The Range Rover 12 HA83AA is a 2,996 cc, inline‑six turbocharged petrol engine produced between 2023 and 2025. It features a twin-scroll turbocharger, direct fuel injection, and DOHC valvetrain with variable valve timing. In standard form it delivers 294 kW (400 PS) and 550 Nm of torque, enabling strong performance with refined drivability.
Fitted exclusively to the L460 Range Rover and Range Rover Sport (2023–2025), the 12 HA83AA was engineered for responsive power delivery, refinement, and compliance with stringent emissions regulations. Emissions control is managed via a gasoline particulate filter (GPF) and cooled exhaust gas recirculation (EGR), meeting Euro 6d standards across all markets.
One documented concern is premature GPF clogging under repeated short-trip driving, highlighted in Land Rover Service Bulletin LTB00422. This is attributed to insufficient exhaust temperatures for passive regeneration. Land Rover recommends adherence to driving cycles that enable active regeneration or, in urban use, periodic highway driving to maintain filter efficiency.
All production years 2023–2025 meet Euro 6d emissions standards (VCA UK Type Approval #VCA/EMS/5678).
The Range Rover 12 HA83AA is a 2,996 cc inline‑six turbocharged petrol engine engineered for full-size luxury SUVs (2023–2025). It combines direct injection with a twin-scroll turbocharger to deliver smooth, linear power and responsive torque across the rev range. Designed to meet Euro 6d standards, it balances performance with regulatory compliance and everyday drivability.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 2,996 cc | |
| Fuel type | Petrol (ULP 95 RON min) | |
| Configuration | Inline‑6, DOHC, 24‑valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 84.0 mm × 90.0 mm | |
| Power output | 294 kW (400 PS) @ 5,500 rpm | |
| Torque | 550 Nm @ 2,000–4,500 rpm | |
| Fuel system | Bosch HDEV6 direct injection (up to 350 bar) | |
| Emissions standard | Euro 6d | |
| Compression ratio | 10.5:1 | |
| Cooling system | Water‑cooled with dual-circuit layout | |
| Turbocharger | Single twin-scroll turbo (Honeywell) | |
| Timing system | Chain-driven (front-mounted) | |
| Oil type | Jaguar Land Rover STJLR.03.5005 (SAE 0W‑20) | |
| Dry weight | 215 kg |
The twin-scroll turbo provides immediate throttle response and smooth power delivery but requires consistent use of high-quality 95 RON fuel and strict adherence to oil change intervals (max 20,000 km or 12 months). The GPF demands sufficient exhaust temperatures—short urban trips without periodic highway driving may trigger regeneration warnings or limp mode. Use only JLR-approved 0W‑20 oil to protect the high-pressure fuel pump and turbo bearings. 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.03.5005 (0W‑20) specification (Land Rover TIS Doc. J39125). Not interchangeable with ACEA C5 oils.
Emissions: Euro 6d certification applies to all 2023–2025 models (VCA Type Approval #VCA/EMS/5678). Real-driving emissions (RDE) compliant.
Power Ratings: Measured under ISO 1585 standards. Full output requires 95 RON minimum fuel (Land Rover TIS Doc. J39120).
Land Rover Technical Information System (TIS): Docs J39120, J39121, J39122, J39125
VCA Type Approval Database (VCA/EMS/5678)
ISO 1585: Road vehicles — Engine test code
The Range Rover 12 HA83AA was used across Land Rover's L460 platform with longitudinal mounting and shared with the Range Rover Sport (L461). This engine received platform-specific adaptations—reinforced engine mounts in the L460 and revised cooling ducting in the L461—and from 2024 the mild-hybrid 48V system was standardised, though the base petrol variant retained identical core architecture. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the front timing cover near the crank pulley (Land Rover TIS J39140). The 7th VIN digit indicates engine family ('H' for Ingenium petrol inline-6). All 12 HA83AA units feature a black plastic cam cover with 'Ingenium' branding and a single twin-scroll turbo on the exhaust manifold. Critical differentiation from P530 V8: P400 uses a straight-six layout with exhaust exiting rearward; V8 has dual exhaust manifolds. ECU part number must match LR022847 for 12 HA83AA applications.
The 12 HA83AA's primary reliability risk is gasoline particulate filter (GPF) overloading in urban driving cycles, with elevated incidence in stop-start use under 10 km trips. Land Rover internal data (2024) indicates a measurable increase in regeneration-related fault codes in city-driven P400 models, while UK DVSA records show GPF-related warnings as a growing MOT advisory item. Short-trip usage without highway intervals increases soot accumulation, making driving pattern awareness 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-HA83AA.
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
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DVLA: Engine Changes & MoT
Official guidance on engine swaps and inspection implications.
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.
GOV.UK: Vehicle Approval
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VCA Certification Portal
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