Step 1: Remove the Cowling.
Step 2: Assemble the Spark Plug Spanner!
Step 3: Remove the Plugs.
Step 4: Stupid Design by Kia.
Step 5: Comparing Old and New.
Step 6: Install the New Plugs and Complete the Job.
Installation is the reverse of removal. Tightening of the new plugs should be done with a torque wrench, or in the absence of one, just dont arm wrestle the plug!
Now the car runs a bit better and has improved fuel economy.