About Us

Key Buick GMC of Somersworth is a proud member of the Key Auto Group. Where car buying is made simple. We put our best price upfront so you can spend more time selecting a vehicle that best fits you and your families needs. We are excited to be selling Buick, GMC's, Pre owned in the Hilltop city!

We have a strong and committed sales staff with many years of experience satisfying our customers' needs. We carry new Buick and GMC's. Key Buick GMC carries all pre owned makes  Acura, Audi, BMW, Buick, Cadillac, Chevrolet, Chrysler, Dodge, Fiat, Ford, GMC. Honda, Hyundai, Infiniti, Jeep, Kia, Lexus, Mazda, Mercedes Benz, Mini, Mitsubishi, Nissan, Ram, Subaru, Toyota, Volkswagen, Volvo

We have a full service department with GM Certified Technicians that can get your vehicle back on the road quickly. Looking for service or towing in  Somersworth, Dover, Portsmouth, Rochester, South Berwick, Berwick, North Berwick, Greenland, Rollinsford, Sanford? We want to be your 1st and only stop. Our goal is 100% satisfaction with Sales and Service.

If you don't see what you are looking for, click on CarFinder, fill out the form, and we will let you know when vehicles arrive that match your search! Or if you would rather discuss your options with our friendly sales staff, click on Directions for interactive driving directions and other contact information. We look forward to serving you!


Key Buick GMC of Somersworth

155 Route 108
Directions Somersworth, NH 03878

  • Sales: (603) 842-5036
  • Service: (603) 842-5036
  • Parts: (603) 842-5036


  • Monday 8:00am - 8:00pm
  • Tuesday 8:00am - 8:00pm
  • Wednesday 8:00am - 8:00pm
  • Thursday 8:00am - 8:00pm
  • Friday 8:00am - 8:00pm
  • Saturday 8:30am - 6:00pm
  • Sunday 11:00am - 5:00pm