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 varian…
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 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.
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.
The most common questions about engine codes, what they mean, how to find them and how this database works
The P400 petrol offers strong performance and refinement when maintained properly, but pre-2020 models are prone to 48-volt BSG wear under frequent urban use. Later revisions improved BSG durability, and engines with regular servicing and mixed driving can exceed 150,000 km. Using correct oil, high-quality fuel, and avoiding prolonged short trips are essential for longevity.
Key issues include 48-volt BSG wear, GPF clogging, intake carbon buildup, and high-pressure fuel pump failure. These are documented in Land Rover service bulletins, particularly SIB ENG-50100. Preventative maintenance—regular long drives, proper fuel use, and timely servicing—is critical to avoid costly repairs.
The P400 petrol was used in the Range Rover (L405, 2017–2021) and Range Rover Sport (L494, 2017–2022). It was offered as the top-tier petrol option in both models, primarily in HSE and Autobiography trims. No other manufacturers used this engine.
Yes, limited tuning potential exists. ECU remaps can safely increase output to around 450 PS with supporting modifications. However, gains are constrained by the single turbo and fuel system limits. Most tuning is focused on throttle response and transmission mapping. OEM does not support aftermarket tuning.
Moderate for its class. In a Range Rover Sport P400, expect ~14.5 L/100km (city) and ~10.2 L/100km (highway), or about 19 mpg UK combined. Real-world consumption depends heavily on driving style, terrain, and climate. The MHEV system provides minor efficiency gains in stop-start traffic.
Yes. The P400 petrol is an interference engine. If the timing chain fails, the pistons can strike the valves, causing catastrophic internal damage. However, the chain is designed for the life of the engine under normal operating conditions and does not require scheduled replacement.
Land Rover specifies SAE 5W-30 mineral or synthetic oil meeting JLR STJLR.51.5122 standards. Change intervals are 16,000 km or annually. Using the correct oil ensures proper turbo, fuel pump, and chain lubrication. Avoid non-approved low-SAPS oils that may not meet thermal and wear protection requirements.
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.