Change Car Spark Plugs Land Rover Discovery

Change Car Spark Plugs

Easy 0h30–2h00 ~50–200£
Estimated time 0h30–2h00
Estimated labour cost ~50–200£
Difficulty Easy
Vehicles
Discovery I 1989-1999 3
  • 3.5 V8 Petrol (22D/36L/38L)
  • 3.5 V8i Petrol (24D)
  • 3.9 V8i Petrol (36D)
Discovery II 1999-2005 2
  • 4.0 V8 Petrol (10D/12D/94D)
  • 4.0 V8 Petrol (56D)
Discovery III 2005-2009 2
  • 4.0 V6 Petrol (406PN)
  • 4.4 V8 Petrol (448PN)
Discovery IV 2009-2018 2
  • 3.0 V6 S/C Petrol (306PS)
  • 5.0 V8 Petrol (508PN)
Discovery V 2017-2025 2
  • 2.0 Si4 Petrol (PT204)
  • 3.0 V6 SC Petrol (306PS)

What is the role of Land Rover Discovery spark plugs?

The spark plug generates a spark at the precise moment needed to ignite the air/fuel mixture in the combustion chamber of petrol (or LPG) engines. The engine management system controls ignition timing.

When should you change your Land Rover Discovery spark plugs?

Manufacturers provide replacement recommendations; refer to your vehicle maintenance booklet. Generally replace every 60,000 km (45,000 km for severe use). Some vehicles with long-life plugs (titanium, platinum, iridium) can go 100,000–150,000 km.

How do I know if I need to change my Land Rover Discovery spark plugs?

Via the EOBD system (mandatory since 2001 on petrol cars), faulty spark plugs will trigger fault codes, typically P0301–P0304 (misfire, cylinders 1–4). Symptoms include: difficulty starting, misfires, reduced engine power, increased fuel consumption.

Is it difficult to change Land Rover Discovery spark plugs?

Difficulty level 2/5: technically easy but requires specific tools (spark plug wrench, torque wrench). Key points: wait for cold engine, clean plug well with compressed air before removal, never use a dropped plug, do not grease threads, hand-tighten then torque to specification.

View all compatible products →
View your Discovery maintenance plan (keep the Discovery token) →

5 models covered

Model Year Range Engines covered Fuel
Discovery I 1989-1999 1989-1999 2.5 TDI 200 Diesel (21L/12L/17L), 2.5 TDI 300 Diesel (19L), 2.5 TDI 300 Diesel (19L), 3.5 V8 Petrol (22D/36L/38L), 3.5 V8i Petrol (24D), 3.9 V8i Petrol (36D) Diesel, Petrol
Discovery II 1999-2005 1999-2005 2.5 TD5 Diesel (10P), 2.5 TD5 Diesel (15P/16P), 4.0 V8 Petrol (10D/12D/94D), 4.0 V8 Petrol (56D) Diesel, Petrol
Discovery III 2005-2009 2005-2009 2.7 TDV6 Diesel (276DT), 4.0 V6 Petrol (406PN), 4.4 V8 Petrol (448PN) Diesel, Petrol
Discovery IV 2009-2018 2009-2018 2.7 TDV6 Diesel (276DT), 3.0 TDV6 Diesel (306DT), 3.0 TDV6 Diesel (306DT), 3.0 TDV6 Diesel (306DT), 3.0 V6 S/C Petrol (306PS), 5.0 V8 Petrol (508PN) Diesel, Petrol
Discovery V 2017-2025 2017-2025 2.0 Si4 Petrol (PT204), 2.0 TD4 Diesel (204DTA), 2.0 TD4 Diesel (204DTD), 3.0 TDV6 Diesel (306DT), 3.0 V6 SC Petrol (306PS), D250 (3.0 MHEV) 48V (MHEV),Diesel (DT306) 48V (MHEV), Diesel, Petrol

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View the service schedule for your Discovery →