Executive Summary
The average Discovery 4 engine replacement cost in the UK ranges from £3,500 to £6,500 for a fully fitted, reconditioned 3.0-litre TDV6/SDV6 engine. Used units start from £1,500, while brand-new OEM replacements can exceed £8,000. Labour typically adds £900 to £1,500 depending on the specialist and region.
Engine Finders is a price comparison platform, not a direct engine seller. Final pricing, warranty terms, and availability vary by vetted UK supplier. Professional diagnosis is recommended before purchasing any replacement engine.
Detailed Breakdown: Discovery 4 Engine Prices
The Land Rover Discovery 4 (L319, 2009 to 2016) predominantly features the 3.0-litre V6 diesel. Understanding the Discovery 4 3.0 engine cost requires evaluating your options:
Used Engines: £1,500 to £2,500. High risk due to known timing chain and oil pump issues on high-mileage examples. Warranties are typically 30 to 90 days. Our guide to buying a used engine safely explains what to verify before committing.
Reconditioned Engines: £3,000 to £5,000. The most popular choice. Includes new timing chains, tensioners, oil pumps, and gaskets. Warranties range from 6 to 12 months.
New/OEM Engines: £7,000 to £9,000+. Rarely cost-effective for older models but offers maximum reliability.
When evaluating Land Rover Discovery 4 engine replacement cost, always factor in the Discovery 4 engine labour cost, which averages 14 to 18 hours at £70 to £110 per hour. Our engine replacement cost guide breaks down regional labour rates across the UK.
Rebuild vs Replace: What’s Best for Your Discovery 4?
Choosing between a Discovery 4 engine rebuild vs replace depends on the failure type. A full rebuild by a specialist costs £2,500 to £4,000 but requires stripping the vehicle down twice (removal and refitting). A pre-reconditioned Discovery 4 TDV6 replacement is often more economical, reducing workshop time and providing a comprehensive warranty on the entire unit. Our engine repair versus replacement guide walks through the full financial decision.
For 2026, the TDV6 swap cost remains stable, but suppliers increasingly mandate professional fitting to validate warranties. For a detailed cost breakdown specific to this engine, see our Discovery 4 TDV6 engine swap cost guide, or compare verified options from vetted UK suppliers.
What’s Included in a Reconditioned TDV6?
A reputable reconditioned 3.0 TDV6 should include:
- New timing chains, guides, and tensioners (critical failure point).
- Upgraded oil pump and pressure relief valve.
- New head gasket, seals, and bearings.
- EGR valve and cooler inspection/cleaning.
- Minimum 6-month, unlimited-mileage warranty.
The most catastrophic TDV6 failure mode is crankshaft fracture. Our guide to Discovery 4 TDV6 crankshaft failure explains why an updated crankshaft matters in any reconditioned unit. Before buying, read our advice on what to check before buying a reconditioned engine online to ensure comprehensive warranty coverage.
Practical Takeaways
Best Value: Reconditioned TDV6 from a Land Rover specialist (£4,500 to £5,500 fully fitted).
Avoid: Used engines over 100,000 miles without verifiable timing chain replacement history. Our TDV6 and SDV6 real mileage data shows what durability to realistically expect.
Next Steps: Ready to compare quotes? Engine Finders connects you with vetted UK suppliers for no-obligation quotes. For other models in the range, our Land Rover Discovery engine pages cover availability across all generations.
Frequently Asked Questions
What is the average Discovery 4 engine replacement cost?
A reconditioned Discovery 4 TDV6 engine typically costs £3,000 to £5,000, with labour adding £900 to £1,500. Total fitted cost ranges from £3,500 to £6,500. Used units start at £1,500 but carry higher reliability risks. Compare quotes from vetted UK suppliers for accurate pricing.
Is it cheaper to rebuild or replace a Discovery 4 engine?
Replacing with a pre-reconditioned unit is usually more cost-effective. A full rebuild costs £2,500 to £4,000 plus 14 to 18 hours of labour for removal and refitting, often exceeding the price of a swapped reconditioned engine with a better warranty.
How long does a Discovery 4 engine swap take?
Professional replacement requires 14 to 18 hours of labour. This translates to 3 to 5 working days in an independent specialist workshop, allowing time for ECU coding, bleeding the fuel system, and road testing.
What are the common failure points of the 3.0 TDV6?
The 3.0 TDV6 is prone to timing chain stretch, oil pump failure, crankshaft fracture, and EGR cooler leaks. Ensure any replacement engine includes upgraded timing components and a new oil pump to prevent premature recurrence.
