Dieffenbach GM Superstore

Awesome experience. My sales person Tara went "above and beyond" to make the process smooth and kept me informed. I couldn't be happier with my new Tahoe.

Very pleasant experience! Brian was very helpful and knowledgeable all around, was able to answer any questions I had in seconds. And the rest if the staff was very helpful and friendly as well. My daughter's and I are very happy with our New 2026 GMC Sierra!

Andy, Tara and Rusty were amazing. Best new car shopping experience ever. They also gave a decent amount towards my trade in. Nobody near the beach came close to what they gave me.

Purchased a new vehicle, my sales person was GREAT! On the other hand the sales dept management was horrible, not only rude to myself but also the staff. The management really needs a lesson in manners and being respectful. Third dealership in a week, and disrespect was very obvious and customer service was horrible.

Great People to work.with. with no hassle or push to purchase. Will be back for more cars later in future.

The buying experience was nothing but incredible. We bought a 2022 Jeep they took in on trade, all they way from South Texas. When I expressed interest online, Tara Platt reached out to me within minutes. We bought it sight unseen, in person. She assured me it was perfect and it was. From arranging the shipment, to finalizing the paperwork, sending it through Fed Ex back and forth, everything went flawless. My only regret is we didn't get to meet Tara and the other staff in person. If you have never bought on-line, don't worry one bit dealing with Tara and the dealership. Thanks again for the awesome jeep and price.

Rockingham Team is customer focused. Andy Ashworth and owner care about their customers and the community. Highly recommend their home town atmosphere and professional dealership.

Best service ever! Andy made the process so smooth for us. Everything about this dealership is wonderful!

My husband and I recently purchased a new Tahoe, and Stephen, Rusty, and staff were so kind, helpful, and easy to work with! If you are ever in the Rockingham area and looking for a new ride, check these guys out! Thank you again to Dieffenbach for all of your help and hospitality last week! We appreciate you all!

we where traveling from Southport to Niagara Falls, stopped on our way in Rockingham. My husband hear this noise and said it’s probably our brakes. We pulled into Dieffenbach dealer ship, and ask f they could help. They repaired the brake pads and roter system. Big shout out to the Service Manager that day, and the mechanics which did a super job getting us back on the road. Thank you for your excellent service. Now we where abel to meet our kids at Niagara Falls and we celebrated our 50 th anniversary. We will always recommend Dieffenbach Dealer to others. Super job done well.