By Kylie White 
Finding a genuine Discovery 5 engine supplier with warranty included is the single most important step in a successful engine replacement, since a warranty is what protects you if a fault develops shortly after fitting. The Land Rover Discovery 5 engine range spans diesel four- and six-cylinder Ingenium units through to supercharged and mild-hybrid petrol options, and not every supplier backs every variant with the same level of cover. At Engine Solutions in Grays, UK, we supply and fit every Land Rover engine variant fitted to the Discovery 5 with a genuine written warranty as standard, and this guide covers what to look for, engine codes, specifications, and common faults, all backed by no upfront charges and no deposit required.
Discovery 5 Engine Supplier With Warranty: The Overview
A genuine Discovery 5 engine supplier with warranty will ask for your registration and exact engine code before quoting, confirm the unit has been fully rebuilt or verified, and put the warranty terms in writing before any payment changes hands. Avoid suppliers who are vague about warranty length or who cannot confirm what the warranty actually covers, such as labour costs if the unit fails. A specialist offering complete supply and fit services alongside a proper warranty removes the risk of a compatibility mismatch and gives you a single point of contact if anything goes wrong after fitting.
Land Rover Discovery 5 Engine Codes You Need to Know
Early Discovery 5 models from 2017 used the 3.0-litre TD6 diesel V6, engine code 306DT, and the 2.0-litre SD4 diesel, engine code 204DTD, alongside the 3.0-litre supercharged Si6 petrol V6. Following the 2020 facelift, the range moved to the 2.0-litre Ingenium diesel, engine code 204DTD, badged D200 and D250, and the 3.0-litre Ingenium mild-hybrid diesel, engine code 306DT, badged D300 and D350. Petrol buyers can also find the 3.0-litre mild-hybrid Ingenium six, badged P360 and P400, and the 2.0-litre Ingenium petrol four, badged P300. Always confirm your exact engine code before ordering a Reconditioned Engines for sale listing.
What a Genuine Warranty Should Actually Include
Before you buy from any supplier, ask exactly what the warranty covers beyond just the block and internals, including ancillary parts such as the turbo, injectors, or timing chain if they were replaced during the rebuild. Confirm whether labour costs are covered if the engine needs to be removed again under warranty, since parts-only cover can leave you with a large bill regardless. A reputable supplier will put all of this in writing before you commit, typically offering twelve months as standard on a genuine reconditioned engine, with some extending cover further on request. Understanding reconditioned engines vs used engines at this stage matters too, since a used unit rarely comes with anything close to the same level of warranted protection.
Diesel Engine Options for the Discovery 5
The diesel range covers the 3.0-litre TD6 V6, the 2.0-litre SD4 and later D200/D250 four-cylinder units, and the 3.0-litre mild-hybrid D300 and D350 six-cylinder engines. All use common rail direct injection, with the six-cylinder units producing stronger torque suited to towing, while the four-cylinder units offer better efficiency for everyday driving. Diesel remains the most popular choice among Discovery 5 owners covering higher annual mileage, and a warrantied reconditioned JLR engine in either configuration gives confidence that the rebuild has addressed known wear points before the unit is fitted. Whichever diesel option you drive, always confirm the exact output badge and engine code before requesting a quote for engine replacement.
Petrol Engine Options for the Discovery 5
Petrol power spans the early supercharged 3.0-litre Si6 V6, producing 335 bhp, through to the newer mild-hybrid Ingenium six-cylinder P360 and P400, and the smaller 2.0-litre P300 four-cylinder. These units suit owners covering lower annual mileage or prioritising refinement over outright efficiency. A Land Rover engine for sale in petrol form should still come with the same warranty standards as diesel, covering both the core unit and any ancillary parts replaced during the rebuild process before you commit to any engine rebuild or full replacement. Petrol buyers should never assume warranty terms are identical across suppliers without confirming them directly in writing beforehand.
Common Discovery 5 Engine Problems and Solutions
The 204DTD diesel is known for rear-mounted timing chain wear and EGR valve clogging, both of which cause rough running and are best addressed early. The 306DT diesel V6 and six-cylinder units can develop injector seal leaks and turbo actuator wear on higher-mileage examples. The supercharged Si6 petrol can suffer from timing chain guide wear, while later mild-hybrid petrol units require occasional battery health checks. A warrantied supplier will have already addressed these known weak points during the rebuild, reducing your risk considerably compared with an unverified used unit of uncertain history.
Land Rover Discovery 5 Engine Specifications
The 204DTD diesel uses common rail direct injection with single-turbo configurations, producing between 178 and 246 bhp depending on generation and output badge. The 306DT diesel V6 and six-cylinder units use twin-turbo or single-turbo setups with 48-volt mild-hybrid assistance on later models, producing 254 to 350 bhp. The supercharged Si6 petrol uses a Roots-type supercharger producing 335 bhp, while the newer P360 and P400 mild-hybrid petrol units use twin-scroll turbocharging alongside electrical assistance for a strong balance of power and efficiency. All variants use an aluminium block construction to help manage overall vehicle weight.
Our Supply and Fit Services at Engine Solutions
Engine Solutions provides complete supply and fit services for every Discovery 5 engine variant, diesel or petrol, always backed by a genuine written warranty agreed before work begins. Our process starts with a free quote based on your registration and exact engine code, followed by sourcing the correctly matched reconditioned or verified used unit from our network. Our technicians carry out the full engine rebuild or replacement, including ancillary transfer, fluids, and a thorough road test. We operate with no upfront charges and no deposit required, so you only pay once fully satisfied.
Table of Land Rover Discovery 5 Engine Models in Detail
The table below gives a detailed breakdown of every Discovery 5 engine to help you shop for the correct replacement with warranty included.
| Output Badge | Years | Engine Code | Fuel Type | Turbo Type | Power Output | Torque | Common Fault | Recon Supply & Fit |
| TD6 | 2017–2020 | 306DT | Diesel | Twin turbo | 254–258 bhp | 600 Nm | Injector seal leaks | £3,600–£5,200 |
| SD4 (200/240) | 2017–2020 | 204DTD | Diesel | Single turbo | 178–241 bhp | 430–500 Nm | Rear timing chain wear | £3,000–£4,500 |
| Si6 (Supercharged) | 2017–2020 | 306PS | Petrol | Supercharged | 335 bhp | 450 Nm | Timing chain guide wear | £4,200–£6,000 |
| D200/D250 | 2020–present | 204DTD | Diesel | Single turbo | 197–246 bhp | 430–570 Nm | EGR valve clogging | £3,300–£4,800 |
| D300/D350 (MHEV) | 2020–present | 306DT | Diesel | Single turbo + 48V | 296–345 bhp | 650–700 Nm | Mild-hybrid battery checks | £4,000–£5,700 |
| P300 | 2021–present | 204PT | Petrol | Twin-scroll turbo | 296–300 bhp | 400 Nm | Carbon build-up on valves | £3,400–£4,900 |
| P360/P400 (MHEV) | 2020–present | 306PT | Petrol | Twin-scroll turbo + 48V | 355–400 bhp | 500 Nm | Coil pack, mild-hybrid checks | £4,300–£6,100 |
Figures are supply-and-fit estimates for a genuine, warrantied unit and will vary based on ancillary condition, labour rates, and warranty length on the day.
Nationwide Logistics: Why Choose Engine Solutions in Grays
Based in Grays, UK, Engine Solutions runs a dedicated logistics operation to move any Discovery 5 engine safely and quickly across the country, diesel or petrol. Every unit is securely palletised and tracked from our warehouse to your chosen garage or address, with most UK mainland deliveries arriving within one to three working days. We also offer engine collection for core exchange returns, reducing costs further for customers upgrading their unit. Local customers across Essex and London benefit from direct collection and delivery using our own transport, keeping engine replacement costs in UK predictable and transparent.
Frequently Asked Questions
1. Who supplies Discovery 5 engines with a genuine warranty?
A specialist that rebuilds in-house and confirms warranty terms in writing before payment is the safest supplier to choose.
2. Does the warranty cover both diesel and petrol Discovery 5 engines?
Yes, Engine Solutions backs every diesel and petrol variant with the same written warranty standard.
3. What should a Discovery 5 engine warranty include?
It should cover the core unit and any ancillary parts replaced, plus labour if a fault develops.
4. Do I need to pay a deposit for engine replacement?
No, Engine Solutions operates with no upfront charges and no deposit required on any job.
5. Do you deliver Discovery 5 engines across the UK?
Yes, we deliver nationwide from our Grays base, with most orders arriving within one to three working days.