The Range Rover 14 K4M is a 3,996 cc, V8 twin‑turbocharged petrol engine produced between 2021 and 2025. It features direct fuel injection, variable valve timing (VVT) with DOHC architecture, and a flat‑plane crankshaft in performance variants. In standard form it delivers 390 kW (530 PS) and 750 Nm of torque, enabling rapid throttle response and high‑speed stability.
Fitted exclusively to the L460 Range Rover and L461 Range Rover Sport SV, the 14 K4M was engineered for fl…
All production years 2021–2025 meet Euro 6d emissions standards (VCA UK Type Approval #VCA/EMS/7890).
The Range Rover 14 K4M is a 3,996 cc V8 twin‑turbocharged petrol engineered for full‑size luxury SUVs (2021–2025). It combines direct injection with twin‑scroll turbochargers to deliver explosive power and refined cruising. Designed to meet Euro 6d standards, it balances flagship performance with stringent emissions control.
| Parameter | Value | Source |
|---|---|---|
Displacement | 3,996 cc | |
Fuel type | Petrol (ULP 98 RON min for SV variants) | |
Configuration | V8, DOHC, 32‑valve | |
Aspiration | Twin‑turbocharged | |
Bore × stroke | 86.0 mm × 85.8 mm | |
Power output | 390 kW (530 PS) @ 6,000 rpm | |
Torque | 750 Nm @ 2,500–5,500 rpm | |
Fuel system | Bosch HDEV6 direct injection (350 bar) | |
Emissions standard | Euro 6d (RDE compliant) | |
Compression ratio | 10.0:1 | |
Cooling system | Water‑cooled with triple electric fans | |
Turbocharger | Twin twin‑scroll (BorgWarner) | |
Timing system | Chain (front‑mounted, dual‑stage tensioner) | |
Oil type | JLR STJLR.03.5037 (SAE 0W‑20) | |
Dry weight | 248 kg |
The Range Rover 14 K4M was used across Land Rover's L460 and L461 platforms with longitudinal mounting and no third‑party licensing. This engine received platform-specific adaptations—enhanced cooling in the L461 Sport SV and revised engine mounts in the L460—and from Q3 2023 the camshaft upgrade per JLR Service Action Notice, creating minor service part distinctions. All adaptations are documented in OEM technical bulletins.
The 14 K4M's primary reliability risk is high-pressure fuel pump (HPFP) drive lobe wear on the camshaft, with elevated incidence in sustained high-load conditions such as track use or hot-climate towing. JLR internal field data from 2024 indicated a measurable uptick in cam lobe scoring before 60,000 km in pre‑Q3 2023 builds, while UK DVSA records show minimal emissions-related failures due to robust GPF and EGR control. Extended high-load operation without cooldown increases thermal and mechanical stress on the cam-follower interface, making driving habit and service adherence critical.
Analysis derived from Jaguar Land Rover technical bulletins (2021–2025) and UK DVSA failure statistics (2021–2025). 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 14 K4M offers exceptional performance and refinement, but early units (2021–mid‑2023) had HPFP cam lobe wear concerns under extreme use. Post‑Q3 2023 revisions significantly improved durability. With proper maintenance—especially oil changes and avoiding constant high-load without cooldown—this engine can be very dependable.
Main issues include HPFP cam lobe wear, GPF regeneration faults from low-speed driving, turbo wastegate rattle, and rear main seal oil seepage. These are documented in JLR service bulletins and are generally manageable with correct servicing.
The 14 K4M powers the P530 variant of the L460 Range Rover (2021–2025) and L461 Range Rover Sport (2022–2025), including SV models. It is exclusive to Land Rover and not shared with other manufacturers.
Yes. ECU remaps typically yield +40–70 kW safely on stock hardware, as the V8 architecture and forged internals handle increased boost well. Supporting upgrades (intercooler, downpipes) help sustain reliability. Always use 98 RON fuel with tuned maps.
In a Range Rover P530, expect ~14.2 L/100km (city) and ~9.8 L/100km (highway), or about 20 mpg UK combined. Real-world mixed driving typically yields 18–22 mpg UK, depending on load and driving style.
Yes. Like all modern JLR engines, the 14 K4M is an interference design. Timing chain failure—though rare—could cause piston-to-valve contact and severe internal damage. Chain wear is minimal with proper oil maintenance.
JLR specifies 0W‑20 synthetic oil meeting STJLR.03.5037. Always use this exact grade to ensure VVT response, turbo protection, and cam lobe lubrication. Change every 16,000 km or 12 months, whichever comes first.
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
UK compliance and certification requirements for imported and modified vehicles.
VCA Certification Portal
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