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 NVH characteristics, and premium drivability. Emissions compliance is achieved through gasoline particulate filtration (GPF) and precise engine management, meeting Euro 6c standards across all markets.
One documented concern is premature wear of the high‑pressure fuel pump (HPFP) cam follower, noted in Jaguar Land Rover Service Action Notice JLR‑SAN‑2020‑07. This issue stems from insufficient lubrication under frequent short‑trip driving, leading to micro‑pitting on the cam lobe. From mid‑2020, JLR introduced a revised HPFP with improved follower geometry and hardened cam surfaces.
All production years 2018–2022 meet Euro 6c emissions standards (VCA UK Type Approval #VCA/EMS/4321).
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 twin‑scroll turbo provides responsive, lag‑free power ideal for urban and highway driving, but requires strict adherence to 16,000 km or 12‑month oil change intervals to protect the high‑pressure fuel pump and turbo bearings. JLR‑approved 0W‑20 oil is critical due to its low‑viscosity formulation for variable valve timing actuators and chain lubrication. Frequent short trips without engine warm‑up can accelerate HPFP cam follower wear. Post‑mid‑2020 engines feature an upgraded HPFP and hardened cam per JLR SAN 2020‑07. The GPF system mandates occasional sustained highway driving to prevent soot accumulation and regeneration faults.
Oil Specs: Requires JLR STJLR.03.5037 (0W‑20) specification (JLR Owner Handbook L405‑2019). Equivalent to ACEA C5 but with tighter volatility limits.
Emissions: Euro 6c certification applies to all 2018–2022 models (VCA Type Approval #VCA/EMS/4321). Confirmed compliance across EU/UK markets.
Power Ratings: Measured under ISO 1585 standards. Peak output requires 95 RON minimum fuel (JLR PT‑2021).
Jaguar Land Rover Technical Information System (TIS): Docs P30A‑18G, ES‑18G‑2018
VCA Type Approval Database (VCA/EMS/4321)
ISO 1585: Road vehicles — Engine test code
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.
Locate the engine code stamped on the left-side cam cover near the oil filler cap (JLR TIS P30A‑18G). The 7th VIN digit for P360 models is 'G' (indicating Ingenium 3.0L petrol). All 18G units use black valve covers with integrated ignition coils. Critical differentiation from diesel variants: petrol engines have a visible turbo inlet pipe and lack EGR coolers. HPFP part number 18G‑9A391‑AA denotes pre‑mid‑2020 units; post‑mid‑2020 uses 18G‑9A391‑AB per JLR SAN 2020‑07.
The 18G's primary reliability risk is high-pressure fuel pump (HPFP) cam follower wear, with elevated incidence in vehicles used predominantly for short urban trips. JLR internal field data from 2021 indicated a measurable uptick in HPFP-related DTCs before 70,000 km in pre‑mid‑2020 builds, while UK DVSA records show minimal emissions-related failures due to robust GPF control. Inadequate warm-up cycles increase thermal and mechanical stress on the cam-follower interface, making driving pattern and service adherence critical.
Analysis derived from Jaguar Land Rover technical bulletins (2018–2022) and UK DVSA failure statistics (2018–2022). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about RANGE-ROVER 18G.
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Regulation (EC) No 715/2007
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Commission Regulation (EU) 2017/1151
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