How much does a Land Rover Defender L663 engine replacement cost in the UK?

A reconditioned L663 engine typically costs £3,000–£12,000 supply only, depending on engine — the 2.0-litre diesel sits at £3,500–£5,800, while the 5.0 V8 can reach £6,000–£12,000. Fitting adds £650–£1,430. Use our calculator for a personalised figure.

Which Land Rover Defender L663 engine is the most reliable?

The AJ20D6 3.0-litre six-cylinder diesel (D250/D300/D350) is generally considered the most dependable L663 engine — it is more refined than the four-cylinder, with early reliability surveys suggesting fewer major failures. The 3.0 P400 petrol is also a strong contender.

What are the common problems with the Land Rover Defender L663?

Timing chain tensioner wear on the 2.0-litre diesel (204DT), turbocharger and emissions system failures on the 3.0-litre diesel (AJ20D6), and BISG belt/cooling fan issues on the 3.0-litre petrol (PT306) — plus the usual JLR electrical gremlins that affect all modern JLR products.

Is the Land Rover Defender L663 reliable?

Reliability is mixed. The 3.0-litre Ingenium engines — both diesel and petrol — have shown fewer major issues than the 2.0-litre four-cylinder diesel, which has a documented timing chain tensioner risk. Early L663 units (2019–2020) are more problematic than later production.

Which Land Rover Defender L663 engine should I avoid?

No engine outright — but a 2.0-litre diesel (D200/D240) without a documented service history and chain inspection is the one purchase we consistently advise against. A high-mileage 5.0 V8 without timing chain history is the second.

How do I know if my Defender L663 engine needs replacing?

Cold-start rattle (2.0 diesel timing chain), whistling under acceleration or reduced power (3.0 diesel turbo), or overheating/check engine light (3.0 petrol cooling system) are the key warning signs. Use our diagnostic calculator for a personalised assessment.

Is it worth replacing a Land Rover Defender L663 engine, or should I scrap the car?

Depends on the car's value. Against a £40,000 L663, a £5,000 AJ20D6 recon is 12.5% of the car's value — safe. Against a low-value high-mileage example, the same recon may approach 20–30% — still well within our 60% Land Rover threshold. On an L663, replacement almost always makes sense.

How long do Land Rover Defender L663 engines last?

The 3.0-litre Ingenium diesels can exceed 150,000–200,000 miles with proper servicing. The 2.0-litre diesel's limiting factor is the timing chain — addressed proactively, it can also reach high mileage. The 5.0 V8 is similarly durable but requires specialist maintenance for the supercharger.

What is the difference between the Defender 90, 110 and 130?

All three share the L663 platform and most engines. The Defender 90 is the 3-door short-wheelbase (2019–present), the 110 is the 5-door standard-wheelbase (2019–present), and the 130 is the extended 5-door (2022–present). Costs vary slightly by body style due to labour access — see each generation's own page for specifics.

How do I find my Land Rover Defender L663 engine code?

Listed on the VIN plate and vehicle documentation; block stamping is visible on the engine itself. Tell us your variant (D200, P400, etc.) and approximate registration date and we'll identify it — 12+ vetted specialists will confirm it for free.

L663 Engine Replacement Cost UK

Name: Land Rover Defender L663 UK Engine Enquiry Data 2025
Creator: LandRoverEngine.uk

Land Rover Defender L663 Engine Codes — The Complete Database

Every engine fitted to the new Defender — from the 2.0-litre four-cylinder Ingenium units to the 5.0-litre supercharged V8 and the new 4.4-litre twin-turbo V8.

Engine CodeFamilyFuelDisplacementPowerYears (L663)

VariantsReliability2025 EnquiriesAvg. Recon Cost204DT2.0 Ingenium

Diesel2.0L (1999cc)200–241 bhp2019–presentD200, D240★★★☆☆ [PROVISIONAL — pending dedicated Engine Page]

— (pattern data)£3,500–£5,800 [EM-QUOTE]AJ20D6 / DT3063.0 IngeniumDiesel, MHEV3.0L (2997cc)

200–351 bhp2020–presentD200, D250, D300, D350★★★★☆ [PROVISIONAL — pending dedicated Engine Page]— (pattern data)£4,500–£7,500 [EM-QUOTE]

PT204 (AJ20P4)2.0 IngeniumPetrol2.0L (1997cc)300 bhp2019–present

P300★★★☆☆ [PROVISIONAL — pending dedicated Engine Page]— (pattern data)£3,000–£5,000 [EM-QUOTE]PT204 (PHEV)2.0 Ingenium

Petrol PHEV2.0L (1997cc)404 bhp (combined)2020–presentP400e★★★☆☆ [PROVISIONAL — pending dedicated Engine Page]

— (pattern data)£3,500–£5,800 [EM-QUOTE]PT306 (AJ20P6)3.0 IngeniumPetrol, MHEV3.0L (2996cc)

400 bhp2019–presentP400★★★★☆ [PROVISIONAL — pending dedicated Engine Page]— (pattern data)£4,500–£7,500 [EM-QUOTE]

508PS (AJ133)5.0 V8Petrol, supercharged5.0L (5000cc)425–525 bhp2021–present

P425, P500, P525★★★★☆ [PROVISIONAL — pending dedicated Engine Page]— (pattern data)£6,000–£12,000 [EM-QUOTE]4.4L Twin-Turbo V8BMW-sourced

Petrol4.4L (4395cc)635 bhp2024–presentP635 OCTA★★★★☆ [PROVISIONAL — pending dedicated Engine Page]

Engine CodeFuelPowerYearsReliabilityEnquiriesAvg. Recon Cost

VariantsReliability2025 Enquiries204DT2.0 Ingenium

Diesel2.0L (1999cc)200–241 bhpD200, D240★★★☆☆ [PROVISIONAL — pending dedicated Engine Page]

— (pattern data)£3,500–£5,800 [EM-QUOTE]AJ20D6 / DT306Diesel, MHEV3.0L (2997cc)

200–351 bhp2020–presentD200, D250, D300, D350— (pattern data)£4,500–£7,500 [EM-QUOTE]

PT204 (AJ20P4)2.0 IngeniumPetrol300 bhp2019–present

P300★★★☆☆ [PROVISIONAL — pending dedicated Engine Page]— (pattern data)PT204 (PHEV)2.0 Ingenium

Petrol PHEV2.0L (1997cc)404 bhp (combined)P400e★★★☆☆ [PROVISIONAL — pending dedicated Engine Page]

— (pattern data)£3,500–£5,800 [EM-QUOTE]PT306 (AJ20P6)Petrol, MHEV3.0L (2996cc)

400 bhp2019–presentP400— (pattern data)£4,500–£7,500 [EM-QUOTE]

508PS (AJ133)5.0 V8Petrol, supercharged425–525 bhp2021–present

P425, P500, P525★★★★☆ [PROVISIONAL — pending dedicated Engine Page]— (pattern data)4.4L Twin-Turbo V8BMW-sourced

Petrol4.4L (4395cc)635 bhpP635 OCTA★★★★☆ [PROVISIONAL — pending dedicated Engine Page]

Overview

Land Rover Defender L663 — Overview

The L663 is the second generation of the modern Defender, launched in 2019 as a radical departure from the traditional body-on-frame design.

Built on Jaguar Land Rover's D7x aluminium monocoque architecture, it introduced independent suspension, advanced electronics, and a full range of Ingenium petrol and diesel engines — marking the first time a Defender offered V8 power since the original.

Key Facts

Platform

JLR D7x aluminium monocoque

Predecessor

Land Rover Defender (L316) — original "old" Defender

Successor

Current model — no successor announced

Sibling body styles in this generation

Defender 90 (3-door), Defender 110 (5-door), Defender 130 (extended 5-door)

Market Intelligence

The L663 Defender generated 292 real UK engine enquiries in 2025 [EM-VERIFIED], concentrated on the 3.0-litre diesel six-cylinder as these vehicles exit manufacturer warranty.

Land Rover Defender L663 — Overview

The L663 is the second generation of the modern Defender, launched in 2019 as a radical departure from the traditional body-on-frame design.

Built on Jaguar Land Rover's D7x aluminium monocoque architecture, it introduced independent suspension, advanced electronics, and a full range of Ingenium petrol and diesel engines — marking the first time a Defender offered V8 power since the original.

Key Facts

Platform

JLR D7x aluminium monocoque

Predecessor

Land Rover Defender (L316) — original "old" Defender

Successor

Current model — no successor announced

Sibling body styles in this generation

Defender 90 (3-door), Defender 110 (5-door), Defender 130 (extended 5-door)

Market Intelligence

The L663 Defender generated 292 real UK engine enquiries in 2025 [EM-VERIFIED], concentrated on the 3.0-litre diesel six-cylinder as these vehicles exit manufacturer warranty.

Best & Worst Engines

Best Diesel Overall

AJ20D6 3.0 D300 (2020–present)

“The six-cylinder Ingenium diesel is genuinely more refined and responsive than the four-cylinder, with early reliability surveys suggesting it is more dependable than previous Land Rover diesel engines”

Who it's for: Buyers who need towing capability without the four-cylinder's risk profile.

Best Petrol Overall

PT306 3.0 P400 MHEV (2019–present)

“The mild-hybrid straight-six delivers 400bhp with smooth, linear power and the 48-volt electric supercharger virtually eliminates lag”

Who it's for: Buyers who want effortless performance and the most polished driving experience in the range.

Highest Risk

204DT 2.0 Ingenium Diesel (pre-2020, no tensioner history)

“The four-cylinder Ingenium diesel has a documented reputation for timing chain tensioner failure, with cold-start rattle as the classic early warning”

Who it's for: Only buyers with full service history and documented chain work.

Most Expensive Failure

508PS 5.0 Supercharged V8

“The supercharged AJ133 V8 is a complex, high-performance unit. When it fails — typically timing chain tensioner wear on pre-2013 design or supercharger coupler wear — repairs require specialist intervention and deep pockets”

Who it's for: Buyers who can absorb five-figure repair bills.

Best Value

AJ20D6 3.0 D250 (2020–present)

“The entry-level six-cylinder diesel offers the refinement of the D300 with slightly lower output, making it the sweet spot for most UK buyers who want six-cylinder torque without the highest purchase price.”

Who it's for: Buyers who prioritise refinement and reliability over outright power.

Most Overlooked

PT204 2.0 P300 (2019–present)

“The four-cylinder petrol Ingenium is often dismissed in favour of the six-cylinder P400, but it delivers 300bhp from a 2.0-litre and avoids the diesel emissions complexity entirely”

Who it's for: Buyers who want petrol reliability without the V8's running costs.

Best Diesel Overall

AJ20D6 3.0 D300 (2020–present)

“The six-cylinder Ingenium diesel is genuinely more refined and responsive than the four-cylinder, with early reliability surveys suggesting it is more dependable than previous Land Rover diesel engines”

Who it's for: Buyers who need towing capability without the four-cylinder's risk profile.

Best Petrol Overall

PT306 3.0 P400 MHEV (2019–present)

“The mild-hybrid straight-six delivers 400bhp with smooth, linear power and the 48-volt electric supercharger virtually eliminates lag”

Who it's for: Buyers who want effortless performance and the most polished driving experience in the range.

Highest Risk

204DT 2.0 Ingenium Diesel (pre-2020, no tensioner history)

“The four-cylinder Ingenium diesel has a documented reputation for timing chain tensioner failure, with cold-start rattle as the classic early warning”

Who it's for: Only buyers with full service history and documented chain work.

Most Expensive Failure

508PS 5.0 Supercharged V8

“The supercharged AJ133 V8 is a complex, high-performance unit. When it fails — typically timing chain tensioner wear on pre-2013 design or supercharger coupler wear — repairs require specialist intervention and deep pockets”

Who it's for: Buyers who can absorb five-figure repair bills.

Best Value

AJ20D6 3.0 D250 (2020–present)

“The entry-level six-cylinder diesel offers the refinement of the D300 with slightly lower output, making it the sweet spot for most UK buyers who want six-cylinder torque without the highest purchase price.”

Who it's for: Buyers who prioritise refinement and reliability over outright power.

Most Overlooked

PT204 2.0 P300 (2019–present)

“The four-cylinder petrol Ingenium is often dismissed in favour of the six-cylinder P400, but it delivers 300bhp from a 2.0-litre and avoids the diesel emissions complexity entirely”

Who it's for: Buyers who want petrol reliability without the V8's running costs.

Land Rover Defender L663 — Ownership Economics

EngineTypical MileageCommon Major FailureRepair Cost (Specialist)Replacement Cost (Recon)Ownership Verdict

204DT 2.0 D200/D24040k–80kTiming chain tensioner£800–£1,800£3,500–£5,800

Risk vs Reward — chain history essential

AJ20D6 3.0 D250/D30040k–80kTurbocharger wear, emissions system£1,200–£2,500£4,500–£7,500

Best Diesel — the L663's most dependable engine option

PT204 2.0 P30040k–80kCVVL system faults, cooling system£600–£1,500£3,000–£5,000

Solid Choice — simpler than diesels, fewer emissions components

PT306 3.0 P400 MHEV40k–80kBISG/accessory belt, cooling fan£800–£2,000£4,500–£7,500

Best Petrol — refined, powerful, well-supported

508PS 5.0 V830k–70kTiming chain tensioner, supercharger£2,500–£5,000£6,000–£12,000

Most Expensive — outstanding performance, outstanding running costs

EngineTypical MileageCommon Major FailureRepair Cost (Specialist)Replacement Cost (Recon)Ownership Verdict

204DT 2.0 D200/D24040k–80kTiming chain tensioner£800–£1,800£3,500–£5,800

Risk vs Reward — chain history essential

AJ20D6 3.0 D250/D30040k–80kTurbocharger wear, emissions system£1,200–£2,500£4,500–£7,500

Best Diesel — the L663's most dependable engine option

PT204 2.0 P30040k–80kCVVL system faults, cooling system£600–£1,500£3,000–£5,000

Solid Choice — simpler than diesels, fewer emissions components

PT306 3.0 P400 MHEV40k–80kBISG/accessory belt, cooling fan£800–£2,000£4,500–£7,500

Best Petrol — refined, powerful, well-supported

508PS 5.0 V830k–70kTiming chain tensioner, supercharger£2,500–£5,000£6,000–£12,000

Most Expensive — outstanding performance, outstanding running costs

The L663 rule

A £4,500–£7,500 D300 recon against a £40,000 L663 sits at 11–19% of the car's value — well within our 60% Land Rover threshold. Against a £70,000 example, the same recon drops to 6–11% — a routine maintenance decision, not a financial one. Value the car first, but on an L663, replacement almost always makes sense.

Key Takeaways

Which L663 Costs Least To Own?
2.0 P300 petrol — no DPF, no AdBlue, simpler emissions system.
Which L663 Costs Most To Own?
508PS 5.0 V8 — supercharger and timing chain repairs are specialist-only.
Which L663 Is Best Value?
3.0 D250 — six-cylinder refinement without the D300's purchase premium.

Common Problems

01

204DT

2.0 Ingenium Diesel Timing Chain Tensioner

Affected models:

L663 Defender D200, D240 (2019–present, pre-2020 units highest risk).

204DT 2.0 Ingenium Diesel Timing Chain Tensioner

Typical failure mileage:

40,000–80,000 miles.

Root cause:

The 2.0-litre Ingenium diesel's timing chain tensioner can fail prematurely, allowing chain slack that leads to rattling on cold start. If ignored, the chain can skip teeth or snap, causing catastrophic piston-to-valve contact.

Tiered Cost Table

Our Recommendation

At the first sign of cold-start rattle on a 2.0-litre diesel L663, get the timing system inspected immediately. An £800–£1,800 preventative repair is dramatically cheaper than the £3,500–£5,800 replacement that follows if ignored. On an L663, the vehicle value easily justifies the repair.

Compare 204DT engine prices for your Defender L663

02

AJ20D6

3.0 Diesel Turbocharger & Emissions System

Affected models:

L663 Defender D250, D300, D350 (2020–present).

AJ20D6 3.0 Diesel Turbocharger & Emissions System

Typical failure mileage:

40,000–80,000 miles.

Root cause:

The twin-turbo setup on the 3.0-litre diesel places considerable stress on both turbo units, with some owners reporting turbo failure as early as 33,000 miles. The complex emissions system — including DPF, EGR, and AdBlue — is also prone to clogging on vehicles used primarily for short journeys.

Tiered Cost Table

Our Recommendation

If your 3.0-litre diesel L663 is used primarily for short urban journeys, budget for regular DPF regeneration and consider an extended motorway run every few weeks. Watch for whistling noises under acceleration or reduced power — these are early turbo warning signs.

Compare AJ20D6 engine prices for your Defender L663

03

PT306

3.0 P400 MHEV Belt & Cooling System

Affected models:

L663 Defender P400 (2019–present).

PT306 3.0 P400 MHEV Belt & Cooling System

Typical failure mileage:

40,000–80,000 miles.

Root cause:

The Belt-Integrated Starter Generator (BISG) and accessory drive belt can fail, with JLR investigating reports of belt shredding and tensioner failure. The cooling fan may also fail intermittently, potentially causing engine overheating.

Tiered Cost Table

Our Recommendation

Have the BISG belt and cooling fan checked at every major service. Listen for unusual noises from the accessory drive and monitor the temperature gauge — if the fan fails, the engine can overheat quickly.

Compare PT306 engine prices for your Defender L663

L663 Engine Replacement Costs — By Engine and Condition

VariantEngine CodeUsed (Supply)Reconditioned (Supply)Rebuilt (Supply)Labour Hours

D200 / D240204DT£1,800–£3,200£3,500–£5,800£4,800–£7,00010–14 hrs

D250 / D300 / D350AJ20D6 / DT306£2,500–£4,500£4,500–£7,500£6,000–£9,50012–16 hrs

P300PT204 (AJ20P4)£1,500–£2,800£3,000–£5,000£4,200–£6,50010–14 hrs

P400ePT204 (PHEV)£2,000–£3,500£3,500–£5,800£4,800–£7,00012–16 hrs

P400PT306 (AJ20P6)£2,500–£4,500£4,500–£7,500£6,000–£9,50012–16 hrs

P425 / P500 / P525508PS (AJ133)£3,500–£6,000£6,000–£12,000£8,000–£14,00016–20 hrs

P635 OCTA4.4L Twin-Turbo V8£5,000–£8,000£9,000–£15,000£12,000–£18,00016–22 hrs

Core Variants

Diesel Variants

D200D240D250D250 2D300D350

Petrol Variants

P300P400P400eP425P500P525P635 OCTAP400eV8

Scope note: All variants listed are L663-generation Defender only (2019–present). Body styles (90, 110, 130) share these engines but are covered on their own body-style pages where fitment and labour access vary.

Core Variants

Diesel Variants

D200D240D250D250 2D300D350

Petrol Variants

P300P400P400eP425P500P525P635 OCTAP400eV8

Scope note: All variants listed are L663-generation Defender only (2019–present). Body styles (90, 110, 130) share these engines but are covered on their own body-style pages where fitment and labour access vary.

Market Intelligence

Most Requested E90 Engines (2025)

1.1. AJ20D6 3.0 D300
2.2. PT306 3.0 P400 MHEV
3.3. AJ20D6 3.0 D250

Most Requested E90 Variants

1.1. Defender 110 D300
2.2. Defender 110 P400
3.3. Defender 90 D250

Average E90 Replacement Cost

£3,500–£7,500 [EM-QUOTE]

Most Common E90 Failures

1.1. 204DT timing chain tensioner
2.2. AJ20D6 turbocharger wear
3.3. PT306 BISG/cooling fan failure

Live Feed

VehicleLocationIssueEnquiries

Land Rover Defender 110 (D300)

Birmingham

Turbo whistling noise

4

enquiries

Land Rover Defender 90 (P400)

London

Cooling fan failure

3

enquiries

Land Rover Defender 110 (D200)

Manchester

Cold-start rattle

2

enquiries

Updated Monthly

FAQ

BMW 3 Series E90 rear three-quarter view

Why UK Land Rover Defender L663 Owners Trust LandRoverEngine.uk

Trusted L663 Engine Suppliers
every garage and engine rebuilder in our network is vetted, rated and reviewed by real L663 owners, as part of the Engine Finders network.
Compare L663 Engine Replacement Companies
see prices, warranty terms and supply & fit options side-by-side before you commit.
UK Engine Replacement Services for L663
covering every variant from D200 to P635 OCTA, with supply-only or full supply & fit available nationwide.

Find the best Land Rover Defender L663 engine replacement UK drivers rely on. Compare real prices from trusted specialists on EnginesMarket today and get back on the road with confidence.

Compare Land Rover Defender L663 Engine Prices on EnginesMarket

Why UK Land Rover Defender L663 Owners Trust LandRoverEngine.uk

Trusted L663 Engine Suppliers
every garage and engine rebuilder in our network is vetted, rated and reviewed by real L663 owners, as part of the Engine Finders network.
Compare L663 Engine Replacement Companies
see prices, warranty terms and supply & fit options side-by-side before you commit.
UK Engine Replacement Services for L663
covering every variant from D200 to P635 OCTA, with supply-only or full supply & fit available nationwide.

Find the best Land Rover Defender L663 engine replacement UK drivers rely on. Compare real prices from trusted specialists on EnginesMarket today and get back on the road with confidence.

Compare Land Rover Defender L663 Engine Prices on EnginesMarket

Land Rover Defender L663 Engines — The Complete UK Guide

Land Rover Defender L663 Engine Codes — The Complete Database

Land Rover Defender L663 — Overview

Land Rover Defender L663 — Overview

Best & Worst Engines

Land Rover Defender L663 — Ownership Economics

Common Problems

L663 Engine Replacement Costs — By Engine and Condition

Core Variants

Core Variants

Market Intelligence

FAQ

Why UK Land Rover Defender L663 Owners Trust LandRoverEngine.uk

Why UK Land Rover Defender L663 Owners Trust LandRoverEngine.uk