About Us

Granite State Auto Repair started in 2009 when Mike Sullivan decided there had to be a better way. After years of working at dealerships and watching customers get overcharged for simple repairs, he opened his own shop with one goal: treat every customer the way he'd want to be treated.

What started as a two-bay shop on Valley Street has grown into one of Manchester's most trusted repair facilities. But the philosophy hasn't changed — honest diagnostics, fair pricing, and quality work that we stand behind with a 24-month warranty.

We're not the cheapest shop in town, and we're not trying to be. We're the shop that does it right the first time, explains everything in plain English, and never sells you something you don't need. That's why our customers keep coming back — and sending their friends and family our way.

Fifteen years later, we're still here, still family-owned, and still doing things the right way. Whether it's a quick oil change or a major engine repair, you'll get the same honest service that built our reputation.