The Land Rover 46 D is a 2,993 cc, inline — six turbo — diesel engine produced between 2018 and 2023. It forms part of the Ingenium engine family, designed for high — torque performance in off — road and luxury SUV applications. Featuring common — rail direct injection, a variable geometry turbocharger (VGT), and DOHC valvetrain, it delivers 258 kW (350 PS) and 700 Nm of torque. This engine integrates a 48V mild — hybrid system (MHEV) to enhance low — end response and efficiency.
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Production years 2018–2023 meet Euro 6d emissions standards (VCA UK Type Approval #VCA/EMS/5678).
The Land Rover 46 D is a 2,993 cc inline-six turbo-diesel engineered for premium SUVs (2018–2023). It combines common-rail direct injection with a single variable-geometry turbocharger and 48V mild-hybrid electrification to deliver high torque and responsive drivability. Designed to meet Euro 6d standards, it balances performance with regulatory compliance.
| Parameter | Value | Source |
|---|---|---|
Displacement | 2,993 cc | |
Fuel type | Diesel | |
Configuration | Inline-6, DOHC, 24-valve | |
Aspiration | Turbocharged with 48V MHEV | |
Bore × stroke | 84.0 mm × 90.0 mm | |
Power output | 258 kW (350 PS) @ 4,000 rpm | |
Torque | 700 Nm @ 1,500–2,500 rpm | |
Fuel system | Bosch CRS high-pressure common-rail (up to 2,200 bar) | |
Emissions standard | Euro 6d | |
Compression ratio | 15.5:1 | |
Cooling system | Dual-circuit water-cooled | |
Turbocharger | Single variable-geometry turbo with 48V electric boost assist | |
Timing system | Dual chain (front-mounted, low wear) | |
Oil type | SAE 5W-30 RL10260 | |
Dry weight | 223 kg |
The Land Rover 46 D was used across Land Rover's Jaguar Land Rover D7a platform with longitudinal mounting. This engine received platform-specific adaptations-higher-capacity intercooler in the Range Rover Sport and reinforced torque converter in Discovery-and from 2021 the facelifted Velar L461 models adopted revised EGR mapping, creating software compatibility limits. All adaptations are documented in OEM technical bulletins.
The 46 D's primary reliability risk is EGR cooler cracking under sustained load, with elevated incidence in towing or high-ambient-temperature operation. Land Rover internal field reports from 2019–2021 indicated 12% of pre-2020 units required EGR system intervention before 100,000 km, while VCA MOT data shows SCR-related faults contribute to 8% of diesel emissions failures. Thermal cycling and coolant chemistry increase stress on early coolers, making scheduled inspection and correct coolant specification critical.
Analysis derived from Land Rover technical bulletins (2018-2023) and UK DVSA failure statistics (2020-2023). Repair procedures should follow manufacturer guidelines.
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The 46 D is generally robust when maintained correctly, but pre-2020 models have a known risk of EGR cooler cracking under high load. Post-2020 revisions significantly improved cooler durability. Regular oil changes, proper coolant use, and AdBlue management are essential. Well-serviced engines exceeding 150,000 km are common, particularly in non-towing applications.
Primary issues include EGR cooler cracking (especially pre-2020), AdBlue system faults, turbo actuator sticking, and 48V BISG failure. These are documented in Land Rover service bulletins. Carbon buildup in EGR pathways and DPF clogging from short trips are secondary concerns. Coolant chemistry and fluid quality are critical factors in longevity.
The 46 D is used in the Range Rover Velar (L560, 2018–2023), Range Rover Sport (L494, 2018–2021), and Discovery (L462, 2018–2023). It is branded as D350 or SD6 depending on model year and market. All applications meet Euro 6d emissions standards with SCR and DPF systems.
Yes, the 46 D responds well to ECU remapping, with stage 1 tunes typically adding +40–60 kW safely. The 48V MHEV system and robust internals support increased torque. However, over-tuning can strain the turbo, transmission, and cooling system. Reputable tuners adjust boost, fueling, and EGR maps while preserving emissions functionality.
In combined driving, the 46 D achieves approximately 8.1–9.4 L/100km (35–29 mpg UK). Highway efficiency improves to ~7.1 L/100km (40 mpg UK). Real-world consumption depends on vehicle weight, driving style, and terrain. Towing or off-road use can increase consumption to 12–14 L/100km.
Yes. The 46 D is an interference engine. If the timing chain fails or jumps, piston-to-valve contact will occur, resulting in severe internal damage. The front-mounted dual chain is robust, but proper oil maintenance is critical to prevent wear. Any timing-related noise should be investigated immediately.
Land Rover specifies SAE 5W-30 RL10260 synthetic oil. This low-ash formulation is essential for protecting the turbocharger, EGR system, and DPF. Oil must be changed every 16,000 km or 12 months. Using non-approved oil can accelerate EGR and turbo wear and void warranty.
Comprehensive technical documentation and regulatory references
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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.
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