I did a search and it looks like the culprit could be the throttle bodies/system or ignition coils but just wanted to post to get additional input.

I only started noticing this pretty recently but my car shakes or stutters lightly at random but constant intervals when I'm idling at a stop. My RPMs don't budge which is what I find strange. Any ideas what it could be? I had my head gaskets replaced under warranty and don't recall having this issue before that. My car has no performance mods except for an IPL exhaust which I put on a long time ago.

 

A bad motor mount perhaps? Have you had a dealership look at it?

 

Appreciate the help and it looks like I'll get it checked out this weekend at my trusty independent and see what he says as I'm going there to get a new clutch installed.

I've pretty much given up on dealerships. I got my head gasket replaced under warranty at one and my mechanic found broken/bent O2 sensors after they did the repair. The dealership pretty much gave me the "we did you a favor by repairing your head gaskets" mentality when I tried to get them to fix it and that there was no way to tell I didn't damage it myself while driving my car afterwards. I visited another local dealer before regarding a clutch issue and they said it felt normal when clearly my clutch/flywheel is done. I have 0 faith in dealerships and have so far left with more problems than before I went in.

I'm almost certain my car didn't shiver/shake like this before my headgaskets were replaced. From what the SA told me, they pull the entire engine so it could very well be the motor mounts. If my mechanic confirms, I'll try calling the dealership again but by the looks of it, they're already done dealing with me as my car is out of warranty.