The biggest offenders here in the PNW are actually pickup trucks. Having worked in the automotive industry recently, I know that pickup trucks are one of the only profitable classes of vehicles left for dealerships. It's really an unfortunate situation. People are willing to overpay for gargantuan vehicles that make too much noise, use too much fuel, and pose a severe risk to pedestrians, so they can build some kind of macho identity. This really seems like an area where governments should step in and put upper limits on vehicle size and noise generation.
The expense and hassle are both significant, but being away from that noise would be pretty nice. It's interesting to hear the perspective of someone with firsthand knowledge of the situation.
One thing I realized in this process is that you can find quiet and you can find walkability, but if you want both, that's way more difficult.
Also, in my experience, the loudest vehicles are all that way due to aftermarket modifications. And they're probably breaking noise laws that already exist but just aren't enforced.
I discovered this after making the now-regrettable choice of living very near a busy major road. I hear a lot of vehicles. (Sometimes so loud that I can't understand the TV in my own living room.)
At first I assumed it obviously must be motorcycles. But one day I gazed out the window and watched traffic for a while, and to my surprise, I learned there really are a whole lot of cars which have been modified to be super loud. I didn't exactly collect stats, but it's not obviously more one than the other.