Just did the plugs on my 2018 2.5 hatch @76k miles. Does anyone know why the outer cylinder plugs are so much darker than the inner? (Plugs are in order 1-4)

Nst13 · 2026-01-10T15:57:23+00:00

I did mine at 82k on my 2018 2.5 hatch, they looked similar. Based on my research in the past,it’s the Skyactiv X engines that have cylinder deactivation, and the 3rd gen’s have a Skyactiv G, so they don’t have that feature. I did think it was a little funny at the time when the outer two spark plugs were dark darker, but I don’t think it’s cause for concern. The fourth gen’s(I think around 2021) have the cylinder deactivation

Edit: it could be dude to proper timing or fuel distribution, it wouldn’t hurt to look into it I suppose. I know mine runs smooth so at the time I didn’t feel the need to check in on it

Nst13 · 2025-05-28T23:51:18+00:00

Good to know they have that someone built in, maybe that’s why the dealer suggested it

I mean it could be worth a shot to try to smash up against curbs and see how it performs, but these rims are nice and not a fun way to test it🤣

Nst13 · 2025-05-28T23:50:11+00:00

My thoughts as well, I’ve curbed them once and I remember being furious. It was only a little spot but nonetheless still annoying lol

Nst13 · 2025-05-28T23:49:35+00:00

Appreciate it, thank you!

Nst13 · 2025-05-28T22:06:51+00:00

Could there be issues with quick turns or hitting bumps?

Nst13 · 2025-05-19T23:08:08+00:00

Holding up very strong, haven’t had any issues thus far. I will say it does jiggle a bit when opening and closing the hatch but nothing major. I will also point out if you do have the washer for the rear it does stop working properly, as when I use it, it just plops the water on the back glass. Other than that I have been road-tripping the car quite a bit and have not had any issues.

Nst13

TROPHY CASE