How much does a Land Rover Discovery P300 engine replacement cost in the UK?

A reconditioned P300 engine (204PT) typically costs £2,200–£3,800 supply only. Fitting adds £1,000–£1,400. As a relatively modern engine, used and reconditioned supply is still developing – prices are indicative. Use our calculator for a figure specific to your vehicle.

Is the Land Rover Discovery P300 engine reliable?

The 204PT is a responsive turbo petrol from JLR's Ingenium family. However, it has known issues: the CVVL system can fail causing misfires, it's very sensitive to fuel quality (low-grade fuel can destroy pistons), and oil leaks are common. With proper maintenance and premium fuel, it's a capable engine.

What are the common problems with the Discovery P300?

The main issues are CVVL (Continuous Variable Valve Lift) system failure causing misfiring/rough running, fuel-quality sensitivity that can lead to piston damage, and oil leaks from the rear crankshaft seal and oil filter housing. The oil filter housing crack is a known recall issue.

Is it worth replacing a Discovery P300 engine, or should I scrap the car?

Given the Discovery's high value (typically £35,000–£70,000+), a £2,200–£4,500 reconditioned engine is a small fraction of the vehicle's worth. Replacement is almost always financially viable. Even at the higher end, it rarely exceeds our 60% Land Rover threshold against current market values.

How do I find my Discovery's engine code?

The P300 uses the 204PT (also PT204 or AJ20P4) 2.0-litre Ingenium petrol. This is stamped on the engine block and listed on your V5C. The P300 badge itself confirms the engine – it's the only 300 PS 2.0-litre petrol offered in the Discovery V.

Can I repair a P300 engine issue, or does it need replacement?

Most issues – CVVL system failure, oil leaks, ignition system wear – are repairs, not full replacements. The 204PT is a complex modern engine but specialists can address these issues. Major internal failure (piston damage from detonation, bottom-end failure) would typically justify replacement over rebuild.

Land Rover Discovery P3002020–present2.0L Turbo Petrol (204PT)

Land Rover Discovery P300 Engine Replacement — Compare Prices & Get Quotes

Name: Land Rover Discovery P300 UK Engine Enquiry Data 2025
Creator: LandRoverEngine.uk

Get quotes today from trusted UK Land Rover specialists. Compare reconditioned, rebuilt and used 204PT 2.0-litre turbo petrol engines for the Discovery P300 — the responsive Ingenium petrol option with 300 PS and 400 Nm. Supply & fit available nationwide.

Supply & Fit Available

12-Month Warranty

Nationwide Delivery

12 Specialists

Supply & Fit Available

12-Month Warranty

Nationwide Delivery

12 Specialists

Land Rover Discovery P300 Engines — from £1,500 to £4,500Engine code: 204PT (<a href='https://landroverengine.uk/engine/ford-si4-pt204'>PT204</a>/AJ20P4)

Land Rover Discovery P300 Engines — from £1,500 to £4,500· Engine code: 204PT (<a href='https://landroverengine.uk/engine/ford-si4-pt204'>PT204</a>/AJ20P4)

Instant QuotesNo Obligation100% FreeReconditionedRebuiltUsedSupply & Fit AvailableUK-Wide Network

Land Rover Discovery P300 — Which Engine Does Your Car Actually Have?

Four generations. Four eras. One guide to reliability, costs and what really matters.

Era Note

Responsive 2.0 turbo petrol — fuel-quality sensitive, CVVL system known issue

GenerationYearsEngine CodeReliabilityRecon CostEra Note

Discovery V (L462) BMW 320d Discovery V (L462)

2020–present204PT (PT204/AJ20P4)★★★☆☆ [NEWLY ASSIGNED — see Data Note]£2,200–£4,200 [PLACEHOLDER — confirm vs cost sheet]Responsive 2.0 turbo petrol — fuel-quality sensitive, CVVL system known issue

Why use this era map?

This table is the single source every other section on this page must match. Sections 2, 4, and 6 reference it rather than restating conflicting figures.

Real UK Cost Data

Verified Reliability

Expert Insights

Updated for 2025

Land Rover Discovery P300 Engine Replacement Costs

Supply Only£2,200–£3,800

Fitted (Indie)£3,200–£5,200

Warranty12–24 months

Best ForMost owners — best cost/warranty balance

Engine TypeSupply OnlyFitted (Indie)WarrantyBest For

Used Engine£1,500–£2,800£2,300–£4,0001–6 monthsBudget priority; lower-mileage salvage units

Reconditioned Engine£2,200–£3,800£3,200–£5,20012–24 monthsMost owners — best cost/warranty balance

Rebuilt Engine£3,200–£4,500£4,200–£5,80012–24 monthsLong-term ownership; maximum reliability

Main Dealer New£5,500–£8,000£7,000–£10,00024–36 monthsInsurance jobs; warranty claims; full provenance

Figures above reflect the current Discovery V P300 generation. As a relatively modern engine, supply of used and reconditioned units is developing — prices are indicative.

Labour estimate: Fitting a Discovery P300 engine typically takes 10–14 hours at £65–£95/hr (independent Land Rover specialist).

→ Compare Discovery P300 engine prices from UK specialists

Common Problems

1. CVVL System Misfire / Rough Running (Ingenium Petrol)

Symptoms: Misfire, rough idle, hesitation on acceleration, engine warning light with Diagnostic Trouble Codes (DTCs) stored in the Powertrain Control Module (PCM).

Typical mileage: 20,000–60,000 miles (varies).

Repair cost: £800–£2,000 [PLACEHOLDER] (CVVL unit replacement).

Replacement cost: N/A — repair only (if caught early; ignored misfire can damage catalytic converter).

🟠 Check - book inspection urgently if engine warning light appears.

Our recommendation:

JLR has identified that the Continuous Variable Valve Lift (CVVL) system can fail on Ingenium I4 2.0-litre petrol engines, causing misfiring and rough running. Diagnosis typically involves following TOPIX 303-01 guidelines. If your P300 is showing an engine warning light with misfire codes, have a specialist inspect the CVVL system promptly — replacement is the usual fix, and delaying can lead to further damage.

1. CVVL System Misfire / Rough Running (Ingenium Petrol)

Symptoms: Misfire, rough idle, hesitation on acceleration, engine warning light with Diagnostic Trouble Codes (DTCs) stored in the Powertrain Control Module (PCM).

Typical mileage: 20,000–60,000 miles (varies).

Repair cost: £800–£2,000 [PLACEHOLDER] (CVVL unit replacement).

Replacement cost: N/A — repair only (if caught early; ignored misfire can damage catalytic converter).

🟠 Check - book inspection urgently if engine warning light appears.

Our recommendation:

2. Fuel Quality Sensitivity / Piston Damage

Symptoms: Detonation (pinking) under load, loss of power, engine knocking, eventual catastrophic failure.

Typical mileage: Any mileage — depends entirely on fuel quality.

Repair cost: £3,000–£6,000 [PLACEHOLDER] (engine rebuild or replacement if pistons destroyed).

Replacement cost: £2,200–£4,500 [PLACEHOLDER] (if damage is extensive).

🔴 Immediate - if you hear knocking or pinking, stop driving immediately.

Our recommendation:

The 204PT is a direct-injection turbo engine and is very demanding on fuel quality. The use of low-quality gasoline often leads to detonation and destruction of pistons. Always use the recommended high-octane fuel (Super unleaded, 97 RON or higher). If you hear any knocking or pinking under acceleration, stop driving immediately and have the engine inspected — piston damage is expensive and often terminal.

3. Oil Leaks (Rear Crankshaft Seal / Oil Filter Housing)

Symptoms: Oil spots under the vehicle, burning oil smell, low oil level warning, visible oil leak from the rear of the engine.

Typical mileage: 30,000–80,000 miles.

Repair cost: £400–£1,200 [PLACEHOLDER] (seal replacement).

Replacement cost: N/A — repair only (if caught early; ignored oil loss can lead to engine damage).

🟠 Check - book inspection urgently if oil leak is detected.

Our recommendation:

Leaks from under the rear crankshaft oil seal are common on the 204PT. Additionally, the oil filter housing may crack and cause oil to leak onto hot components — a known recall issue on some replacement engines. If you notice oil spots under your Discovery or a burning oil smell, have the source identified immediately. Oil leaks can escalate quickly and, in the case of the oil filter housing, pose a fire risk.

Weighing Your Options?

Compare Specialist Quotes When You're Ready

12 vetted Land Rover specialists, covering the P300 2.0-litre Ingenium petrol engine, with a 12-month warranty as standard.

See Discovery P300 Engine Options

Discovery P300 — Repair, Buy, or Replace?

Every 320d has a story. Make the right call with clear data, real-world costs, and honest guidance from UK specialists.

Discovery P300 — Repair, Buy, or Replace?

Every 320d has a story. Make the right call with clear data, real-world costs, and honest guidance from UK specialists.

Can It Be Repaired?

ProblemRepairable?Typical CostWhen It Makes SenseCVVL system misfire✅ Yes£800–£2,000 [PLACEHOLDER]Specialist repair — cheaper than engine replacementFuel-quality piston damage❌ Usually No£2,200–£4,500+Full engine replacement often more cost-effective than rebuildRear crankshaft oil seal leak✅ Yes£400–£1,200 [PLACEHOLDER]Straightforward fix — always worth doingOil filter housing crack✅ Yes£300–£800 [PLACEHOLDER]Essential safety fix — may be covered by recallMajor internal failure (crank, bearings)❌ Usually No£2,200–£4,500+Full engine replacement often more cost-effective

Buying This Discovery P300? Check These First

Buy If

Full Land Rover service history with correct oil spec
Evidence of premium fuel use (Super unleaded) — critical for this engine
CVVL system checked and any recalls completed
Warranty remaining or an extended warranty in place

Avoid If

No evidence of premium fuel use — cheap fuel can destroy this engine
Any sign of engine warning light or misfire codes
Oil leaks from the rear of the engine or around the oil filter housing
Poor service history — this engine demands strict maintenance

Closing Verdict

The Discovery P300 offers a responsive 2.0-litre turbo petrol option for the large SUV, with 300 PS and 400 Nm of torque. However, the Ingenium 204PT has known weaknesses — particularly the CVVL system and fuel-quality sensitivity. Buyers should prioritise vehicles with full service history and evidence of premium fuel use. When maintained correctly, it's a capable and refined engine; neglected examples can be expensive to repair.

Don't guess.Get the right engine at the right price.

→ Compare Discovery P300 engine prices before you buy

Don't Guess. Compare.

Get real quotes from vetted UK specialists and make the right call for your 320d.

→ Compare Discovery P300 engine prices before you buy

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Buying Checklist

Before you buy a used Land Rover Discovery P300 (or before you commit to an engine replacement), check these:

1. Cold Start — Does it start cleanly? Any misfire or rough running?

2. Service History — Full Land Rover main dealer history with correct oil spec

3. Fuel History — Has the vehicle been run on premium unleaded (97 RON+)?

4. Engine Warning Light — Have codes been read? Any CVVL-related codes?

5. Oil Leaks — Check under the vehicle and around the oil filter housing for any signs of leakage

6. Running Quality — Any hesitation, misfire, or rough idle when warm?

7. Oil Consumption — Does it use more than 1L per 1,000 miles?

8. MOT History — Check for emissions-related failures or any advisory notes

Buy smart. Drive with confidence.

A few checks today can save thousands tomorrow. Use this checklist to avoid the most common 320d pitfalls.

Buy smart. Drive with confidence.

A few checks today can save thousands tomorrow. Use this checklist to avoid the most common 320d pitfalls.

Engine Codes

This table's rows match Section 1B's Era Map exactly.

204PT (PT204/AJ20P4)

Years2020–present

Power300 PS (296 bhp) / 400 Nm

2025 Enquiries— (pattern data)

Avg. Recon Cost£2,200–£3,800 [PLACEHOLDER]

Engine CodeYearsPower2025 EnquiriesAvg. Recon Cost

204PT (PT204/AJ20P4)2020–present300 PS (296 bhp) / 400 Nm— (pattern data)£2,200–£3,800 [PLACEHOLDER]

Technical Specs

204PT Ingenium 2.0L Petrol

Displacement1,997 cc

Cylinders4-cylinder inline

Compression Ratio9.5:1 (10.0:1 in earlier variants)

Fuel SystemDirect injection

TurbochargerBorgWarner K03 turbocharger

→ Compare Discovery P300 engine prices for your Land Rover

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Market Intelligence

Most Common Failure

CVVL system misfire — affects Ingenium I4 2.0L petrol engines

Average Enquiry Mileage

30,000

–50,000 miles

[PATTERN DATA]

Average Replacement Cost

£2,800

reconditioned, supply only

[PLACEHOLDER]

Most Requested Engine Code

204

PT (PT204) — sole P300 engine

[PATTERN DATA]

Peak Enquiry Season

Spring/Summer — new model year interest

[PATTERN DATA]

Regional Demand

South East20%

South West15%

Midlands (12%) — premium SUV strongholds

PATTERN DATA

Regional Demand Breakdown

20%South East

FAQ

All prices are indicative UK market ranges based on historical quote data from our network of engine specialists. Actual costs vary by variant, engine code, damage severity and workshop location. Use our free comparison tool to get tailored quotes. Every engine supplied through EnginesMarket carries a minimum 12-month unlimited-mileage warranty — always confirm terms with your chosen supplier.

Why UK Land Rover Discovery P300 Owners Trust LandRoverEngine.uk

Trusted P300 Engine Suppliers
every garage and engine rebuilder in our network is vetted, rated and reviewed by real Discovery owners, as part of the Engine Finders network, covering the modern Ingenium 2.0-litre petrol engine.
Compare P300 Engine Replacement Companies
see prices, warranty terms and supply & fit options side‑by‑side before you commit, with specialists who understand the 204PT's CVVL system and fuel-quality requirements.
UK Engine Replacement Services for the Discovery V
supply‑only or full supply & fit available nationwide, covering the petrol P300 variant of the latest-generation Discovery, with specialist knowledge of modern Land Rover electronics.

Find the best Land Rover Discovery P300 engine replacement UK drivers rely on. Compare prices from trusted specialists on EnginesMarket today and get back on the road with confidence.

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No hidden fees

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Get quotes with zero pressure

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12-Month Warranty

As standard

Nationwide Delivery

Supply & fit available