Searching for the Discovery 4 engine replacement cost usually means something has gone wrong: a knocking noise, a warning light, smoke from the exhaust, or a garage telling you the engine is beyond economical repair. The Land Rover Discovery 4, built from 2009 to 2016, is a capable and refined seven-seat SUV, yet its diesel and petrol engines can fail, and replacing one is a major expense. This guide explains what the job realistically costs in the UK, what pushes the price up or down, and how to choose between a new, reconditioned or used unit.
Prices vary widely between suppliers, so it helps to compare the engine, the warranty and the fitting together rather than the headline figure alone. If you want to see how a specialist supplier presents reconditioned engines for the Discovery 4, you can Go Here and compare what is included before you request quotes. With that in mind, the sections below break the cost down piece by piece.
Every figure in this article is a realistic UK estimate for 2026, not a fixed quote. Your final price depends on the exact engine code, the condition of the vehicle, and the workshop you choose, so use these ranges as a budgeting tool and always ask for a written, itemised estimate.
How Much Does a Discovery 4 Engine Replacement Cost?
For most UK owners, the all-in Discovery 4 engine replacement cost lands between £4,500 and £9,000 when a reconditioned engine is fitted by a specialist. That figure covers the engine itself, labour, fluids, gaskets and a sensible allowance for small parts. A used engine lowers the entry price, while a brand-new or fully remanufactured unit from the manufacturer network pushes it well beyond £10,000.
| Route | Engine only | Labour & extras | Typical fitted total |
|---|---|---|---|
| Used / low-mileage engine | £1,800 – £3,500 | £1,200 – £2,500 | £3,000 – £5,500 |
| Reconditioned engine | £3,500 – £6,500 | £1,200 – £2,500 | £4,500 – £9,000 |
| New / remanufactured engine | £7,000 – £10,000+ | £1,500 – £3,000 | £8,500 – £13,000+ |
Discovery 4 Engine Replacement Cost by Engine Type
The Discovery 4 was sold with three main engines, and each has its own parts cost and its own set of known weak points. Knowing which one sits under your bonnet is the first step to an accurate quote.
2.7 TDV6 Diesel (2009 – 2012)
The 2.7 litre twin-turbo V6 diesel is the most commonly replaced unit. Typical failures include worn big-end and crankshaft bearings, damaged connecting rods and low oil pressure caused by missed servicing. A reconditioned 2.7 TDV6 usually costs £3,500 to £5,500, which makes it the most affordable of the three to replace.
3.0 SDV6 and TDV6 Diesel (2010 – 2016)
The 3.0 litre sequential-turbo diesel is quieter, stronger and more efficient, and it is the engine most buyers look for. When it does fail, the usual causes are turbo faults, timing chain wear and oil starvation. Expect £4,500 to £6,500 for a reconditioned engine, with higher figures for later, higher-output versions.
5.0 V8 Petrol (2010 – 2016)
The naturally aspirated and supercharged petrol V8 is smooth and rare on the used market, which keeps parts prices firm. Budget £5,500 to £8,500 for a reconditioned unit, and more for the supercharged variant, plus the cost of the extra ancillaries it carries.
What Affects the Cost of a Discovery 4 Engine Replacement?
Two Discoveries with the same engine can receive quotes thousands of pounds apart. These are the main reasons why.
- Engine condition and source. New, remanufactured, reconditioned and second-hand engines each sit in a different price band and carry different guarantees.
- Engine code and specification. Power output, turbo layout and emissions equipment change the parts list and the labour time.
- Labour rates. A franchised dealer charges more per hour than an independent Land Rover specialist, and workshop location matters too.
- Ancillaries replaced at the same time. Turbochargers, injectors, timing components, the flywheel, the oil cooler and the water pump are best renewed during the swap.
- Warranty length. A longer, parts-and-labour warranty costs more upfront but removes the risk of paying twice.
- Hidden damage. Contaminated oil, a blocked DPF or a damaged gearbox can add cost once the old engine is out.
Signs Your Discovery 4 Engine May Need Replacing
Replacement is a last resort, and a proper diagnosis should always come first. The symptoms below suggest internal damage that repair may not fix.
- A deep knocking or rumbling sound that rises with engine speed.
- Low oil pressure warnings, or oil that looks metallic or milky.
- Heavy blue or white smoke from the exhaust.
- Sudden power loss, limp mode, or repeated misfire codes.
- Coolant loss with no visible leak, which can point to a head gasket or cracked block.
New vs Reconditioned vs Used Engine: Which Is Best?
Choosing the right route is the biggest single decision in a Discovery 4 engine replacement. Here is how the three options compare.
Used
Lowest price, but mileage and history are uncertain, and warranties are usually short. Best for older vehicles with a limited budget.
Reconditioned
Stripped, machined and rebuilt with new wear parts. The strongest balance of cost, reliability and warranty for most owners.
New / Remanufactured
Factory-spec quality and the longest cover, with the highest price. Suits high-value, low-mileage vehicles.
For the majority of owners, a reconditioned engine from a reputable specialist offers the best long-term value. It restores the original tolerances, includes fresh bearings, seals and gaskets, and normally ships with a written warranty.
The Engine Replacement Process and Timeline
A professional swap is a structured job. Knowing the stages helps you check that a quote is complete.
- DiagnosisCompression, oil analysis and a scan confirm that replacement is the right fix.
- RemovalFluids are drained, ancillaries are disconnected and the old engine is lifted out.
- PreparationThe mounts, sump, coolant system and turbo feed lines are cleaned and inspected.
- FittingThe new engine goes in with fresh gaskets, filters and fluids, plus any agreed replacement parts.
- TestingThe workshop checks pressures, codes and temperatures and road-tests the vehicle.
Most jobs take three to six working days, although parts availability and extra repairs can lengthen that.
How to Reduce Your Discovery 4 Engine Replacement Cost
- Request at least three itemised quotes and compare the warranty terms, not only the price.
- Ask whether your old engine has a core value that offsets the cost.
- Choose an independent Land Rover specialist rather than a main dealer.
- Replace wear items in one visit to avoid paying for the same labour twice.
- Confirm the exact engine code so you are not sold the wrong unit.
Frequently Asked Questions
How much does a Discovery 4 engine replacement cost?
Most UK owners pay roughly £4,500 to £9,000 fitted for a reconditioned engine. A used engine can bring the total nearer £3,000 to £5,500, while a new or remanufactured unit can exceed £10,000.
Is it worth replacing a Discovery 4 engine?
Often yes, provided the body, chassis and gearbox are sound. A well-kept Discovery 4 can be worth more than the cost of the work, and a warrantied engine can add many more years of use.
How long does an engine replacement take?
A typical swap takes three to six working days, depending on parts availability and any extra repairs found during the strip-down.
Which Discovery 4 engine is the most reliable?
The 3.0 SDV6 is generally considered more robust than the earlier 2.7 TDV6, but condition, servicing history and regular oil changes matter more than the badge.
Should I replace the turbo and timing parts at the same time?
Usually yes. Fitting a fresh engine alongside worn ancillaries risks early failure, so many specialists recommend replacing wear items during the swap.
Final Thoughts on Discovery 4 Engine Replacement Cost
The Discovery 4 engine replacement cost is significant, but it is manageable when you understand the options. Set a realistic budget of £4,500 to £9,000 for a fitted, reconditioned engine, confirm your engine code, insist on a written warranty, and compare itemised quotes. Done properly, a replacement engine can keep a much-loved Discovery working for years to come.