Land Rover 30Ddtx Engine Replacement - Rebuilt & Reconditioned Units from £4,995

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Land Rover 3.0L I6 Twin-Turbo Diesel (30DDTX) Engine

Mild Hybrid Performance, Refined Power Delivery

The Land Rover 30DDTX 3.0L inline-six diesel engine is a premium powertrain developed under Jaguar Land Rover’s Ingenium family and introduced in 2020 as part of a shift towards smoother and more efficient six-cylinder architectures. Built to replace the aging 3.0L V6 SDV6 engine, the 30DDTX integrates the latest in diesel and hybrid technology, offering cleaner emissions and superior refinement. It represents JLR’s entry into the world of 48V Mild Hybrid Electric Vehicles (MHEV), reducing turbo lag and improving low-end response using an electric supercharger alongside twin turbochargers.


This engine features an aluminium block and inline-six layout, optimising weight distribution and thermal efficiency. With sequential twin-turbocharging and a mild hybrid system, the 30DDTX delivers impressive power (up to 350PS) while still meeting Euro 6d emissions regulations thanks to advanced aftertreatment systems including Diesel Particulate Filter (DPF), Exhaust Gas Recirculation (EGR), and Selective Catalytic Reduction (SCR). It's engineered to balance torque-rich performance with long-term reliability and better fuel economy in real-world driving conditions.


In the UK, the 30DDTX has become a popular replacement engine for premium Land Rover models, particularly those that require both towing power and highway refinement. Its MHEV functionality and robust engineering make it a solid choice for reconditioning and remanufacturing purposes.


This engine powers a wide range of flagship vehicles, including the Land Rover Defender D300 engine, Discovery D300 engine, Range Rover D300, and the Range Rover Sport D350 engine. These models benefit from the refined, high-output characteristics of the 30DDTX unit, delivering a smooth and powerful driving experience across all terrains.

Technical Specifications & Configuration

Engine Code
30DDTX
Engine Size
2997cc / 3.0 Litres
Cylinder Configuration
Inline 6 cylinder (I6)
Aspiration
Twin Turbocharged with Electric Supercharger (MHEV)
Fuel Type
Diesel (Mild Hybrid)
Injection System
Common Rail Direct Injection
Valvetrain
DOHC - 24 valves with Variable Valve Timing (VVT)
Compression Ratio
15.5:1
Cooling System
Water cooled with electric auxiliary pump
Block Material
Aluminium Alloy
Head Material
Aluminium Alloy
Emission Standard
Euro 6d (DPF, EGR, SCR AdBlue)
Power Output Range
300 - 350 PS (varies by model & year)
Torque Output
650 - 700 Nm
Turbo Configuration
Sequential Twin Turbo + Electric Supercharger
Fuel Economy (Est.)
35-45 MPG (combined, vehicle-dependent)

Common Configurations

  • Range Rover Sport: D300 AWD with ZF 8-Speed Automatic (300 PS)
  • Land Rover Defender 110: D300 mild hybrid, 48V MHEV setup
  • Range Rover Velar: 3.0L I6 Diesel, 8-Speed Auto with Terrain Response
  • Land Rover Discovery: D300 variant with Intelligent Driveline Dynamics
  • All-Wheel Drive Only: No RWD or FWD configurations available

Noteworthy Engineering Highlights

  • 🧊Integrated water-cooled VGT turbo: enhances thermal efficiency
  • ⚙️Inline-6 layout: naturally balanced for refined operation
  • 🧪Aluminium block architecture: reduces engine weight
  • 🌡️48V Mild Hybrid Integration: improves fuel economy and response
  • 🛡️AdBlue SCR system: meets strict Euro 6d emissions

30DDTX, D300, MHEV I6

Also known as the D300, 3.0D MHEV, or I6 Ingenium Diesel. Commonly listed under 30DDTX in OEM data, it's often referred to by owners as the "Mild Hybrid 3.0D" or simply "Inline-6 Diesel" on forums and listings.

Types of Land Rover 3.0L I6 30DDTX Replacement Engines Available

Land Rover 3.0L I6 30DDTX Rebuilt Engines

High-performance rebuilds with OEM-grade pistons, gaskets & timing chains.

Land Rover 3.0L I6 30DDTX Remanufactured Engines

Every unit fully stripped and rebuilt to match factory tolerances.

Land Rover 3.0L I6 30DDTX Reconditioned Engines

Carefully inspected, cleaned, and restored by seasoned diesel specialists.

Land Rover 3.0L I6 30DDTX Replacement Engines

Direct-fit diesel engines ideal for quick swaps and no-hassle installations.

Land Rover 3.0L I6 30DDTX Refurbished Engines

Budget-friendly, tested units with clean internals and compression-verified heads.

Land Rover 3.0L I6 30DDTX Used Engines

Hand-selected from breakers and verified by our expert mechanics.

Compatible Models with 30DDTX Engine

Land Rover Compatible Models

Land Rover Defender D300 inline‑6 diesel engine fitment

Land Rover Defender Engines
Range Rover Sport D300 mild hybrid diesel engine compatible

Range Rover Sport Engines
Range Rover D300 inline‑6 diesel compatible engine

Range Rover Engines

Jaguar Compatible Models

Jaguar F‑PACE D300 inline‑6 diesel MHEV engine compatibility

Jaguar F‑PACE Engines

30DDTX Engine Applications


Land Rover Applications

Land Rover Logo
DEFENDER 110 300HP
2020-Present
D300 inline‑6 MHEV, AWD ZF‑8HP70
RANGE ROVER SPORT 300HP
2020-Present
D300 mild hybrid diesel with Terrain Response AWD
RANGE ROVER 300-350HP
2020-Present
D300 / D350 inline‑6 Diesel MHEV variants

Jaguar Applications

Jaguar Logo
JAGUAR F‑PACE 300HP
2020-Present
D300 inline‑6 diesel MHEV in SUV lineup

⚠️ Note: If you're unsure whether your vehicle has the 30DDTX (D300) engine, simply enter your registration number above or contact our support team for a free compatibility check.

Common 30DDTX Engine Problems & Solutions


Pricing, Warranty & Availability

Most Popular

Rebuilt Land Rover 3.0L I6 30DDTX Engine

From
£4,995
(Supply Only)
  • ✔ Fully Disassembled & Rebuilt
  • ✔ OEM-Grade Replaced Parts
  • ✔ Like-New Condition
  • ✔ 12-24 Month Warranty

Reconditioned Land Rover 3.0L I6 30DDTX Engine

From
£4,200
(Supply Only)
  • ✔ Professionally Reconditioned
  • ✔ Thoroughly Inspected & Tested
  • ✔ Restored to OEM Standard
  • ✔ 12 Month Warranty
Cheapest Option

Used Land Rover 3.0L I6 30DDTX Engine

From
£2,500
(Supply Only)
  • ✔ Basic Inspection
  • ✔ Compression Tested
  • ✔ Known Service History
  • ✔ 30 Days to 3 Month Warranty

Refurbished Land Rover 3.0L I6 30DDTX Engine

From
£3,700
(Supply Only)
  • ✔ Partial Overhaul
  • ✔ Key Component Replacement
  • ✔ Cost-effective Option
  • ✔ 3 to 6 Month Warranty

📦 Stock Availability & Delivery Time

  • 🔄 High availability across UK suppliers
  • 🚚 Next-day delivery on in-stock units (supply only)
  • 🛠️ 7-10 day turnaround for rebuilt units
  • 📦 Free UK mainland delivery (select suppliers)

⭐ What You Get With Every Land Rover 3.0L I6 30DDTX Engine

  • 🧰 OEM-quality rebuilds using JLR-approved parts
  • 🔎 Full inspection reports w/ compression & leak-down tests
  • 📋 Engine serial & block codes verified
  • 💬 UK-based support before & after sale
  • 🔄 Exchange options for faulty units
  • 🧾 Simple returns & warranty claims

Land Rover 3.0L I6 30DDTX Engine Reconditioning Process


STEP 1 1 Day

Initial Inspection & Diagnostic Reporting

  • Visual & Dimensional Checks: Deck flatness, bore wear, and head warpage.
  • Oil & Coolant Analysis: Detect fuel dilution, glycol traces, or contamination.
  • Compression Testing: Verify ring and valve sealing before teardown.
STEP 2 1-2 Days

Complete Strip Down & Component Cleaning

  • Media Blast Cleaning: Remove carbon & sludge from internals.
  • Chemical Degreasing: Clean oil pump, HPFP, and turbo cores.
  • Part Identification: Catalog rods, pistons, and cams for traceability.
STEP 3 2-3 Days

Non-Destructive Testing & Machining

  • Crack Testing: Magnaflux and dye penetrant for structural faults.
  • Boring & Honing: Re-bore cylinders and hone for correct finish.
  • Crank Grinding: Undersize grind and dynamic balance.
  • Surface Milling: Flatness to <0.03mm deviation.
STEP 4 1 Day

Component Replacement with OEM Parts

  • Pistons & Rings: Forged internals matched to rebored block.
  • Timing Kit: New chain, guides, tensioner, sprockets.
  • Seals & Gaskets: All major gaskets and seals replaced.
  • Water & Oil Pump: New OEM pumps with updated specs.
STEP 5 1 Day

Assembly & Torque Angle Verification

  • Sequential Torque: Head & main bolts torqued to spec.
  • Phaser Setup: Cam phasers installed and OCVs verified.
  • Injector Setup: Calibrated with precision flow test bench.
STEP 6 1 Day

Hot Bench Dyno & Road Simulation

  • Cold Start Test: Oil pressure and tensioner function verified.
  • Load Simulation: Urban/motorway load profiles checked for leaks and stability.
  • Compression & Emissions: Ring seal and smoke tested before dispatch.
Land Rover replacement engine - Engine Finders

Why Choose Engine Finders for Land Rover 3.0L I6 30DDTX Diesel Engine?

At Engine Finders, we don’t just sell engines - we deliver peace of mind. Here’s why Land Rover & Jaguar owners across the UK trust us:

  • ✔ Trusted UK Suppliers

    We work exclusively with vetted UK suppliers who specialize in Land Rover engines - no middlemen, no guesswork.

  • ✔ Save Up to 60% vs Dealership

    Why overpay? Compare quotes from multiple sellers & save up to 60% on Land Rover replacement engines, get top-tier quality for less.

  • ✔ Tested & Certified Engines

    Every Land Rover engine is thoroughly tested for durability and performance, backed by a 6-24 month warranty.

  • ✔ Fast Quotes & Faster Delivery

    Quick quotes, nationwide delivery, and optional vehicle recovery, get your Land Rover back on the road in no time.

  • ✔ Expert Land Rover Defender Support

    Need help? Our friendly Land Rover specialists guide you through engine compatibility, specs, and installation process.

  • ✔ 30DDTX Engines Specialists

    From Range Rover Evoque to Jaguar XE, we offer all variants (300PS / 340PS / 400PS).

  • ✔ Performance Matched with Experience

    Our remanufactured and reconditioned engines often meet or exceed OEM specs - ready for serious off-road and on-road action.

  • ✔ We Work for You - Not the Suppliers

    We’re 100% on your side, helping you choose the best engine deal instead of just pushing supplier specials.

Tuning & Performance Upgrades


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Frequently Asked Questions - 30DDTX Ingenium Diesel Engine

How much does a rebuilt Land Rover 30DDTX cost in the UK?

A fully reconditioned Land Rover 30DDTX typically costs between £3,000‑£4,500 in the UK, including core exchange and a 12‑month unlimited mileage warranty. Prices vary based on mileage, injector condition, and whether the MHEV starter/generator is serviced. Installation and turbo refurbishment may incur additional labour.

What is the lifespan of a Land Rover 30DDTX diesel unit?

With regular oil changes (every 10,000 mi/12 months) and quality fuel, the Land Rover 30DDTX can surpass 150,000-200,000 miles. Key wear parts like the timing chain and high‑pressure fuel pump seals should be inspected around 80,000-100,000 mi to prevent failure.

Can the DPF in a Land Rover 30DDTX be cleaned, or must it be replaced?

Most DPF units on Land Rover 30DDTX models can be cleaned through forced regeneration or chemical soak treatments. Replacement is only essential if back‑pressure stays above ~1.5 bar, or if the ceramic substrate is cracked. Avoid short UK urban trips to prevent premature clogging.

What oil grade is recommended for the Land Rover 30DDTX?

Use 0W‑30 low‑ash diesel oil approved to JLR standards (ACEA C3), changing every 10,000 mi or 12 months. Avoid bottom‑shelf oils and replace filters at each service to reduce sludge and EGR clogging risks.

Is a Land Rover 30DDTX swap possible across different Land Rover platforms?

Yes, Land Rover 30DDTX swaps onto compatible platforms like Defender L663, Range Rover Sport L494, and Velar L560 are common. It requires ECU remap to recognise 48 V MHEV, wiring modifications, and alignment with the ZF‑8HP gearbox. Use certified tuners to maintain full functionality and emissions compliance.

Does remapping the Land Rover 30DDTX void the warranty?

A Stage 1 ECU remap retains the standard 12‑month unlimited mileage warranty if performed by approved technicians and using verified calibration maps. Warranty may be voided if hardware modifications (e.g. turbo upgrades) are fitted without declaration or original equipment certification.

What are common maintenance concerns for the Land Rover 30DDTX?

Frequent issues include timing‑chain tensioner wear, EGR carbon build‑up, HPFP seal leaks, and coolant pump impeller degradation. Proactive service every 10k mi, periodic EGR cleaning, and using high‑quality diesel fuel helps avoid costly repairs.

What emissions systems does the Land Rover 30DDTX use?

Land Rover 30DDTX features Euro 6d compliance via DPF, EGR, SCR (AdBlue) and advanced noise reduction. Software calibrations ensure regeneration cycles complete reliably; avoid frequent short trips to maintain system health and MOT compliance.