Land Rover Discovery 300Tdi Engine ReplacementCompare Prices & Get Quotes
Get quotes today from trusted UK Land Rover Discovery 300Tdi engine specialists. Compare prices on reconditioned, rebuilt and used engines to find the most reliable and cost-effective solution for your classic Series I Discovery.
Supply & Fit Available
12-Month Warranty
Nationwide Delivery
100+ Suppliers
From £2,500 to £4,500 [ESTIMATED - using classic Land Rover 2.5 TDI family averages]
Used from £800 · Reconditioned from £1,800 · Common codes: 300Tdi
From £800
Tested, bare/short engine
From £1,800
Rod bearings addressed, tested
From quote
Upgraded bearings, full teardown, revised valvetrain
Secure enquiry - no spam, no pressure. Genuine quotes only from vetted UK Land Rover Discovery 300Tdi specialists.
3 Simple Steps3 Simple Stepsto Finding the Best Land Rover Discovery 300Tdi Replacement Engineto Finding the Best Land Rover Discovery 300Tdi Replacement Engine
Most replacements completed within 3-5 days.
Variant HistoryLand Rover Discovery 300Tdi - Engine History & Specs at a Glance
When the 300Tdi engine was introduced to the Land Rover Discovery Series I, it represented a significant refinement over the earlier 200Tdi, bringing improved intercooling, better refinement, and enhanced durability to the iconic 4x4.
Variant HistoryLand Rover Discovery 300Tdi - Engine History & Specs at a Glance
When the 300Tdi engine was introduced to the Land Rover Discovery Series I, it represented a significant refinement over the earlier 200Tdi, bringing improved intercooling, better refinement, and enhanced durability to the iconic 4x4.
Land Rover Discovery 300Tdi
Fuel TypeDiesel
Engine Size Range2.5L (2495cc)
Power Output Range111hp (82kW)Engine History Timeline
300Tdi (2.5L Turbo Diesel) 111hp, introduced to the Discovery Series I, featuring an intercooler, revised cylinder head, and improved fuel injection over the 200Tdi.
End of 300Tdi production in the Discovery replaced by the TD5 engine in the Series II, though the 300Tdi architecture remained in the Defender until 2006.
Key Specs Snapshot
Fuel TypeDieselEngine Size Range2.5L (2495cc)Power Output Range111hp (82kW)Years Produced1994-1998Every engine fitted to the Land Rover Discovery 300Tdi is covered below, with UK rebuilt pricing and known failure points.
Land Rover Discovery 300Tdi Engine Codes - Specifications & Replacement CostLand Rover Discovery 300Tdi Engine Codes - Specifications & Replacement Cost
2.5L Diesel (1994-1998)
Power Output111hpYears Fitted1994-1998
Compatible Trim Levels
- Discovery 300Tdi S
- Discovery 300Tdi ES
- Discovery 300Tdi GS
- Discovery 300Tdi LX (Note: Trim levels primarily denote equipment; automatic variants may feature specific EGR configurations requiring compatibility verification).
Find your exact engine code, specs and UK replacement cost guide.
Used
Tested, ready-to-fit engine
£800-£1,500
Reconditioned
Addressed known issues, tested
£1,800-£3,000
Rebuilt
Full teardown, upgraded internals
£2,500-£4,500
Common Failure
Head gasket failure due to original plastic locating dowels, injector seal leaks causing "black death" carbon buildup, and fuel return pipe cracks are commonly reported issues, typically emerging between 100,000 and 150,000 miles.
The Land Rover Discovery 300Tdi is widely regarded as one of the most robust and mechanically simple diesel engines Land Rover ever produced. However, age-related wear on specific components is inevitable. Rebuilt engines sourced through EnginesMarket include upgraded components addressing these original failure points, backed by a minimum 12-month unlimited-mileage warranty.
Why the Land Rover Discovery 300Tdi Suffers Thermal Stress
Affected Vehicles
Land Rover Discovery 300Tdi (300Tdi, 1994-1998)
Typical Failure Mileage
100,000-150,000+ miles
Root Cause
Original factory plastic cylinder head locating dowels can shear under thermal stress, allowing head movement and subsequent gasket failure.
Why It Happens
Original factory plastic cylinder head locating dowels can shear under thermal stress, allowing head movement and subsequent gasket failure.
Dealer (parts + labour)
£1,200-£1,800
Specialist (parts + labour)
£800-£1,200
What it involves
Replacing the gasket and upgrading to steel locating dowels to prevent recurrence.
Suitability
Highly recommended preventative fix if caught before severe block warping.
1 - 2 daysDealer (parts + labour)
£3,500-£5,500
Specialist (parts + labour)
£2,500-£4,500 [ESTIMATED]
What it involves
Supply & fit, upgraded components addressing the original failure point, 12-month warranty.
Suitability
The right call if the block or head has warped beyond machining limits.
1 - 2 daysAll 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 Minor | £1,200-£1,800 | £800-£1,200 | Replacing the gasket and upgrading to steel locating dowels to prevent recurrence. | Highly recommended preventative fix if caught before severe block warping. | 1 - 2 days |
 Full Replacement - rebuilt/reconditioned engine Best Value | £3,500-£5,500 | £2,500-£4,500 [ESTIMATED] | Supply & fit, upgraded components addressing the original failure point, 12-month warranty. | The right call if the block or head has warped beyond machining limits. | 1 - 2 days |
Our Recommendation
Our Recommendation
For minor injector leaks or early head gasket seepage, targeted specialist repair with steel dowel upgrades is highly cost-effective. However, if the engine has suffered catastrophic overheating or severe head corrosion, a full rebuilt engine with all modern upgrades is the most reliable long-term solution to protect your classic Discovery.
Don't Let Engine Failure Write Off Your Land Rover Discovery 300Tdi
Don't risk a catastrophic failure ruining your classic Series I Discovery. By comparing quotes through EnginesMarket, you secure a rebuilt or reconditioned 300Tdi engine with upgraded steel dowels and improved sealing components, all backed by a comprehensive 12-month unlimited mileage warranty. Avoid main dealer premiums and benefit from nationwide supply and fit options tailored to your exact vehicle.
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 Land Rover Discovery 300Tdi. Every engine supplied through EnginesMarket carries a minimum 12-month unlimited mileage warranty - always confirm exact terms with your chosen supplier."
Land Rover Discovery 300Tdi Engine ReplacementFrequently Asked Questions
Question 1How much does a Land Rover Discovery 300Tdi engine replacement cost-
A rebuilt Land Rover Discovery 300Tdi engine typically costs between £2,500 and £4,500 for supply only, while reconditioned units start from £1,800.
- Prices vary based on engine condition and whether you choose supply-only or nationwide supply & fit.
- Rebuilt engines include upgraded steel dowels to prevent known head gasket failures.
Question 2What are the common signs of 300Tdi engine failure in a Land Rover Discovery-
Owners often report white smoke from the exhaust, unexplained coolant loss, or a mayonnaise-like substance under the oil filler cap.
- A distinct "chuffing" noise and black carbon buildup around the injectors indicate failing injector seals.
- Overheating under load is a primary warning sign of head gasket compromise.
Question 3Is it worth replacing the engine in a 1994-1998 Land Rover Discovery 300Tdi-
Yes, clean, well-maintained Discovery 300Tdi models are increasingly sought-after classics, typically valued between £3,000 and £8,000+.
- A £2,500-£4,500 rebuilt engine investment protects an appreciating asset and restores factory reliability.
- Rebuilt 300Tdi engines include engineering fixes not present in the original 1990s units.
Question 4How long does a Land Rover Discovery 300Tdi engine replacement take-
A standard supply and fit service for the Land Rover Discovery 300Tdi typically takes 2 to 3 days.
- This includes the physical engine swap, cooling system flush, and thorough road testing.
- Supply-only orders can be dispatched nationwide within 24-48 hours of quote acceptance.
Question 5What is the difference between a used and a rebuilt Land Rover Discovery 300Tdi engine-
A used 300Tdi engine is a direct salvage pull with no guarantees beyond a short startup warranty.
- A rebuilt engine is fully stripped, cleaned, and fitted with new bearings, seals, and upgraded steel head dowels.
- Rebuilt engines come with a minimum 12-month unlimited mileage warranty, offering far greater peace of mind for a classic vehicle.
Why Choose UsCompare Land Rover Discovery 300TdiEngine PricesToday
100+ Land Rover Discovery 300Tdi engines supplied through our network
12-Month Warranty on every rebuilt Land Rover Discovery 300Tdi engine
Nationwide UK delivery
supply & fit available for your classic Discovery
Don't overpay at the main dealer. Comparing quotes through EnginesMarket is 100% free and no-obligation, connecting you directly with vetted UK specialists who hold verified, warranty-backed replacement engines specifically for your Land Rover Discovery 300Tdi.
Enter your registration
and get matched with verified Land Rover Discovery 300Tdi specialists.