How much does a Range Rover D300 engine replacement cost-

A reconditioned or rebuilt DT306 engine for the Range Rover D300 typically ranges from £6,500 to £11,000 for supply only, depending on the condition and specialist.

What are the signs of crankshaft bearing failure in a Range Rover D300-

Early signs include a distinct knocking noise from the bottom end on cold startup or a sudden drop in oil pressure.

Is it worth replacing the engine in a modern Range Rover D300-

Yes, given the high retained value of the L460 Range Rover D300 (typically £55,000+), a rebuilt engine is a financially sound investment.

What is the difference between a used and a rebuilt Range Rover D300 engine-

A used engine is a direct salvage unit with unknown history and limited warranty coverage.

Range Rover D300 SPECIALISTS

Range Rover D300 Engine Replacement Compare Prices & Get Quotes

Get quotes today from trusted UK Range Rover D300 engine specialists. Compare prices on reconditioned, rebuilt and used engines to secure the best supply and fit solution for your vehicle.

Supply & Fit Available

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Range Rover D300 Engine

from£7,500 to £11,00...

Usedfrom £3,500
Reconditionedfrom £6,500
Common codesDT306

Land Rover range-rover D300 Used Engine — DT306 (AJ20D6)

Land Rover range-roverUsed Engine — DT306 (AJ20D6)

Land Rover range-rover D300 Reconditioned Engine — DT306 (AJ20D6)

Land Rover range-roverReconditioned Engine — DT306 (AJ20D6)

Land Rover range-rover D300 Rebuilt Engine — DT306 (AJ20D6)

Land Rover range-roverRebuilt Engine — DT306 (AJ20D6)

Instant QuotesNo Obligation100% FreeReconditionedRebuiltUsedSupply & Fit AvailableUK-Wide NetworkInstant QuotesNo Obligation100% FreeReconditionedRebuiltUsedSupply & Fit AvailableUK-Wide NetworkInstant QuotesNo Obligation100% FreeReconditionedRebuiltUsedSupply & Fit AvailableUK-Wide NetworkInstant QuotesNo Obligation100% FreeReconditionedRebuiltUsedSupply & Fit AvailableUK-Wide Network

How it works

3 Simple Steps to Finding the Right Replacement Engine

Clear information first, then the right engine and specialist for your exact vehicle.

Variant History

Range Rover D300 Engine History & Specs at a Glance

When the D300 variant launched in the L460 generation, it brought a refined 300PS 3.0-litre inline-six mild-hybrid diesel to the flagship Range Rover lineup, replacing older nomenclature with a clear power-based badge. Its engine has remained a singular, high-output unit throughout its production run.

2022
DT306 (AJ20D6), 3.0L Inline-6 MHEV Diesel, 300 PS (Introduction of the D300 powertrain to the L460 Range Rover, featuring twin-turbocharging, 48V mild-hybrid assistance, and advanced emissions controls).

Every engine fitted to the Range Rover D300 is covered below, with UK rebuilt pricing and known failure points.

Engine Codes & Pricing

Range Rover D300 Engine Codes Specifications & Replacement Cost

Find your exact engine code, specs and UK replacement cost guide.

DT306 (AJ20D6) — 3.0L Diesel MHEV (2022-present)

Power Output: 300 PS (296 bhp)
Years Fitted: 2022-present

Can’t find your exact engine code?-> Get quotes for DT306 Range Rover D300 engine replacement

-> Get quotes for DT306 Range Rover D300 engine replacement

Common failure points and repair options

Crankshaft Bearing & Oil Pump Failure

Affected: Range Rover D300 (DT306, 2022-present)
Typical failure mileage: 80,000-140,000 miles

Root cause

The tin-aluminium coating on the crankshaft bearings can fatigue under high load or poor oil maintenance, while the oil pump can suffer from premature wear, leading to catastrophic bottom-end failure.

Repair options

Repair tier	Dealer price	Specialist price
Minor/Preventative (Oil pump replacement + bearing inspection)	£2,500-£4,000	£1,500-£2,500
Full Replacement - rebuilt/reconditioned engine	£11,000-£15,000	£7,500-£11,000 [EM-QUOTE]

Our recommendation

If the issue is strictly early-stage oil pressure fluctuation, a specialist oil pump replacement and thorough inspection is the most cost-effective fix. However, if there is accompanying engine knock, loss of compression, or internal damage, a fully rebuilt unit with all known vulnerabilities addressed is the safest long-term choice for a vehicle of this caliber.

-> Compare rebuilt DT306 Range Rover D300 engine prices

Don't Let Engine Failure Write Off Your Range Rover D300

Protect your investment with a rebuilt engine that includes upgraded components, a comprehensive 12-month unlimited mileage warranty, and nationwide supply & fit delivery. Comparing specialist quotes ensures you avoid main dealer premiums while securing precision engineering for your high-performance Range Rover.

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FAQ

Range Rover D300 Engine ReplacementFrequently Asked Questions

Everything Range Rover D300 owners usually ask before choosing a rebuilt, reconditioned or used replacement engine.

A professional supply and fit service for the DT306 engine typically takes 3 to 5 days due to the complexity of the inline-six layout and ancillary systems.

This includes engine removal, thorough bay cleaning, installation of the replacement unit, and comprehensive ECU calibration.
Nationwide delivery of the replacement engine can be arranged to your chosen specialist.

-> Book a Range Rover D300 supply and fit appointment.

Why Choose Us

Compare Range Rover D300 Engine Prices Today

Comparing quotes is completely free and carries no obligation. By entering your registration, you ensure that every quote you receive is precisely matched to your Range Rover D300 and its specific DT306 engine code, connecting you directly with vetted UK specialists who understand high-performance modern Range Rover replacements.

50+50+ Range Rover D300 engines supplied through our network

12-Month12-Month Warranty on every rebuilt Range Rover D300 engine

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