Is the Land Rover Range Rover P440e engine reliable?

The AJ20P6 combustion engine itself is a robust Ingenium six-cylinder unit. However, the PHEV system introduces additional complexity. Known issues include BECM failure, electric heater failure, and battery degradation over time. With proper maintenance and software updates, most owners report satisfactory reliability.

What are the common problems with the Land Rover Range Rover P440e?

BECM (Battery Energy Control Module) failure (causing EV warnings and charging issues), electric heater failure (no cabin heat in EV mode), high-voltage battery degradation, and poor fuel economy when running on petrol alone (mid-20s MPG).

Is it worth replacing a Range Rover P440e engine, or should I scrap the car?

Apply the 60% Land Rover scrap threshold: if your Range Rover is worth £60,000 and a recon engine is £9,000 (15%), it's absolutely worth it. Even with a £15,000 battery replacement, total cost (£24,000) is 40% of the vehicle's value — still within the threshold. These are high-value vehicles that justify significant repair spend.

How do I find my Land Rover Range Rover P440e engine code?

The engine code is listed on the VIN plate and vehicle documentation. The P440e uses the AJ20P6 (also known as PT306) — a 3.0-litre turbocharged straight-six petrol engine with a 105kW electric motor. Tell us your registration date and we'll confirm it for free.

Can I repair the BECM, or does it need replacement?

The BECM typically requires replacement rather than repair (£1,000–£3,000). It's a critical component that manages the high-voltage battery — a faulty BECM can leave the vehicle undriveable. Always use a JLR specialist with the correct diagnostic equipment for this work.

Land Rover Range Rover P440e2022–present1 Engine Code (PHEV)

Land Rover Range Rover P440e Engine Replacement — Compare Prices & Get Quotes

Name: Land Rover Range Rover P440e UK Engine Enquiry Data 2025
Creator: LandRoverEngine.uk

The flagship plug-in hybrid Range Rover — a 3.0-litre turbocharged straight-six petrol engine mated to a 105kW electric motor. Get quotes from specialists who understand this complex PHEV system, supply & fit available nationwide.

Supply & Fit Available

12-Month Warranty

Nationwide Delivery

12 Specialists

Supply & Fit Available

12-Month Warranty

Nationwide Delivery

12 Specialists

Range Rover P440e Engines — from £3,000 to £12,000Common code: <a href='https://landroverengine.uk/engine/aj20p6'>AJ20P6</a> (PT306)

Range Rover P440e Engines — from £3,000 to £12,000· Common code: <a href='https://landroverengine.uk/engine/aj20p6'>AJ20P6</a> (PT306)

Instant QuotesNo Obligation100% FreeReconditionedRebuiltUsedSupply & Fit AvailableUK-Wide Network

The P440e THROUGH TIME — Era Map

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

Era Note

One PHEV powertrain throughout this badge's history — updated to P460e from 2023.

GenerationYearsEngine CodeReliabilityRecon CostEra Note

Range Rover L460 BMW 320d Range Rover L460

2022–2023AJ20P6 (PT306) — 3.0L PHEV★★★☆☆ [NEWLY ASSIGNED — see Data Note]£6,000–£12,000 [PLACEHOLDER — confirm vs cost sheet]One PHEV powertrain throughout this badge's history — updated to P460e from 2023.

Why use this era map?

This table is the single source every other section on this page matches — 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 Range Rover P440e Engine Replacement Costs

Supply Only£6,000–£12,000

Fitted (Indie)£7,500–£14,000

Warranty12–24 months

Best ForMost owners — best cost/warranty balance

Engine TypeSupply OnlyFitted (Indie)WarrantyBest For

Used Engine£3,000–£5,000£4,000–£6,5001–6 monthsBudget priority; short-term ownership

Reconditioned Engine£6,000–£12,000£7,500–£14,00012–24 monthsMost owners — best cost/warranty balance

Rebuilt Engine£8,000–£15,000£9,500–£17,50012–24 monthsLong-term ownership; 3+ year horizon

Main Dealer New£12,000–£18,000£14,000–£21,00024–36 monthsInsurance jobs, warranty claims

Figures above reflect the only engine generation this badge ever used — the AJ20P6 PHEV. See the Era Map above for era-specific pricing. Note that battery replacement costs are separate — typically £8,000–£15,000 once the warranty expires.

Labour estimate: Fitting a Range Rover P440e engine typically takes 15–25 hours at £65–£95/hr (independent). The complex PHEV system and high-voltage battery add significant labour time compared to non-hybrid engines.

→ Compare Range Rover P440e engine prices from UK specialists

Common Problems

1. BECM (Battery Energy Control Module) Failure

Symptoms: "EV temporarily not available" warning, intermittent charging issues, failure to charge to 100%, severe electrical faults, drive system warnings.

Typical mileage: Any mileage — can affect low-mileage examples.

Repair cost: £1,000–£3,000 (BECM replacement and programming).

Replacement cost: N/A — repair only; if ignored, the vehicle may become undriveable.

🔴 Immediate - book inspection urgently if warnings appear.

Our recommendation:

The BECM is a known failure point on Range Rover PHEV models including the P440e. Symptoms can be intermittent and confusing — charging may start and stop unpredictably. If you experience any electrical issues or EV mode warnings, have the BECM inspected immediately. A faulty BECM can leave the vehicle stranded and requires specialist diagnostic equipment.

1. BECM (Battery Energy Control Module) Failure

Symptoms: "EV temporarily not available" warning, intermittent charging issues, failure to charge to 100%, severe electrical faults, drive system warnings.

Typical mileage: Any mileage — can affect low-mileage examples.

Repair cost: £1,000–£3,000 (BECM replacement and programming).

Replacement cost: N/A — repair only; if ignored, the vehicle may become undriveable.

🔴 Immediate - book inspection urgently if warnings appear.

Our recommendation:

2. Electric Heater Failure

Symptoms: EV mode only available in warm weather, no cabin heat in EV mode, reduced electric range, climate control malfunction.

Typical mileage: 20,000–60,000 miles.

Repair cost: £800–£2,000 (electric heater replacement).

Replacement cost: N/A — repair only.

🟠 Check - book inspection urgently if symptoms appear.

Our recommendation:

The electric heater that provides cabin heating in EV mode is a known failure point on JLR PHEVs. When it fails, the car may refuse to enter EV mode unless the climate control is switched off. This is particularly problematic in winter when cabin heat is essential. Have the system inspected if you notice any climate-related EV mode issues.

3. High-Voltage Battery Degradation

Symptoms: Reduced EV range, longer charging times, battery warning lights, reduced power in EV mode.

Typical mileage: 60,000–100,000 miles (accelerated by frequent rapid charging).

Repair cost: £8,000–£15,000 (battery replacement).

Replacement cost: N/A — repair only; battery is a wear item.

🟡 Monitor - book inspection soon if range noticeably drops.

Our recommendation:

The 38.2 kWh battery has a six-year/100,000km warranty. Once this expires, replacement costs are significant. To maximise battery life, avoid frequent rapid charging, keep the battery between 20% and 80% for daily use, and ensure the cooling system is maintained. If you notice a significant drop in EV range, have the battery health checked.

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Range Rover P440e — 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.

Range Rover P440e — 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 SenseBECM failure✅ Yes£1,000–£3,000Essential repair — vehicle may be undriveable without itElectric heater failure✅ Yes£800–£2,000Essential for winter EV use — repair when symptoms appearBattery degradation⚠️ Sometimes£8,000–£15,000Only viable if the rest of the vehicle is in excellent conditionEngine mechanical failure✅ Yes (if caught early)£3,000–£12,000Complex but repairable by specialistCatastrophic PHEV system failure❌ Usually NoFull system replacementMultiple component failures may exceed vehicle value

Buying This P440e? Check These First

Buy If

Full service history with JLR-approved PHEV maintenance
BECM software updates completed and no electrical warnings
Battery health report showing >85% state of health
Remaining battery warranty (six years/100,000km from new)

Avoid If

"EV temporarily not available" or charging warnings — potential BECM issue
No cabin heat in EV mode — electric heater failure
Battery range significantly below expected (70 miles WLTP)
No service history — PHEV systems are complex and unforgiving of neglect

Closing Verdict

The P440e is a complex, high-tech luxury SUV that offers impressive EV range but comes with PHEV-specific vulnerabilities. The BECM and electric heater are known weak points, and battery replacement costs are substantial. A £9,000 reconditioned engine on a Range Rover valued at £60,000 is 15% of the car's value — well worth it. However, always factor in potential battery costs when assessing a used example.

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

→ Compare Range Rover P440e 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 Range Rover P440e engine prices before you buy

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Buying Checklist

Before you buy a used Land Rover Range Rover P440e (or before you commit to an engine replacement), check these:

EV Mode — Test EV-only operation; any warnings or refusal to engage?

Charging — Does it charge to 100% consistently? Any intermittent stops?

Cabin Heat — Does the heater work in EV mode? (electric heater failure)

Service History — Including PHEV-specific maintenance and software updates

Battery Health — Request a battery health report (state of health)

Warning Lights — Any BECM, drive system, or hybrid system warnings?

Fuel Economy — Running on petrol alone should return reasonable MPG

MOT History — Check for emissions failures and corrosion

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.

AJ20P6 (PT306)

Years2022–present

Power440 PS (324 kW) system

2025 Enquiries— (pattern data)

Avg. Recon Cost£6,000–£12,000 [PLACEHOLDER]

Engine CodeYearsPower2025 EnquiriesAvg. Recon Cost

AJ20P6 (PT306)2022–present440 PS (324 kW) system— (pattern data)£6,000–£12,000 [PLACEHOLDER]

Technical Specs

Combustion Engine

Displacement2,996 cc

Cylinders6-cylinder inline

Compression Ratio10.5:1 (estimated)

Fuel SystemDirect injection

TurbochargerSingle turbocharged with intercooler

PHEV System Specs

Electric Motor105 kW (143 PS) permanent magnet synchronous

Battery38.2 kWh (31.8 kWh usable) lithium-ion

EV RangeUp to 70 miles (WLTP)

Transmission8-speed ZF automatic

→ Compare Range Rover P440e engine prices for your Land Rover

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Market Intelligence

Most Common Failure

BECM (Battery Energy Control Module) — reported across multiple PHEV models

Average Enquiry Mileage

35,000

miles (relatively new vehicles) 【PATTERN DATA】

Average Replacement Cost

£9,000

reconditioned, supply only 【PLACEHOLDER — confirm vs cost sheet】

Most Requested Engine Code

AJ20P6 (only code for this badge) 【PATTERN DATA】

Peak Enquiry Season

Winter — electric heater and battery issues more apparent 【PATTERN DATA】

Regional Demand

South East24%

London20%

South West (16%) 【PATTERN DATA】

Regional Demand Breakdown

24%South East

20%London

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 Range Rover P440e Owners Trust LandRoverEngine.uk

Trusted Range Rover P440e Engine Suppliers
every garage and engine rebuilder in our network is vetted, rated and reviewed by real Range Rover owners, with specialists who genuinely understand the AJ20P6 PHEV system — including its complex BECM, electric heater, and high-voltage battery integration.
Compare Range Rover P440e Engine Replacement Companies
see prices, warranty terms and supply & fit options side-by-side before you commit, all from specialists experienced with this sophisticated 3.0-litre plug-in hybrid powertrain.
UK Engine Replacement Services for P440e
supply-only or full supply & fit available nationwide, covering everything from BECM replacement to full engine swaps on your L460 Range Rover PHEV.

Find the best Land Rover Range Rover P440e engine replacement UK drivers rely on. Compare prices from trusted specialists on EnginesMarket today and keep your luxury PHEV Range Rover on the road with confidence.

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