Mini Clubman Spark Plugs: Intervals, Fitment & Warning Signs
A genuinely useful piece of context: a persistent misfire on related models is often traced to corrosion on one specific coil connector terminal, not a faulty coil pack — plus a warning about iridium plugs being too hard for the factory coils.
Illustration for editorial purposes
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OEM Part Number: confirm via engine code — aftermarket NGK 95248 / Bosch 0 242 145 555
| Petrol engines in this generation | One 102 HP; Cooper 136 HP (also ALL4); Cooper S 163/178/192 HP (also ALL4); Cooper S JCW 211 HP; John Cooper Works 231/272/306 HP |
|---|---|
| Spark plugs (aftermarket) | NGK 95248 (iridium, M12x1.25, 14 mm hex); NGK 94201 (iridium, M12x1.25, 14 mm hex); NGK 91469 (iridium, gap 0.75 mm, M12x1.25, 14 mm hex); Bosch 0 242 145 555 (gap 0.8 mm, M12x1.25, 14 mm hex); Denso VXUH22I (iridium centre, platinum earth, M12x1.25); Champion OE245 (iridium, gap 0.8 mm, M12x1.25, 14 mm Bi-Hex); Beru Z366 (iridium centre, platinum earth, gap 0.8 mm, M12x1.25, 14 mm Bi-Hex) |
| Genuine (OE) numbers quoted | Denso VXUH22I is quoted against A0041592503 |
| Fitment notes | All the main references are iridium M12x1.25 / 14 mm plugs with a gap of about 0.75-0.8 mm; platinum Champion OE205 and CET16P also appear for the lower-output petrols. |
Mini Clubman Spark Plugs: A Cheap Part That Causes Expensive-Feeling Problems
A worn set of spark plugs in the Mini Clubman 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.
Mini Clubman Spark Plugs: What They Do
Every combustion cycle in the Mini Clubman'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.
Mini Clubman Spark Plugs: Generations, Engines & Spark Plug Count
| R-series (pre-2014), Cooper (base) | 4 spark plugs — older Mini generations used a conventional four-cylinder engine across the standard Cooper range |
|---|---|
| F-series (2014–present), Cooper (base, B38 engine) | Genuinely only 3 spark plugs — the current-generation base Cooper switched to a BMW-sourced three-cylinder turbo engine, a real change from the previous generation's four-cylinder unit |
| Cooper S/JCW (all generations, B48 or equivalent) | 4 spark plugs — the S and JCW performance derivatives have always used a four-cylinder engine, genuinely different from the base Cooper's 3-cylinder unit on current-generation cars |
Mini Clubman Spark Plugs: Watch: Replacing It
Names the F54 Clubman.
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A Genuinely Useful Piece of Context Worth Knowing About Persistent Misfires — Mini Clubman Spark Plugs
If you're facing a persistent misfire and assuming the coil pack itself must be at fault, this is genuinely worth knowing: documented cases on related models trace this to corrosion on one of the coil connector's individual terminals, often terminal 3, resolved by simple sanding rather than replacing the coil pack.
It's also genuinely worth knowing an honest account: experienced mechanics report seeing many cars with this same engine where owners had already replaced coil packs, plugs, injectors, and cam sensors — and still had an unresolved misfire, worth getting a proper diagnosis before replacing parts on a guess.
Mini Clubman 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 Mini Spark Plugs
The same part, covered across other Mini models.