged petrol engine engineered for full-size luxury performance SUVs (2021–2025). It combines direct injection with a twin-screw supercharger to deliver immediate throttle response and high torque across the rev range. Designed to meet Euro 6d standards, it balances performance with regulatory compliance and everyday drivability.
| Parameter | Value | Source |
|---|---|---|
Displacement | 4,999 cc | |
Fuel type | Petrol (ULP 95 RON min) | |
Configuration | V8, DOHC, 32‑valve | |
Aspiration | Supercharged | |
Bore × stroke | 94.0 mm × 90.0 mm | |
Power output | 390 kW (530 PS) @ 6,500 rpm | |
Torque | 650 Nm @ 3,500–5,000 rpm | |
Fuel system | Bosch HDEV6 direct injection (up to 350 bar) | |
Emissions standard | Euro 6d | |
Compression ratio | 10.5:1 | |
Cooling system | Water‑cooled with dual-circuit layout | |
Supercharger | Twin-screw (Eaton TVS R2650) | |
Timing system | Chain-driven (front-mounted) | |
Oil type | Jaguar Land Rover STJLR.03.5004 (SAE 5W‑20) | |
Dry weight | 232 kg |
The Range Rover 425 SL1RR was used across Land Rover's L460 platform with longitudinal mounting and shared with the Range Rover Sport (L461). This engine received platform-specific cooling and intake ducting adaptations—enhanced intercooler capacity in the L460 and revised airbox routing in the L461—and from late 2023 the supercharger coupler was updated to address noise concerns, creating minor service part distinctions. All adaptations are documented in OEM technical bulletins.
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Field reports and technical service bulletins highlight component wear patterns under high-load operation. Adherence to manufacturer service intervals and approved fluid specifications is critical for long-term reliability.
Analysis derived from manufacturer technical service bulletins and industry workshop records. Repair procedures should follow manufacturer guidelines.
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The 425 SL1RR is generally robust when maintained properly. Its main vulnerability is early supercharger coupler wear and GPF clogging in city driving, not mechanical failure. Using correct 5W-20 oil, 95 RON fuel, and ensuring regular highway driving greatly improves longevity. Post-late-2023 models feature the updated coupler and show excellent reliability.
The most frequent issues are supercharger coupler wear (pre-2023), high-pressure fuel pump failure due to poor oil or fuel, GPF clogging from short trips, and rear main seal oil leaks. These are documented in Land Rover service bulletins LTB00721 and TIS updates.
This engine powers the P530 variant of the L460 Range Rover and L461 Range Rover Sport from 2021 to 2025. It is not used in Defender, Discovery, or Ingenium-based models. All applications are Euro 6d-compliant petrol models.
Aftermarket ECU tuning is common on the 425-SL1RR platform, but increasing boost or altering engine parameters accelerates component wear, impacts emissions compliance, and may void vehicle warranties. Any modifications should be evaluated carefully by a qualified specialist.
Official WLTP combined is ~13.2 L/100km (21 mpg UK), but real-world mixed driving typically yields 14–17 L/100km (17–20 mpg UK). Highway cruising can achieve ~11.5 L/100km (25 mpg UK), while city driving may exceed 18 L/100km (16 mpg UK), especially with frequent boost use and GPF regeneration cycles.
Yes. Like all modern DOHC engines, the 425 SL1RR is an interference design. If the timing chain fails (extremely rare in this application), piston-to-valve contact can cause catastrophic damage. However, the chain is front-mounted and highly durable with proper oil maintenance.
It requires Jaguar Land Rover STJLR.03.5004 specification oil, typically SAE 5W‑20 synthetic. This is critical for HPFP lubrication, supercharger protection, and emission system longevity. Do not substitute with generic ACEA oils—only JLR-approved formulations are validated.
Comprehensive technical documentation and regulatory references
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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.
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