For anyone changing their spark plugs, this thread is a good place to start. I came across someone who video recorded changing the spark plugs on their 2014 Mirage since this thread was first started.
I noticed by the comment section, Dirk had been there!
If anyone is interested in doing this job themselves, Cobrajet's write up and viewing this clip should make the job much easier.
I thought I would add it to this thread rather than start a new one.
Mitsubishi Mirage 2014 spark plug replacement
https://www.youtube.com/watch?v=4LowWL0KcLo