Land Rover Discovery Sport Spark Plugs: Intervals, Fitment & Warning Signs
On the Discovery Sport, related Land Rover engines genuinely use a wasted spark system, where each coil fires two specific cylinders together.
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Land Rover Discovery Sport Spark Plugs: OEM Part Number
Land Rover Discovery Sport Spark Plugs: A Cheap Part That Causes Expensive-Feeling Problems
A worn set of spark plugs in the Land Rover Discovery Sport doesn't make itself obvious: idle roughens slightly, acceleration loses a bit of urgency, and both symptoms are easy to blame on something else entirely. Given how inexpensive the part is, it often gets neglected for far longer than it should.
Land Rover Discovery Sport Spark Plugs: What They Do
Every combustion cycle in the Land Rover Discovery Sport's petrol engine starts with a spark plug igniting the compressed fuel-air mixture, and their condition shapes efficiency, economy and smoothness directly. Diesel versions don't need them at all, relying purely on compression to ignite fuel.
Land Rover Discovery Sport Spark Plugs: Generations, Engines & Spark Plug Count
| Diesel variants (eD4, SD4, D165, D180 and similar) | Not applicable — diesel engines use compression ignition and have no spark plugs at all |
|---|---|
| Petrol variants (all Si4 Ingenium derivatives) | 4 spark plugs — one per cylinder, as this model has been offered exclusively with four-cylinder petrol engines |
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A Genuinely Useful Piece of Context Worth Knowing About Misfires — Land Rover Discovery Sport Spark Plugs
If you're facing a misfire, this is genuinely worth knowing: related Land Rover engines have used a wasted spark ignition system, where each coil fires two specific cylinders together, meaning a genuine coil failure should typically produce a misfire matching a specific pair rather than a single, isolated cylinder.
It's also genuinely worth knowing that the official service interval for platinum spark plugs has been described by experienced mechanics as genuinely too long in practice on related models, with a widened gap at high mileage potentially burning out leads and coils.
Land Rover Discovery Sport Spark Plugs: Warning Signs, DIY Difficulty & Aftermarket Advice
These are the same regardless of make or model — see our full Spark Plugs Guide for symptoms of worn plugs, why matching your exact plug specification matters, and trusted brands to buy from.
More Land Rover Spark Plugs
The same part, covered across other Land Rover models.