The Land Rover 306D1 is a 2,993 cc, inline-six turbo-diesel engine produced between 2004 and 2016. It is part of the Ford/PSA joint-venture TDDi engine family, later refined under Land Rover's stewardship for use in full-size SUVs. Featuring common-rail direct injection, a variable geometry turbocharger (VGT), and dual overhead camshafts (DOHC), it delivers 128–150 kW (174–204 PS) and 440–470 Nm of torque, providing strong low-end pulling power for off-road and towing applications.
Fitted to the Range Rover (L322) and Discovery 3/4 (L319), the 306D1 was engineered for high-torque performance in heavy chassis applications. Emissions compliance was achieved through exhaust gas recirculation (EGR), a diesel particulate filter (DPF), and optimized combustion tuning, allowing Euro 4 and later Euro 5 compliance across its production run. The engine's longitudinal mounting and robust design made it suitable for permanent four-wheel drive systems.
One documented concern is high-pressure fuel pump (HPFP) failure, particularly in early builds (2004–2008), linked to fuel quality sensitivity and inadequate lubrication. This issue, referenced in Land Rover Technical Service Bulletin TSB 055/09, was addressed through revised pump internals and updated fuel calibration. From 2010, a redesigned HPFP with improved plunger coatings and enhanced sealing was introduced to improve durability.
Production years 2004–2009 meet Euro 4 standards; 2010–2016 models meet Euro 5 standards (VCA UK Type Approval #VCA/EMS/3456).
The Land Rover 306D1 is a 2,993 cc inline-six turbo-diesel engineered for full-size luxury and utility SUVs (2004–2016). It combines common-rail direct injection with a variable geometry turbocharger to deliver strong low-end torque and improved fuel economy. Designed to meet Euro 4 and Euro 5 emissions standards, it integrates EGR and DPF technologies while maintaining off-road capability and towing performance.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 2,993 cc | |
| Fuel type | Diesel | |
| Configuration | Inline-6, DOHC, 24-valve | |
| Aspiration | Turbocharged (VGT) | |
| Bore × stroke | 85.0 mm × 88.0 mm | |
| Power output | 128–150 kW (174–204 PS) | |
| Torque | 440–470 Nm @ 1,500–2,500 rpm | |
| Fuel system | Bosch CP3 high-pressure common-rail (up to 1,600 bar) | |
| Emissions standard | Euro 4 (pre-2010); Euro 5 (2010–2016) | |
| Compression ratio | 17.0:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | Single variable-geometry turbo (Garrett) | |
| Timing system | Chain (front-mounted, duplex roller) | |
| Oil type | Shell SPIRAX S6 ATF DX or LR007210 (SAE 5W-30) | |
| Dry weight | 220 kg |
The 306D1 provides strong low-RPM torque ideal for towing and off-road use but requires strict adherence to 15,000 km oil change intervals using approved 5W-30 LR007210 oil to prevent HPFP and turbo wear. The Bosch CP3 fuel pump is sensitive to fuel quality; ultra-low-sulfur diesel (EN 590) is mandatory to avoid premature failure. DPF regeneration cycles must complete fully to prevent clogging, especially on short journeys. Post-2010 models feature revised HPFP components; pre-2010 units should be monitored for fuel pressure faults. EGR cooler integrity should be verified during service to avoid coolant contamination.
Oil Specs: Requires Shell SPIRAX S6 ATF DX or LR007210 (5W-30) specification (Land Rover SIB 055/09). Supersedes ACEA B4.
Emissions: Euro 4 certification applies to pre-2010 models only (VCA Type Approval #VCA/EMS/3456). Euro 5 applies to 2010–2016 models.
Power Ratings: Measured under SAE J1349 standards. 150 kW output requires EU4+ fuel quality (Land Rover TDS Doc. L322-ENG-006).
Land Rover Technical Data System (TDS): Docs L322-ENG-001 to -006, SIB 055/09
VCA Type Approval Database (VCA/EMS/3456)
SAE International: J1349 Engine Power Certification Standards
The Land Rover 306D1 was used across Land Rover's L322/L319 platforms with longitudinal mounting and shared with Volvo for heavy-duty applications. This engine received platform-specific adaptations-reinforced mounts in the Discovery and revised torque delivery in the Range Rover-and from 2010 the facelifted Discovery 4 adopted the 306D1 with updated emissions calibration, creating interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped vertically on the left-side engine block near the exhaust manifold (Land Rover TDS L322-ENG-005). The 8th VIN digit indicates engine variant ('6' for 3.0L TDV6). Pre-2010 models have silver valve covers; post-2010 units use black. Critical differentiation from 306D2: 306D1 uses Bosch CP3 fuel pump with round diagnostic connector, while 306D2 uses CP4 with square port. Service parts require build date verification - HPFP kits for pre-2010 engines are incompatible with later revisions (Land Rover SIB 055/09).
The 306D1's primary reliability risk is high-pressure fuel pump (HPFP) failure on early builds, with elevated incidence in mixed urban/highway use. Internal Land Rover quality reports from 2011 noted a significant share of pre-2010 engines requiring HPFP replacement before 120,000 km, while UK DVSA records show increased DPF-related faults in stop-start traffic. Short journeys and low-quality fuel increase pump and DPF stress, making fuel quality and service adherence critical.
Analysis derived from Land Rover technical bulletins (2004-2016) and UK DVSA failure statistics (2010-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about LAND-ROVER 306D1.
Comprehensive technical documentation and regulatory references
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LAND-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
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
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