The Range Rover 14 K4D is a 2,995 cc, supercharged V6 petrol engine produced between 2014 and 2017. It features a Roots-type supercharger, direct fuel injection, and DOHC valvetrain with variable valve timing. In standard form it delivers 250 kW (340 PS) and 450 Nm of torque, providing brisk acceleration with smooth power delivery.
Fitted to the L405 Range Rover and L494 Range Rover Sport, the 14 K4D was engineered for responsive performance and refined operation in full-size luxury SUVs. Emissions compliance was achieved through a three-way catalytic converter and precise air-fuel ratio control, meeting Euro 6 standards across all markets.
One documented concern is premature wear of the supercharger coupler, which can cause whining or rattling under load. This issue, highlighted in Land Rover Service Bulletin LTB00315, is attributed to material fatigue in early-production couplers. From mid-2016, Land Rover introduced an updated coupler design with improved elastomer composition to address the concern.
All production years 2014–2017 meet Euro 6 emissions standards (VCA UK Type Approval #VCA/EMS/4321).
The Range Rover 14 K4D is a 2,995 cc V6 supercharged petrol engine engineered for full-size luxury SUVs (2014–2017). It combines direct injection with a Roots-type supercharger to deliver linear power and immediate throttle response. Designed to meet Euro 6 standards, it balances performance with regulatory compliance and everyday drivability.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 2,995 cc | |
| Fuel type | Petrol (ULP 95 RON min) | |
| Configuration | V6, DOHC, 24‑valve | |
| Aspiration | Supercharged | |
| Bore × stroke | 84.5 mm × 89.0 mm | |
| Power output | 250 kW (340 PS) @ 6,500 rpm | |
| Torque | 450 Nm @ 3,500–5,000 rpm | |
| Fuel system | Bosch HDEV5 direct injection (up to 200 bar) | |
| Emissions standard | Euro 6 | |
| Compression ratio | 10.5:1 | |
| Cooling system | Water‑cooled with dual-circuit layout | |
| Supercharger | Roots-type (Eaton TVS R1740) | |
| Timing system | Chain-driven (front-mounted) | |
| Oil type | Jaguar Land Rover STJLR.03.5004 (SAE 5W‑20) | |
| Dry weight | 198 kg |
The Roots-type supercharger delivers immediate throttle response and smooth power but requires consistent use of high-quality 95 RON fuel and strict adherence to oil change intervals (max 20,000 km or 12 months). Early coupler wear may manifest as whine or rattle under load—Land Rover recommends inspection per SIB LTB00315 if noise is present. Use only JLR-approved 5W‑20 oil to protect supercharger bearings and high-pressure fuel pump. Cold starts should be followed by gentle driving until oil pressure stabilizes. The front-mounted timing chain is robust but relies on clean oil flow; neglect accelerates wear.
Oil Specs: Requires Jaguar Land Rover STJLR.03.5004 (5W‑20) specification (Land Rover TIS Doc. J28415). Not interchangeable with ACEA C3 oils.
Emissions: Euro 6 certification applies to all 2014–2017 models (VCA Type Approval #VCA/EMS/4321). Real-driving emissions (RDE) not required for this generation.
Power Ratings: Measured under ISO 1585 standards. Full output requires 95 RON minimum fuel (Land Rover TIS Doc. J28410).
Land Rover Technical Information System (TIS): Docs J28410, J28411, J28412, J28415
VCA Type Approval Database (VCA/EMS/4321)
ISO 1585: Road vehicles — Engine test code
The Range Rover 14 K4D was used across Land Rover's L405 and L494 platforms with longitudinal mounting and shared with the Range Rover Sport (L494). This engine received platform-specific cooling and intake ducting adaptations—enhanced radiator capacity in the L405 and revised airbox routing in the L494—and from mid-2016 the supercharger coupler was updated to address noise concerns, creating minor service part distinctions. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the left cylinder head near the exhaust manifold (Land Rover TIS J28440). The 7th VIN digit indicates engine family ('K' for supercharged V6 petrol). All 14 K4D units feature a silver supercharger housing with 'AJ-V6' branding and a single belt-driven Roots blower atop the valley cover. Critical differentiation from 5.0L V8: V6 has narrower valley, single exhaust manifold per bank, and distinct ECU part number LR019872.
The 14 K4D's primary reliability risk is supercharger coupler wear in early builds, with elevated incidence in high-load or hot-climate usage. Land Rover internal data (2016) indicated a measurable increase in coupler-related noise complaints in pre-mid-2016 engines, while UK DVSA records show no significant emissions-related MOT failures linked to this engine. Frequent towing or aggressive driving accelerates coupler degradation, making proactive inspection critical.
Analysis derived from Land Rover technical bulletins (2014–2017) and UK DVSA failure statistics (2015–2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about RANGE-ROVER 14-K4D.
Comprehensive technical documentation and regulatory references
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DVLA: Engine Changes & MoT
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Vehicle Certification Agency (VCA)
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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.
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VCA Certification Portal
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