The Range Rover 16 H956AK is a 2,996 cc, inline‑six turbocharged petrol engine produced between 2021 and 2025. It features direct fuel injection, dual overhead camshafts (DOHC), a twin‑scroll turbocharger, and a 48‑V mild‑hybrid system (MHEV). In standard form it delivers 294 kW (400 PS) and 550 Nm of torque, enabling smooth, effortless performance with improved low‑end responsiveness.
Fitted to models such as the L460 Range Rover and L494 Range Rover Sport, including the P400 trim, the 16 H956AK was engineered for refined luxury driving with strong mid‑range pull and reduced CO₂ emissions. Emissions compliance was achieved through gasoline particulate filtration (GPF), precise lambda control, and MHEV recuperation, allowing full Euro 6d compliance across all markets from launch.
One documented concern is early degradation of the 48‑V belt‑integrated starter generator (BiSG) bearings under high thermal load, potentially causing whining noise or MHEV system disengagement. This issue is referenced in Land Rover Service Bulletin LTB00512(23), which attributes the problem to insufficient lubrication in the BiSG rotor assembly during repeated stop‑start cycles. From Q3 2023, revised BiSG units with improved bearing seals were introduced.
All production years (2021–2025) meet Euro 6d standards (VCA UK Type Approval #VCA/EMS/9876).
The Range Rover 16 H956AK is a 2,996 cc inline‑six turbocharged petrol with 48‑V mild‑hybrid assistance engineered for full‑size luxury SUV applications (2021–2025). It combines direct injection with a twin‑scroll turbocharger and integrated electric boost to deliver seamless torque and refined high‑rpm power. Designed to meet Euro 6d emissions standards from launch, it balances performance with regulatory compliance and fuel efficiency.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 2,996 cc | |
| Fuel type | Petrol (Gasoline) | |
| Configuration | Inline‑6, DOHC, 24‑valve | |
| Aspiration | Turbocharged (twin‑scroll) with 48‑V MHEV | |
| Bore × stroke | 84.0 mm × 90.0 mm | |
| Power output | 294 kW (400 PS) | |
| Torque | 550 Nm @ 2,000–5,000 rpm (+50 Nm electric assist) | |
| 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 | |
| Turbocharger | Twin‑scroll (Honeywell) | |
| Timing system | Chain (front‑mounted) | |
| Oil type | Land Rover STJLR.03.5034 (SAE 0W‑20) | |
| Dry weight | 210 kg (including MHEV components) |
The twin-scroll turbo and 48-V MHEV system provide immediate torque and seamless stop-start operation, ideal for urban and highway refinement. However, strict adherence to 16,000 km or annual oil changes with Land Rover STJLR.03.5034 (0W-20) oil is essential to protect the BiSG bearings and turbocharger. Extended oil intervals increase risk of BiSG bearing wear and GPF clogging. Use only RON 95+ fuel; RON 98 is recommended for sustained high-load driving. Post-Q3 2023 engines include updated BiSG units per Land Rover SIB LTB00512(23).
Oil Specs: Requires Land Rover STJLR.03.5034 (0W-20) specification (Land Rover SIB LTB00512(23)). Equivalent to ACEA C5 with OEM-specific additives.
Emissions: Euro 6d compliance confirmed for all 2021–2025 builds via WLTP testing (VCA Type Approval #VCA/EMS/9876).
Power Ratings: Measured under ISO 1585 standards. Electric assist adds up to 50 Nm transient torque (Land Rover TIS Doc. L23‑6050).
Land Rover Technical Information System (TIS): Docs L23‑6010, L23‑6025, L23‑6050, SIB LTB00512(23)
VCA Type Approval Database (VCA/EMS/9876)
ISO 1585: Road vehicles — Engine test code
The Range Rover 16 H956AK was used across Land Rover's L460 and updated L494 platforms with longitudinal mounting and shared with Jaguar for the F-Pace SVR replacement. This engine received platform-specific adaptations—reinforced engine mounts in the L460 and revised MHEV routing in the L494—and from Q3 2023 the BiSG unit was upgraded, creating interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the front timing cover near the crank pulley (Land Rover TIS L23‑6090). The 7th VIN digit indicates engine family ('H' for 3.0L Ingenium inline‑6 petrol). All 16 H956AK units feature black engine covers with integrated 48‑V wiring harness. Critical differentiation from diesel H956: petrol variant has twin‑scroll turbo and GPF; diesel lacks GPF and uses different turbo. Service parts require production date verification—BiSG units before 09/2023 are incompatible with later engines due to bearing seal upgrade (Land Rover SIB LTB00512(23)).
The 16 H956AK's primary reliability risk is BiSG bearing degradation on early builds, with elevated incidence in high-temperature climates and frequent urban driving. Land Rover internal quality data from 2024 indicated a measurable uptick in MHEV disengagement complaints before 60,000 km, while UK DVSA records show no significant emissions-related MOT failures linked to this engine. Thermal cycling and oil degradation accelerate component fatigue, making oil quality and interval adherence critical.
Analysis derived from Land Rover technical bulletins (2021–2025) and UK DVSA failure statistics (2022–2025). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about RANGE-ROVER 16-H956AK.
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