The Land Rover P400 is a 2,995 cc, inline-six turbocharged petrol engine produced between 2017 and 2023. Developed as part of Jaguar Land Rover's Ingenium engine family, it features direct fuel injection, twin-scroll turbocharging, and an integrated 48-volt mild-hybrid system (MHEV). In standard tune it delivers 294 kW (400 PS), with peak torque of 550 Nm available from 1,500 rpm, enabling strong acceleration and towing capability.
Fitted to high-performance variants of the Range Rover Sport and Range Rover, the P400 was engineered for dynamic on-road performance while retaining off-road capability. Emissions compliance is achieved through a close-coupled three-way catalyst, gasoline particulate filter (GPF), and intelligent stop-start enabled by the 48-volt system, allowing Euro 6d-Temp compliance across all markets.
One documented concern is premature wear in the 48-volt belt-driven starter-generator (BSG), particularly under frequent stop-start operation. This issue, highlighted in Land Rover Technical Service Bulletin STC 50100, can lead to system shutdown and loss of regenerative braking. From 2020, revised BSG mounting and control logic were introduced to improve durability.
All production years (2017–2023) meet Euro 6d-Temp emissions standards (VCA UK Type Approval #VCA/EMS/9876).
The Land Rover P400 Petrol is a 2,995 cc inline-six turbocharged petrol engine engineered for luxury SUV applications (2017–2023). It combines direct fuel injection with twin-scroll turbocharging and a 48-volt mild-hybrid system (MHEV) to deliver high power and responsive torque. Designed to meet Euro 6d-Temp standards, it balances performance with emissions control.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 2,995 cc | |
| Fuel type | Petrol (Unleaded, 95 RON min) | |
| Configuration | Inline-6, DOHC, 24-valve | |
| Aspiration | Turbocharged with twin-scroll turbo | |
| Bore × stroke | 84.5 mm × 89.0 mm | |
| Power output | 294 kW (400 PS) @ 5,500–6,500 rpm | |
| Torque | 550 Nm @ 1,500–5,000 rpm | |
| Fuel system | Bosch HDEV6 direct injection (up to 350 bar) | |
| Emissions standard | Euro 6d-Temp | |
| Compression ratio | 10.5:1 | |
| Cooling system | Water-cooled, dual-circuit with electric pump | |
| Turbocharger | Single twin-scroll turbo with electronic wastegate | |
| Timing system | Chain-driven (interval: lifetime under normal use) | |
| Oil type | SAE 5W-30, API SN/SP, JLR STJLR.51.5122 | |
| Dry weight | 198 kg |
The twin-scroll turbo and MHEV system deliver strong low-end torque and seamless power delivery, ideal for towing and highway merging. The 48-volt BSG requires regular vehicle use to maintain battery health; prolonged inactivity can trigger system faults. SAE 5W-30 oil meeting JLR STJLR.51.5122 is essential for turbo and high-pressure fuel pump longevity. The GPF requires periodic active regeneration—short trips may lead to clogging and reduced performance. Post-2020 models feature updated BSG firmware and mounting to reduce vibration-related wear. Use of 95 RON minimum fuel is critical to prevent knock and maintain power output.
Oil Specs: Requires JLR STJLR.51.5122-compliant 5W-30 (Land Rover SIB ENG-50100). Not compatible with non-JLR-approved low-SAPS oils.
Emissions: All models (2017–2023) meet Euro 6d-Temp standards (VCA Type Approval #VCA/EMS/9876). GPF-equipped from launch to meet particulate number limits.
Power Ratings: Measured under ISO 1585 standards. Output assumes clean air filter, correct ignition timing, and optimal fuel quality (Land Rover TDS ING30P-ENG-004).
Land Rover Technical Data System (TDS): Docs ING30P-ENG-001, ING30P-TIMING-001, SIB ENG-50100
VCA Type Approval Database (VCA/EMS/9876)
ISO 1585 Road vehicles — Test method for the measurement of fuel consumption
The Land Rover P400 Petrol was used across Land Rover's Range Rover and Range Rover Sport platforms with longitudinal mounting and no licensed external applications. This engine received platform-specific adaptations-cooling upgrades in Range Rover Sport for track use and revised air intake routing in Range Rover for quietness-and from 2020 the Range Rover Sport L494 facelift adopted enhanced thermal shielding, creating interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine identification number stamped on the left-hand side of the cylinder block, just below the intake manifold (Land Rover TDS ING30P-ID-002). The 8th VIN digit indicates engine type ('P' for P400 petrol). Pre-2020 models have a silver MHEV housing; post-2020 units use a revised black casing with updated mounting brackets. Critical differentiation from diesel variants: P400 petrol has a 48-volt BSG and direct injection; diesel versions use a different turbo layout and no BSG. Service parts require model-year verification—MHEV components for pre-2020 engines are not interchangeable with post-2020 revisions due to control module updates (Land Rover SIB ENG-50100).
The P400 petrol's primary reliability risk is 48-volt BSG wear in urban-driven vehicles, with elevated incidence in stop-start traffic. Internal Land Rover field reports from 2021 indicated a notable share of pre-2020 units required BSG replacement before 100,000 km, while UK DVSA data links a significant portion of emissions failures to GPF clogging in short-trip applications. Infrequent long drives and deferred servicing amplify thermal and particulate stress, making usage patterns and maintenance critical.
Analysis derived from Land Rover technical bulletins (2017-2023) and UK DVSA failure statistics (2018-2024). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about LAND-ROVER P400.
Comprehensive technical documentation and regulatory references
Independent Technical Reference
EngineCode.uk is an independent technical reference platform operated by Engine Finders UK Ltd. We are not affiliated with LAND-ROVER or any other manufacturer. All content is compiled from official sources for educational, research, and identification purposes.
Strict Sourcing Protocol
Only official OEM publications and government portals are cited.
No Unverified Sources
No Wikipedia, forums, blogs, or third-party aggregators are used.
Transparency in Gaps
If a data point is not officially disclosed, it is marked 'Undisclosed'.
Regulatory Stability
EU regulations are referenced using CELEX identifiers for long-term stability.
LAND-ROVER Official Site
Owner literature, service manuals, technical releases, and plant documentation.
EUR-Lex
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.
Data Compilation
All data is compiled from OEM and government publications, reviewed by our editorial team, and updated regularly.
Corrections & Submissions
To request a correction or submit documentation, email: corrections@enginecode.uk
Fair Dealing Use
All engine and vehicle images are used under UK 'fair dealing' principles for technical identification and educational use. Rights remain with their respective owners.
Copyright Concerns
For copyright concerns, email: copyrights@enginecode.uk
GDPR Compliance
EngineCode.uk complies with UK GDPR. We do not collect personal data unless explicitly provided.
Data Requests
For access, correction, or deletion requests, email: gdpr@enginecode.uk
Trademark Notice
All trademarks, logos, and engine codes are the property of their respective owners. Use on this site is strictly for reference and identification.
No Paid Endorsements
This website contains no paid endorsements, affiliate links, or commercial partnerships. We do not sell parts or services.
Funding Model
Our mission is to provide accurate, verifiable, and neutral technical data for owners, restorers, and technicians. This site is self-funded.
All specifications and compatibility data verified against officialLAND-ROVER documentation and EU/UK regulatory texts. Where official data is unavailable, entries are marked “Undisclosed“ .
All external links open in new tabs. Please verify current availability of resources.
