Is a mechanic blue collar?

Yes, a mechanic is a blue-collar worker. Blue-collar jobs are generally considered jobs that don't require a college degree, and they usually include trade, manual labor, or factory jobs. Since mechanics don't have to earn a college degree and work with their hands, they're considered blue-collar workers.

Mechanics often earn associate's degrees or professional certifications from a trade or technical school to help them get a job but don't usually need undergraduate degrees. They can generally learn all or most of what they need to know from on-the-job training, whether that's in a professional program or with the company they work for (or both).