[Overdrive]

Well, no need to say anything like that to them, I just feel like before even trying to drive another car to see if it makes similar noises, they could've just checked everything under your car and make sure nothing is loose or unhinged because those are the easiest culprits for vibrations and rattles. If they find something like that, they can fix it for next to nothing and have you in and out quickly instead of all this full-bore troubleshooting that may not be necessary.