Land Rover Discovery 5 L462SUV2016–present

Land Rover Discovery 5 L462 Engines — The Complete UK Guide

Every engine fitted to the Discovery 5 L462 — from the Ingenium 2.0-litre diesel four to the 3.0-litre supercharged V6 and the limited-run 5.0-litre SVX V8. Real UK costs, honest failure data, and the Ingenium timing-chain question that defines this generation's ownership experience. Backed by 292+ real UK Discovery 5 enquiries in 2025 [EM-VERIFIED].

Explore L462 Engines
292+L462 Enquiries (2025)EM-VERIFIED
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Land Rover Discovery 5 L462 Engine Codes — The Complete Database

Every engine fitted to the Discovery 5 specifically — from launch in 2016 through the 2020 facelift and current mild-hybrid models.

Engine CodeFuelPowerYearsReliabilityEnquiriesAvg. Recon Cost
204DTDIngenium I4Diesel180 bhp2016–present★★★☆☆ [PROVISIONAL — pending dedicated Engine Page]1,150 JLR-wide [EM-VERIFIED]£3,500–£5,800
204DTAIngenium I4Diesel241 bhp2016–present★★★☆☆ [PROVISIONAL — pending dedicated Engine Page]1,150 JLR-wide [EM-VERIFIED]£3,500–£5,800
306DTAJD V6Diesel211–306 bhp2016–present★★★☆☆ [PROVISIONAL — pending dedicated Engine Page]980 JLR-wide [EM-VERIFIED]£6,500–£9,500
PT204Ingenium I4Petrol300 bhp2017–present★★★★☆ [PROVISIONAL — pending dedicated Engine Page]480 JLR-wide [EM-VERIFIED]£3,000–£5,000
AJ126AJ126 V6Petrol, supercharged340 bhp2016–2020★★★★☆ [PROVISIONAL — pending dedicated Engine Page]560 JLR-wide [EM-VERIFIED]£4,500–£7,500
AJ133AJ133 V8Petrol, supercharged525–557 bhpLimited (SVX)★★★★☆ [PROVISIONAL — pending dedicated Engine Page]330 JLR-wide [EM-VERIFIED]£5,500–£9,000
PT306 (AJ20P6)Ingenium I6Petrol MHEV360 bhp2020–present★★★★☆ [PROVISIONAL — pending dedicated Engine Page]— (pattern data)£4,500–£7,500
306PSIngenium I6Petrol MHEV400 bhp2020–present★★★★☆ [PROVISIONAL — pending dedicated Engine Page]80 JLR-wide [EM-VERIFIED]£4,500–£7,500
BMW 3 Series E90

Overview

Land Rover Discovery 5 L462 — Overview

The Discovery 5 L462 is the fifth generation of Land Rover's family SUV, launched in December 2016.

It abandoned the body-on-frame construction of the Discovery 3 and 4 for an aluminium unitary platform shared with the Range Rover L405 and Range Rover Sport L494, delivering a significantly lighter, more road-focused vehicle while retaining genuine off-road capability. The engine line-up spans 2.0-litre Ingenium four-cylinder diesels, a 3.0-litre V6 diesel, 2.0-litre and 3.0-litre petrol options, and a limited-run 5.0-litre supercharged V8 in the SVX. A 2020 facelift introduced mild-hybrid six-cylinder petrol engines (P360, P400).

Key Facts

Platform

Aluminium D7u (shared with Range Rover L405, Range Rover Sport L494)

Predecessor

Discovery 4 (L319)

Successor

Current model — on sale

Sibling body styles

None — L462 is sole Discovery 5 body style

Market Intelligence

The Discovery 5 L462 generated real UK engine enquiries in 2025, with the Ingenium 2.0-litre diesel (204DTD/204DTA) accounting for the largest share of the 1,150 JLR-wide figure, followed by the 3.0-litre V6 diesel (<a href='https://landroverengine.uk/engine/306dt'>306DT</a>) at 980 enquiries.

Best & Worst Engines

204DTA 2.0-litre Ingenium SD4 (241 bhp) — The higher-output Ingenium diesel delivers 241 bhp and 500 Nm of torque, making the L462 genuinely brisk despite its 2.2-tonne kerb weight. Later (post-2019) units benefit from revised timing-chain tensioners that address the pre-2019 failure risk. engine

Best Diesel Overall

204DTA 2.0-litre Ingenium SD4 (241 bhp) — The higher-output Ingenium diesel delivers 241 bhp and 500 Nm of torque, making the L462 genuinely brisk despite its 2.2-tonne kerb weight. Later (post-2019) units benefit from revised timing-chain tensioners that address the pre-2019 failure risk.

Who it's for: buyers who want diesel economy without the V6's fuel consumption.

PT204 2.0-litre Ingenium P300 — The 300 bhp four-cylinder petrol is the most reliable petrol in the L462 line-up. No turbocharger complexity beyond a single unit, no supercharger cooling system to manage, and a simpler overall architecture than the V6 and V8 options. engine

Best Petrol Overall

PT204 2.0-litre Ingenium P300 — The 300 bhp four-cylinder petrol is the most reliable petrol in the L462 line-up. No turbocharger complexity beyond a single unit, no supercharger cooling system to manage, and a simpler overall architecture than the V6 and V8 options.

Who it's for: buyers who want petrol reliability without the V6's fuel consumption.

306DT 3.0-litre V6 Diesel — The AJD V6 diesel suffers from crankshaft bearing failure (tin-aluminium coating fatigue) at 80,000–140,000 miles, often preceded by cold-start knock. A bottom-end rebuild costs £5,500–£7,000; a full reconditioned replacement runs £6,500–£9,500. engine

Highest Risk

306DT 3.0-litre V6 Diesel — The AJD V6 diesel suffers from crankshaft bearing failure (tin-aluminium coating fatigue) at 80,000–140,000 miles, often preceded by cold-start knock. A bottom-end rebuild costs £5,500–£7,000; a full reconditioned replacement runs £6,500–£9,500.

Who it's for: only buyers with full service history and a warranty.

<a href='https://landroverengine.uk/engine/aj133'>AJ133</a> 5.0-litre Supercharged V8 (SVX) — The limited-run SVX V8 is the most expensive engine in the L462 line-up to replace, with reconditioned units costing £5,500–£9,000 supply-only. Timing-chain guide wear is the primary risk, similar to other Jaguar-Land Rover V8s. engine

Most Expensive Failure

AJ133 5.0-litre Supercharged V8 (SVX) — The limited-run SVX V8 is the most expensive engine in the L462 line-up to replace, with reconditioned units costing £5,500–£9,000 supply-only. Timing-chain guide wear is the primary risk, similar to other Jaguar-Land Rover V8s.

Who it's for: collectors and enthusiasts who accept the premium.

204DTA 2.0-litre Ingenium SD4 — The 241 bhp diesel four offers the best balance of performance, economy, and running costs. Post-2019 units are significantly more reliable than the V6 diesel, and the recon cost is substantially lower than the 306DT. engine

Best Value

204DTA 2.0-litre Ingenium SD4 — The 241 bhp diesel four offers the best balance of performance, economy, and running costs. Post-2019 units are significantly more reliable than the V6 diesel, and the recon cost is substantially lower than the 306DT.

Who it's for: the majority of Discovery 5 buyers.

PT306 (AJ20P6) 3.0-litre P360 MHEV — The mild-hybrid six-cylinder petrol, introduced with the 2020 facelift, delivers 360 bhp with significantly better fuel economy than the supercharged AJ126 it replaced. Too new for major failure patterns to have emerged. engine

Most Overlooked

PT306 (AJ20P6) 3.0-litre P360 MHEV — The mild-hybrid six-cylinder petrol, introduced with the 2020 facelift, delivers 360 bhp with significantly better fuel economy than the supercharged AJ126 it replaced. Too new for major failure patterns to have emerged.

Who it's for: buyers who want six-cylinder petrol refinement without the AJ126's cooling-system concerns.

Land Rover Discovery 5 L462 — Ownership Economics

EngineTypical MileageCommon Major FailureRepair Cost (Specialist)Replacement Cost (Recon)Ownership Verdict
204DTD/204DTA60k–120kTiming chain tensioner£1,200–£2,500£3,500–£5,800
Risk vs Reward — pre-2019 units: budget for chain work
306DT80k–140kCrankshaft bearing failure£5,500–£7,000£6,500–£9,500
Most Expensive — catastrophic if ignored
PT20460k–120kWater pump£400–£800£3,000–£5,000
Best Petrol — reliable, simple
AJ12660k–120kWater pump, coolant leaks£600–£1,200£4,500–£7,500
Solid Choice — cooling system is the watch-item
AJ13360k–120kTiming chain guide wear£2,500–£4,500£5,500–£9,000
Collector's Premium — SVX only
PT306/306PS— (too new)Cooling system (emerging)£300–£600£4,500–£7,500
Too Early — no major pattern yet

The L462 rule

A £6,500–£9,500 306DT recon against a £10,000–£14,000 early Discovery 5 sits at 46–95% of the car's value. On a sub-£12,000 L462, that brushes our 60% Land Rover threshold — we'll honestly tell you to walk away. Against a well-kept £18,000+ example, the same recon drops to a routine 36–53% — a repair decision, not a financial one. Value the car first.

Key Takeaways

  • Which L462 Costs Least To Own?

    PT204 2.0-litre petrol — cheapest recon, simplest architecture.

  • Which L462 Costs Most To Own?

    306DT V6 diesel — crankshaft bearing failure is catastrophic and expensive.

  • Which L462 Is Best Value?

    204DTA 2.0-litre SD4 diesel — best balance of performance, economy, and running costs.

Common Problems

L462 Engine Replacement Costs — By Engine and Condition

Core Variants

Core Variants

Diesel Variants

D200D250D300SD4SD6TD4TD6

Petrol Variants

P300P360P400Si6SVXP300P360

Scope note: All variants listed are L462 Discovery 5 only. Engine fitment varies by year — the 2020 facelift introduced P360 and P400 mild-hybrid six-cylinder petrol units (PT306/306PS), while the SVX (AJ133 V8) was a limited-run model.

Market Intelligence

Most Requested E90 Engines (2025)

  1. 1.1. 204DTD/204DTA 2.0 Ingenium Diesel (1,150 JLR-wide enquiries)
  2. 2.2. 306DT 3.0 V6 Diesel (980)
  3. 3.3. AJ126 3.0 V6 Supercharged Petrol (560)

Most Requested E90 Variants

  1. 1.1. TD4 (2.0 diesel)
  2. 2.2. SD4 (2.0 high-output diesel)
  3. 3.3. TD6 (3.0 V6 diesel)

Average E90 Replacement Cost

£1,500–£9,500 supply-only [EM-QUOTE]

Most Common E90 Failures

  1. 1.1. Ingenium 2.0 diesel timing chain tensioner
  2. 2.2. 306DT V6 diesel crankshaft bearing failure
  3. 3.3. AJ126 V6 petrol cooling system leaks
Live Feed
VehicleLocationIssueEnquiries
Land Rover Discovery 5 TD4 (204DTD)

Land Rover Discovery 5 TD4 (204DTD)

Birmingham
Cold-start timing chain rattle

5

enquiries

Land Rover Discovery 5 TD6 (306DT)

Land Rover Discovery 5 TD6 (306DT)

Manchester
Crankshaft knock on startup

3

enquiries

Land Rover Discovery 5 Si6 (AJ126)

Land Rover Discovery 5 Si6 (AJ126)

London
Coolant loss, overheating

2

enquiries

Updated Monthly

FAQ

BMW 3 Series E90 rear three-quarter view

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