What are the signs of timing chain failure in a Land Rover Discovery SD4-

The most common early warning sign is a distinct rattling or ticking noise from the engine bay, particularly during cold starts.

Land Rover Discovery SD4 SPECIALISTS

Land Rover Discovery SD4 Engine Replacement Compare Prices & Get Quotes

Get quotes today from trusted UK Land Rover Discovery SD4 engine specialists. Compare prices on reconditioned, rebuilt and used 204DTA engines to find the best supply and fit solution.

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Land Rover Discovery SD4 Engine

from£4,800 to £7,000...

Usedfrom £2,000
Reconditionedfrom £3,500
Common codes204DTA

Land Rover discovery SD4 Used Engine — 204DTA

Land Rover discoveryUsed Engine — 204DTA

Land Rover discovery SD4 Reconditioned Engine — 204DTA

Land Rover discoveryReconditioned Engine — 204DTA

Land Rover discovery SD4 Rebuilt Engine — 204DTA

Land Rover discoveryRebuilt Engine — 204DTA

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How it works

3 Simple Steps to Finding the Right Replacement Engine

Clear information first, then the right engine and specialist for your exact vehicle.

Variant History

Land Rover Discovery SD4 Engine History & Specs at a Glance

When the SD4 variant launched in the L462 Discovery, it introduced a highly efficient 2.0-litre twin-turbo Ingenium diesel engine, offering a compelling balance of torque, fuel economy, and reduced emissions compared to the larger V6 options.

2017
204DTA (2.0L Twin-Turbo Diesel), 240hp, introduced to the Discovery 5 (L462) lineup as the SD4 trim, featuring an 8-speed ZF automatic transmission and permanent 4WD.
2021
Continued with minor emissions and software calibrations until the variant was gradually phased out in favour of the D250/D300 mild-hybrid Ingenium units.

Every engine fitted to the Land Rover Discovery SD4 is covered below, with UK rebuilt pricing and known failure points.

Engine Codes & Pricing

Land Rover Discovery SD4 Engine Codes Specifications & Replacement Cost

Find your exact engine code, specs and UK replacement cost guide.

204DTA — 2.0L Diesel (2017-2021)

Power Output: 240hp
Years Fitted: 2017-2021

Can’t find your exact engine code?-> Get quotes for 204DTA Land Rover Discovery SD4 engine replacement

-> Get quotes for 204DTA Land Rover Discovery SD4 engine replacement

Common failure points and repair options

Timing Chain Tensioner Wear

Affected: Land Rover Discovery SD4 (204DTA, 2017-2021)
Typical failure mileage: 60,000-120,000 miles

Root cause

Early production tensioners can wear prematurely, leading to chain stretch, rattling on cold starts, and potential catastrophic engine failure if ignored.

Repair options

Repair tier	Dealer price	Specialist price
Minor/Preventative (Chain Kit Replacement)	£2,500-£4,000	£1,200-£2,500
Full Replacement - rebuilt/reconditioned engine	£7,500-£11,000	£4,800-£7,000 [ESTIMATED - using 204DTD Ingenium as proxy]

Our recommendation

For the Land Rover Discovery SD4, strict adherence to shortened oil change intervals (every 6,000-8,000 miles) is the best preventative measure against oil dilution. However, if you are experiencing timing chain rattle or have suffered catastrophic internal failure, a reconditioned 204DTA engine with upgraded tensioners is the safest long-term solution to preserve performance and value.

Oil Dilution from DPF Regeneration

Affected: Land Rover Discovery SD4 (204DTA, 2017-2021)
Typical failure mileage: 40,000-100,000 miles

Root cause

Frequent short journeys prevent complete DPF regeneration cycles, causing unburnt diesel to wash down cylinder walls and dilute the engine oil, accelerating bearing wear.

Repair options

Repair tier	Dealer price	Specialist price
Minor/Preventative (Oil Service + Software Update)	£400-£700	£250-£450
Full Replacement - rebuilt/reconditioned engine	£7,500-£11,000	£4,800-£7,000 [ESTIMATED - using 204DTD Ingenium as proxy]

Our recommendation

-> Compare rebuilt 204DTA Land Rover Discovery SD4 engine prices

Don't Let Engine Failure Write Off Your Land Rover Discovery SD4

Protect your premium investment by comparing quotes from vetted UK specialists. Every engine supplied through our network features upgraded components to prevent known Ingenium failures, backed by a minimum 12-month unlimited mileage warranty and nationwide delivery options. Avoid main dealer premiums without sacrificing the refinement your Discovery deserves.

Compare Land Rover Discovery SD4 Engine Replacement Prices Now ->

FAQ

Land Rover Discovery SD4 Engine ReplacementFrequently Asked Questions

Everything Land Rover Discovery SD4 owners usually ask before choosing a rebuilt, reconditioned or used replacement engine.

A reconditioned Land Rover Discovery SD4 (204DTA) engine typically costs between £3,500 and £5,800 for supply only, with fully rebuilt options ranging from £4,800 to £7,000.

Prices vary based on the supplier and whether you choose supply-only or supply-and-fit.
Used engines are cheaper (£2,000-£3,500) but carry higher risk without a comprehensive warranty.

-> Compare Land Rover Discovery SD4 engine prices today.

Yes, given the strong retained value of the L462 Discovery SD4 (typically £18,000-£35,000), a rebuild is highly financially viable.

A reconditioned 204DTA engine with a 12-month warranty restores peak performance and protects your asset's premium value.
Replacement cost is a small fraction of the vehicle's overall market value.

-> Check if your Land Rover Discovery SD4 is a candidate for replacement.

A professional supply and fit service for the Land Rover Discovery SD4 typically takes 2 to 4 days due to the complexity of the L462 chassis and twin-turbo Ingenium architecture.

This includes careful removal, thorough engine bay cleaning, and precise installation of the replacement 204DTA unit.
Comprehensive post-fit testing and ECU calibration are completed before handover.

-> Book a Land Rover Discovery SD4 supply and fit appointment.

Yes, the most effective preventative measure is adhering to shortened oil and filter change intervals, ideally every 6,000 to 8,000 miles, especially for vehicles used primarily for short, urban journeys.

Ensuring the vehicle completes full DPF regeneration cycles by occasionally driving at sustained motorway speeds also helps.
Many specialists also recommend applying the latest ECU software updates to optimise regeneration behaviour.

-> Speak to a Land Rover Discovery SD4 specialist about preventative maintenance.

Why Choose Us

Compare Land Rover Discovery SD4 Engine Prices Today

Comparing quotes is completely free and carries no obligation. By entering your registration, you ensure that the quotes you receive are specifically tailored to your exact Land Rover Discovery SD4 and its 204DTA engine code, connecting you directly with vetted UK specialists who understand high-specification L462 Discovery intricacies.

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