The Range Rover 18G is a 2,996 cc, inline‑six turbo‑charged petrol engine produced between 2018 and 2022. It features a twin‑scroll turbocharger, direct fuel injection, and variable valve timing (VVT) with DOHC architecture. In standard form it delivers 250 kW (340 PS) and 480 Nm of torque, enabling responsive daily performance with strong mid‑range pull.
Fitted to the L494 Range Rover Sport and L405 Range Rover, the 18G was engineered for smooth power delivery, refined…
All production years 2018–2022 meet Euro 6c emissions standards .
The Range Rover 18G is a 2,996 cc inline‑six turbo‑charged petrol engineered for full‑size luxury SUVs (2018–2022). It combines direct injection with a twin‑scroll turbocharger to deliver smooth, linear power and strong towing response. Designed to meet Euro 6c standards, it balances performance with stringent emissions control.
| Parameter | Value | Source |
|---|---|---|
Displacement | 2,996 cc | |
Fuel type | Petrol (ULP 95 RON min) | |
Configuration | Inline‑6, DOHC, 24‑valve | |
Aspiration | Turbocharged (twin‑scroll) | |
Bore × stroke | 82.0 mm × 94.0 mm | |
Power output | 250 kW (340 PS) @ 5,500 rpm | |
Torque | 480 Nm @ 1,500–4,500 rpm | |
Fuel system | Bosch HDEV5 direct injection (200 bar) | |
Emissions standard | Euro 6c | |
Compression ratio | 10.5:1 | |
Cooling system | Water‑cooled with dual electric fans | |
Turbocharger | Twin‑scroll (Honeywell Garrett) | |
Timing system | Chain (front‑mounted, low‑wear design) | |
Oil type | JLR STJLR.03.5037 (SAE 0W‑20) | |
Dry weight | 215 kg |
The Range Rover 18G was used across Land Rover's L405 and L494 platforms with longitudinal mounting and no third‑party licensing. This engine received platform-specific adaptations—revised engine mounts in the L494 Sport and updated cooling ducting in the L405—and from mid‑2020 the HPFP upgrade per JLR Service Action Notice, 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 18G offers smooth power and strong refinement, but early units (2018–mid‑2020) had HPFP cam follower wear concerns under frequent short-trip use. Post‑mid‑2020 revisions improved durability. With proper maintenance—especially oil changes and occasional highway driving—this engine can be very dependable.
Main issues include HPFP cam follower wear, GPF regeneration faults from low-speed driving, turbo actuator calibration drift, and minor front cover oil seepage. These are documented in JLR service bulletins and are generally manageable with correct servicing.
The 18G powers the P360 variant of the L405 Range Rover (2018–2022) and L494 Range Rover Sport (2018–2022). It is exclusive to Land Rover and not shared with other manufacturers.
Aftermarket ECU tuning is common on the 18G 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.
In a Range Rover P360, expect ~11.0 L/100km (city) and ~7.9 L/100km (highway), or about 29 mpg UK combined. Real-world mixed driving typically yields 26–30 mpg UK, depending on load and driving style.
Yes. Like all modern JLR engines, the 18G 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 HPFP lubrication. Change every 16,000 km or 12 months, whichever comes first.
Comprehensive technical documentation and regulatory references
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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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