Changing the spark plugs on your 2017 MINI Cooper Countryman is an essential maintenance task that helps keep your engine running smoothly and efficiently. Properly functioning spark plugs ensure optimal combustion, improving fuel economy and performance.

When to Change Your Spark Plugs

MINI recommends replacing the spark plugs approximately every 60,000 miles, but it's a good idea to check them sooner if you notice issues such as rough idling, reduced acceleration, or poor fuel economy.

Tools and Materials Needed

  • Spark plug socket (usually 5/8-inch or 16mm)
  • Ratchet wrench
  • Torque wrench
  • Extension bar
  • New spark plugs (refer to your owner’s manual for the correct type)
  • Dielectric grease
  • Anti-seize compound (optional, check manufacturer recommendations)

Step-by-Step Guide to Changing Spark Plugs

  1. Allow the engine to cool completely to avoid burns.
  2. Open the hood and locate the ignition coils on top of the engine.
  3. Remove the electrical connectors from each ignition coil carefully.
  4. Unscrew and remove the ignition coils to expose the spark plugs.
  5. Use the spark plug socket and ratchet to remove the old spark plugs.
  6. Check the gap on the new spark plugs to ensure they match manufacturer specifications.
  7. Apply a small amount of dielectric grease to the inside of the ignition coil boots.
  8. Install the new spark plugs by hand to avoid cross-threading, then tighten them with a torque wrench to the specified torque.
  9. Reinstall the ignition coils and reconnect the electrical connectors.
  10. Close the hood and start the engine to check for smooth operation.

Regularly changing your MINI Cooper Countryman’s spark plugs can extend engine life and maintain peak performance. If you’re unsure or uncomfortable performing this service yourself, consult a professional mechanic.