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…
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 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.
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.
The most common questions about engine codes, what they mean, how to find them and how this database works
The 16 H956AK offers refined, powerful performance with MHEV efficiency, but early models (2021–2023) had BiSG bearing concerns. Q3 2023 revisions improved durability. With proper maintenance—especially oil changes using 0W-20 STJLR.03.5034—well-cared-for examples can exceed 200,000 km reliably.
Top issues include BiSG bearing wear, GPF clogging from short trips, high-pressure fuel pump failures, and 48‑V system voltage instability. These are documented in Land Rover SIB LTB00512(23) and TIS service procedures. Oil quality and driving pattern significantly influence longevity.
The 16 H956AK powers the Range Rover (L460, 2021–2025) and Range Rover Sport (L494, 2022–2025) in P400 trim. It’s also used in the Jaguar F-Pace P400 (2022–2025). All meet Euro 6d emissions with GPF, twin-scroll turbo, and 48‑V mild-hybrid technology.
Yes. Stage 1 ECU remaps typically yield +30–50 kW safely, leveraging the robust inline‑6 architecture and MHEV torque fill. Stage 2 upgrades (intercooler, exhaust) can reach 350+ kW. However, aggressive tuning without supporting mods may accelerate HPFP or turbo wear.
In a Range Rover P400, expect ~11.2 L/100km (city) and ~8.0 L/100km (highway), or ~32 mpg UK combined. Real-world mixed driving typically yields 28–35 mpg UK. MHEV system improves urban economy but adds weight affecting highway figures slightly.
Yes. The 16 H956AK is an interference engine. If the timing chain jumps or fails, piston-to-valve contact can cause catastrophic damage. Prompt attention to any timing-related fault codes is essential to prevent engine destruction.
Land Rover specifies 0W-20 synthetic oil meeting STJLR.03.5034 (or newer). This low-viscosity, low-SAPS oil protects the GPF and ensures proper BiSG and chain lubrication. Change intervals should not exceed 16,000 km or 12 months.
Comprehensive technical documentation and regulatory references
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RANGE-ROVER Official Site
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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
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