r/s550Mustang

I was maybe trying to get ideas on my 2019 Mustang GT. It's been having trouble recently. Every time I get to a red light or a stop sign, or pretty much anytime, I'm just sitting still idling. It starts getting really rough, almost shaking the car.I've brought it to a mechanic, and they said it wasn't a vacuum leak, but I'm starting to doubt maybe the mechanic isn't truly checking. Turns out this is a big problem in the 2019s or at least the predominant enough problem where I find it enough online. I was just looking for any information on this problem. Kind of sucks that my dream car just started acting like this. Only 22,300 mi on this car. Should I give up on this car? I tried so hard to get it.

Im about to buy a mustang gt 2016 with 100k miles. Its an automatic, which i dont really mind since the price is not bad (i think). The last i got him to go down was 23k euros, which is around 27k US dollars. The car seems clean, has full history record and has been serviced by ford every year.

First owner had it around 6 months and the guy who is selling it is the 2nd owner (almost 10 years in his ownership).

This car has the following recall 25s92.

Ofc this is all on paper, im still gonna go check it up and test drive it to ensure everything is alright.

Any advice? Should i do it?

Im curious if anyone has installed one of the facotry shaker trunk subs from a 2018-2023 mustang into a different 2018-2023 mustang that didnt come with one from the factory. if you have, what all do I need to install one or is it just plug and play with the rest of the system.

for reference, i have a 2022 mustang gt premium with the 401a, gt performance package, magneride, active exhaust, manual trans (not sure if this is necessary to include) that came with the sync 3 with digital dash