What 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.

How 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.

What 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.

Land Rover Discovery 300Tdi SPECIALISTS

Land Rover Discovery 300Tdi Engine Replacement Compare 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.

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Land Rover Discovery 300Tdi Engine

from£2,500 to £4,500...

Usedfrom £800
Reconditionedfrom £1,800
Common codes300Tdi

Land Rover discovery 300Tdi Used Engine — 300Tdi

Land Rover discoveryUsed Engine — 300Tdi

Land Rover discovery 300Tdi Reconditioned Engine — 300Tdi

Land Rover discoveryReconditioned Engine — 300Tdi

Land Rover discovery 300Tdi Rebuilt Engine — 300Tdi

Land Rover discoveryRebuilt Engine — 300Tdi

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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

Land 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.

1994
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.
1998
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.

Every engine fitted to the Land Rover Discovery 300Tdi is covered below, with UK rebuilt pricing and known failure points.

Engine Codes & Pricing

Land Rover Discovery 300Tdi Engine Codes Specifications & Replacement Cost

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

300Tdi — 2.5L Diesel (1994-1998)

Power Output: 111hp
Years Fitted: 1994-1998

Can’t find your exact engine code?-> Get quotes for 300Tdi Land Rover Discovery 300Tdi engine replacement

-> Get quotes for 300Tdi Land Rover Discovery 300Tdi engine replacement

Common failure points and repair options

Head Gasket Failure

Affected: 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.

Repair options

Repair tier	Dealer price	Specialist price
Minor/Preventative	£1,200-£1,800	£800-£1,200
Full Replacement - rebuilt/reconditioned engine	£3,500-£5,500	£2,500-£4,500 [ESTIMATED]

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.

Injector Seal Leaks & Return Pipe Failure

Affected: Land Rover Discovery 300Tdi (300Tdi, 1994-1998)
Typical failure mileage: 80,000-120,000 miles

Root cause

Aging copper injector seats and brittle plastic fuel return pipes allow combustion gases and fuel to escape, creating severe carbon buildup around the injectors.

Repair options

Repair tier	Dealer price	Specialist price
Minor/Preventative	£400-£700	£250-£450
Full Replacement - rebuilt/reconditioned engine	£3,500-£5,500	£2,500-£4,500 [ESTIMATED]

Our recommendation

-> Compare rebuilt 300Tdi Land Rover Discovery 300Tdi engine prices

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.

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FAQ

Land Rover Discovery 300Tdi Engine ReplacementFrequently Asked Questions

Everything Land Rover Discovery 300Tdi owners usually ask before choosing a rebuilt, reconditioned or used replacement engine.

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.

-> Compare Land Rover Discovery 300Tdi engine replacement prices today.

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.

-> Check if your Land Rover Discovery 300Tdi qualifies for a rebuilt engine quote.

Why Choose Us

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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.

100+100+ Land Rover Discovery 300Tdi engines supplied through our network

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