Range Rover D300 Engine ReplacementCompare 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
12-Month Warranty
Nationwide Delivery
100+ Suppliers
From £7,500 to £11,000 [EM-QUOTE]
Used from £3,500 · Reconditioned from £6,500 · Common codes: DT306
From £3,500
Tested, bare/short engine
From £6,500
Rod bearings addressed, tested
From quote
Upgraded bearings, full teardown, revised valvetrain
Secure enquiry - no spam, no pressure. Genuine quotes only from vetted UK Range Rover D300 specialists.
3 Simple Steps3 Simple Stepsto Finding the Best Range Rover D300 Replacement Engineto Finding the Best Range Rover D300 Replacement Engine
Most replacements completed within 3-5 days.
Variant HistoryRange 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.
Variant HistoryRange 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.
Range Rover D300
Fuel TypeDiesel (MHEV)
Engine Size Range3.0L
Power Output Range300 PS (296 bhp / 221 kW)Engine History Timeline
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).
Key Specs Snapshot
Fuel TypeDiesel (MHEV)Engine Size Range3.0LPower Output Range300 PS (296 bhp / 221 kW)Years Produced2022-presentEvery engine fitted to the Range Rover D300 is covered below, with UK rebuilt pricing and known failure points.
Range Rover D300 Engine Codes - Specifications & Replacement CostRange Rover D300 Engine Codes - Specifications & Replacement Cost
3.0L Diesel MHEV (2022-present)
Power Output300 PS (296 bhp)Years Fitted2022-present
Compatible Trim Levels
- Range Rover D300 S
- Range Rover D300 SE
- Range Rover D300 HSE
- Range Rover D300 Autobiography
Find your exact engine code, specs and UK replacement cost guide.
Used
Tested, ready-to-fit engine
£3,500-£5,500 [EM-QUOTE]
Reconditioned
Addressed known issues, tested
£6,500-£9,500 [EM-QUOTE]
Rebuilt
Full teardown, upgraded internals
£7,500-£11,000 [EM-QUOTE]
Common Failure
Crankshaft bearing failure (tin-aluminium coating fatigue), oil pump issues, and turbo contamination are the most documented issues for this 3.0L architecture.
The Range Rover D300 is a flagship diesel powertrain designed for refined, high-torque performance. However, its 3.0L Ingenium architecture is susceptible to specific bottom-end and lubrication issues. Rebuilt engines through EnginesMarket include upgraded components addressing these original failure points, plus a minimum 12-month unlimited-mileage warranty.
Why the Range Rover D300 DT306 Suffers Premature Wear
Affected Vehicles
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.
Why It Happens
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.
Dealer (parts + labour)
£2,500-£4,000
Specialist (parts + labour)
£1,500-£2,500
What it involves
Dropping the sump, replacing the oil pump, and inspecting bearing clearances.
Suitability
Effective only if caught at the very first sign of cold-start knock or low oil pressure.
1 - 2 daysDealer (parts + labour)
£11,000-£15,000
Specialist (parts + labour)
£7,500-£11,000 [EM-QUOTE]
What it involves
Supply & fit, upgraded components addressing the original failure point, 12-month warranty.
Suitability
The right call if the engine has suffered catastrophic bearing failure or block damage.
1 - 2 days
All prices are indicative UK market ranges based on current UK specialist supplier data.| Repair Tier | Dealer (Parts + Labour) | Specialist (Parts + Labour) | What It Involves | Suitability | Estimated Time |
|---|---|---|---|---|---|
 Minor/Preventative (Oil pump replacement + bearing inspection) Minor | £2,500-£4,000 | £1,500-£2,500 | Dropping the sump, replacing the oil pump, and inspecting bearing clearances. | Effective only if caught at the very first sign of cold-start knock or low oil pressure. | 1 - 2 days |
 Full Replacement - rebuilt/reconditioned engine Best Value | £11,000-£15,000 | £7,500-£11,000 [EM-QUOTE] | Supply & fit, upgraded components addressing the original failure point, 12-month warranty. | The right call if the engine has suffered catastrophic bearing failure or block damage. | 1 - 2 days |
Vehicle Value Check
Vehicle Value Check
A typical Range Rover D300 (L460) is worth £55,000-£120,000+ `[THIRD-PARTY]`. At this value, a rebuilt engine replacement cost is a small fraction of the vehicle's overall value, making replacement highly viable to preserve the asset.
Our Recommendation
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.
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.
Compare rebuilt DT306 Range Rover D300 engine prices
12-Month Minimum
UK Specialists Vetted
Best Price GuidanceImportant Information
Important Information
"All prices are indicative UK market ranges based on historical quote data and repair requests from our network of engine specialists. Dealer pricing is estimated based on published main dealer labour rates and genuine OEM parts pricing. Specialist pricing reflects actual quote data from EnginesMarket's UK network. Actual costs vary depending on damage severity, vehicle condition, variant, and workshop location within the UK. Use our free comparison tool to get tailored quotes for your specific Range Rover D300. Every engine supplied through EnginesMarket carries a minimum 12-month unlimited mileage warranty - always confirm exact terms with your chosen supplier."
Range Rover D300 Engine ReplacementFrequently Asked Questions
Question 1How 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.
- Rebuilt units include upgraded components and a warranty.
- Supply and fit labour will add approximately £975-£1,300 depending on the workshop.
Question 2What 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.
- You may also notice a loss of power, rough idling, or illuminated engine management lights.
- Ignoring these signs can lead to catastrophic internal engine damage.
Question 3Is 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.
- A rebuilt unit restores factory performance and includes a 12-month warranty.
- It is significantly more cost-effective than purchasing a new vehicle.
Question 4How long does a Range Rover D300 engine replacement take-
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.
Question 5What 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.
- A rebuilt engine is fully stripped, cleaned, and fitted with new or upgraded components (such as updated bearing shells and oil pumps).
- Rebuilt engines come with a minimum 12-month unlimited mileage warranty, offering superior peace of mind.
Why Choose UsCompare Range Rover D300Engine PricesToday
50+ Range Rover D300 engines supplied through our network
12-Month Warranty on every rebuilt Range Rover D300 engine
Nationwide UK delivery
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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.
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