Promo banner

Change Car Spark Plugs

Easy 0h30–0h45 ~50–75£
Estimated time 0h30–0h45
Estimated labour cost ~50–75£
Difficulty Easy
Vehicles
Cabrio 2004-2009 4
  • Cooper Petrol (W10B16A)
  • Cooper S Petrol (W11B16A)
  • John Cooper Works Petrol (W11B16A)
  • One Petrol (W10B16A)
Cabrio 2009-2015 8
  • Cooper Petrol (N12B16A)
  • Cooper Petrol (N16B16A)
  • Cooper S Petrol (N14B16A)
  • Cooper S Petrol (N18B16A)
  • Cooper S Petrol (N18B16A)
  • John Cooper Works Petrol (N14B16C)
  • John Cooper Works Petrol (N18B16C)
  • One Petrol (N16B16A)
Cabrio 2015-2024 6
  • Cooper Petrol (B38A15A)
  • Cooper S JCW tuning kit Petrol (B48A20A)
  • Cooper S Petrol (B48A20A)
  • Cooper S Petrol (B48A20F)
  • John Cooper Work Petrol (B48A20B)
  • One Petrol (B38A15A)

What is the role of Mini Cabrio 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 Mini Cabrio 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 Mini Cabrio 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 Mini Cabrio 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.

3 models covered

Model Year Range Engines covered Fuel
Cabrio 2004-2009 2004-2009 Cooper Petrol (W10B16A), Cooper S Petrol (W11B16A), John Cooper Works Petrol (W11B16A), One Petrol (W10B16A) Petrol
Cabrio 2009-2015 2009-2015 Cooper D Diesel (N47C16A), Cooper D Diesel (N47C20A), Cooper Petrol (N12B16A), Cooper Petrol (N16B16A), Cooper S Petrol (N14B16A), Cooper S Petrol (N18B16A), Cooper S Petrol (N18B16A), Cooper SD Diesel (N47C20A), John Cooper Works Petrol (N14B16C), John Cooper Works Petrol (N18B… Diesel, Petrol
Cabrio 2015-2024 2015-2024 Cooper D Diesel (B37C15A), Cooper Petrol (B38A15A), Cooper S JCW tuning kit Petrol (B48A20A), Cooper S Petrol (B48A20A), Cooper S Petrol (B48A20F), Cooper SD Diesel (B47C20A), John Cooper Work Petrol (B48A20B), One Petrol (B38A12A), One Petrol (B38A15A) Diesel, Petrol