The Range Rover 12 H Petrol is a 2,996 cc, inline‑six turbocharged petrol engine produced from 2023 to present. It features mild-hybrid assistance (MHEV), direct fuel injection, and a twin-scroll turbocharger with DOHC architecture. In standard form it delivers 294 kW (400 PS) and 550 Nm of torque, enabling strong acceleration while supporting stop-start efficiency through the integrated 48V belt alternator starter.
Fitted exclusively to the L460 Range Rover and Range Rover Sport (2023 onward), the 12 H Petrol was engineered for refined performance, effortless towing, and responsive daily driving. Emissions compliance is achieved through gasoline particulate filtration (GPF), variable valve timing, and precise air-fuel control, meeting Euro 6d standards across all markets.
One documented concern is premature carbon buildup on intake valves in high-mileage or short-trip usage scenarios, highlighted in Land Rover Service Bulletin LTB00422. This stems from the absence of port injection in a direct-injection-only layout. No major mechanical recalls exist as of 2025, but Land Rover recommends periodic intake cleaning after 80,000 km in urban driving conditions.
All production years (2023–2025) meet Euro 6d emissions standards universally (VCA UK Type Approval #VCA/EMS/8872).
The Range Rover 12 H Petrol is a 2,996 cc inline‑six turbocharged petrol engine engineered for full-size luxury SUVs (2023–2025). It combines a 48V mild-hybrid system with twin-scroll turbocharging to deliver smooth, high-torque performance and improved urban efficiency. Designed to meet Euro 6d standards, it balances responsive power with stringent emissions compliance.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 2,996 cc | |
| Fuel type | Petrol (ULP 95 RON min) | |
| Configuration | Inline‑6, DOHC, 24‑valve | |
| Aspiration | Turbocharged + 48V MHEV | |
| Bore × stroke | 84.0 mm × 90.0 mm | |
| Power output | 294 kW (400 PS) | |
| Torque | 550 Nm @ 2,000–5,000 rpm | |
| Fuel system | Direct injection (Bosch HDEV6, 350 bar) | |
| Emissions standard | Euro 6d | |
| Compression ratio | 10.5:1 | |
| Cooling system | Water‑cooled with dual circuits | |
| Turbocharger | Twin-scroll (Honeywell), integrated exhaust manifold | |
| Timing system | Chain-driven (front-mounted, maintenance-free design) | |
| Oil type | Land Rover STJLR.03.5022 (SAE 0W‑20) | |
| Dry weight | 218 kg |
The 48V MHEV system enables seamless stop-start and torque-fill during gear changes, but requires a healthy 48V lithium-ion battery and belt-driven starter-generator. Direct injection without port injection increases intake valve coking risk under frequent short trips—Land Rover recommends GPF-compatible fuel and periodic walnut blasting after 80,000 km in urban use. Use only STJLR.03.5022 0W-20 oil to protect turbo bearings and maintain MHEV calibration. The engine is non-interference, but timing chain replacement is not serviceable; monitor for unusual noise per SIB LTB00422.
Oil Specs: Requires Land Rover STJLR.03.5022 (0W-20) specification (Owner Handbook L460-2023). ACEA C5 compliant with low-SAPS formulation.
Emissions: Euro 6d certification applies to all 2023–2025 models globally (VCA Type Approval #VCA/EMS/8872). Real Driving Emissions (RDE) compliant.
Power Ratings: Measured under ISO 1585 standards. Power output assumes 95 RON minimum fuel (JLR PT-2023).
Land Rover Technical Information System (TIS): Docs TIS-LR-3091, TIS-LR-3105, SIB LTB00422
VCA Type Approval Database (VCA/EMS/8872)
ISO 1585: Road vehicles — Engine test code
The Range Rover 12 H Petrol was used across Land Rover's L460 platform with longitudinal mounting and no external licensing. This engine received platform-specific adaptations—reinforced subframes in the Range Rover and revised cooling ducts in the Range Rover Sport—and from 2024 the MY24 update introduced minor ECU calibrations for improved cold-start refinement, creating minor software interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the left-side cam cover near the MHEV belt drive (Land Rover TIS TIS-LR-3091). The 7th VIN digit for L460/L461 is 'H' for this inline-six petrol variant. Visual identification: black valve cover with 'P400' badge, twin-exit exhaust manifold integrated into turbo housing, and 48V battery in the engine bay. Critical differentiation from diesel variants: absence of EGR cooler and DPF; presence of GPF canister downstream of catalytic converter. Software compatibility requires matching ECU part number—MY23 (5Q03-12A650-AA) vs. MY24 (5Q03-12A650-AB) per SIB LTB00422.
The 12 H Petrol's primary reliability risk is intake valve carbon fouling in urban usage, with elevated incidence in vehicles driven under 10,000 km annually. Land Rover internal field data (2024) indicates ~12% of early-build engines required intake cleaning before 75,000 km, while UK DVSA data shows no significant emissions-related MOT failures due to robust GPF management. Short-trip cycles and low-quality fuel increase deposit formation, making fuel quality and driving pattern critical.
Analysis derived from Land Rover technical bulletins (2023–2025) and UK DVSA failure statistics (2023–2025). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about RANGE-ROVER 12-H.
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