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Sales: (203) 242-0239
Service: (203) 242-0240
The Difference is Clear, The Difference is Daddario

Vehicles

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D'Addario Auto Group Holiday Hours 
Sales Department:
Saturday July 4th 10am - 2pm
Sunday July 5th 11am - 4pm 
Service department at Daddario Buick GMC Cadillac Collision repair at Daddario Buick GMC Cadillac Parts department at Daddario Buick GMC Cadillac
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Customer reviews

4.5 / 5

Dealer Rating

Our average rating from our customers is

4.5 / 5

Read Reviews

  • Yukon XL Denali Customer reviews

    Alex was my service adviser. He was excellent. Tom finished the transaction because Alex was out. The check cashier out was perfect. The vehicle had been washed and the service performed exceeded my e

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  • Terrain Customer reviews

    I visited several dealerships before going to Mario D'Addario GMC. I liked the showroom set up and did not feel pressured. Steve was great and I ultimately decided to make my purchase through this dea

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    2015 GMC Terrain
  • Sierra 1500 Customer reviews

    I bought a 2015 GMC Sierra Denali and I spent quite a bit of time with the salesman Ed who was very knowledgable about the gmc vehicles. Ed was able to find me the perfect vehicle and was also fair on

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    2015 GMC Sierra 1500
  • Park Avenue Customer reviews

    My 2002 buick has been serviced at your dealership since Ipurchased it there 13 years ago. have always been satisfiedwith the service department. The car still has an incredibleride as it has been wel

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  • Acadia Customer reviews

    Very satisfied.

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    2013 GMC Acadia
  • Enclave Customer reviews

    The staff is very efficient and helpful.

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    2015 Buick Enclave
  • Sierra 1500 Customer reviews

    6 month service for my new 2015 Sierra SLT and complete interior and exterior detailing service. Truck is perfect.

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    2015 GMC Sierra 1500
  • LaCrosse Customer reviews

    Oil Change a d Cabin Air Filter change. All went well and staff was curious as always.

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    2012 Buick LaCrosse
  • Terrain Customer reviews

    Great experience

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    2015 GMC Terrain
  • Canyon Customer reviews

    Excellent service from Nelda and everyone else at D'Addario. No pressure to buy. A pleasant experience and a nice GMC Canyon.

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    2015 GMC Canyon

Vehicles

Welcome to Mario D'Addario Buick GMC Cadillac in Shelton


Welcome to Mario D'Addario Buick GMC Cadillac. Since 1968, our dealership has been selling the finest automobiles and providing the best service to our friends in the Shelton area. Our commitment to outstanding customer service has never wavered and we welcome you to experience the D’Addario difference whether buying a new or used vehicle, researching financing options or visiting our state of the art service department and collision center. Feel free to browse our up to date Shelton Buick, GMC & Cadillac inventory and please contact us if you have any questions or would like to schedule a test drive.

Shelton GMC, Buick & Cadillac Dealer Serving Bridgeport, New Haven and Beyond

For over 43 years, customers from Bridgeport, New Haven and beyond have been making Mario D’Addario their dealership of choice. Located on Bridgeport Avenue, we’re just off Route 8 between Exits 12 and 13 in Shelton, CT. If you are looking for a New Haven Buick, GMC, or Cadillac dealership, stop in today for the best selection in the area. We offer the full line of both makes including the Buick Enclave. This SUV has advanced technology both inside the vehicle and under the hood with exclusive QuietTuning technology, tri-zone climate controls, intelligent AWD system, StabiliTrak and more. For the truck driver, we recommend checking out the GMC Sierra 1500. With the leading power and performance you’ve come to expect from a GMC engine, our pickup cabs are now equipped with the latest technology including rear vision camera, touch screen navigation, Bluetooth, OnStar and more. We welcome all our Shelton GMC, Buick & Cadillac customers to our dealership and take a look at our huge inventory.

A New Haven Buick GMC Cadillac Dealer Serving Bridgeport

Just minutes from I-95 and the Merritt Parkway, the best in American luxury automobiles are at your fingertips. If you are looking for a New Haven or Bridgeport Cadillac car or crossover, our Mario D’Addario Cadillac selection in unrivaled in the Shelton area. Proudly showcasing the Cadillac CTS Sedan, this fine automobile is the best in new automotive innovation. With a perfect blend of luxury, performance and technology, the award winning CTS is in a class unto itself with a heated steering wheel, swiveling headlamps, rearview camera and German tested suspension to name a few. Come test-drive the new CTS or any of our other luxury Cadillac vehicles. And remember, all our Cadillac models come with the Cadillac Shield, the comprehensive care and maintenance program. We are proud to be your premier Cadillac dealer in Connecticut.   

Premier Shelton Buick, GMC, Cadillac & Used Car Dealer

If you are in the market for a used or certified pre-owned vehicle in Shelton, make Mario D'Addario Buick GMC Cadillac your only stop. We have a great selection of used vehicles from many different car manufacturers and we’re confident you will find the perfect vehicle to fit your needs. Use our website to browse our current pre-owned inventory, value your trade-in or request a quick quote on any of our in stock used cars in Shelton.

Shelton Buick GMC Cadillac Service and Parts Department

At Mario D'Addario Buick GMC Cadillac, you will find our certified service technicians to be the friendliest and most knowledgeable in Shelton. Schedule an appointment or bring in your Bridgeport and New Haven Buick, GMC, or Cadillac vehicle to get your vehicle back in peak driving condition. We also have a state of the art collision and paint center utilizing the latest industry technology to fix everything from dings and scratches to major body work. Also having great relationships with estimators and insurance companies, we know you will be pleased with our service.



Service | Parts Order Form | GM Accessories

Buick: Enclave | Encore | LaCrosse | Regal | Verano
Cadillac: ATS | ATS Coupe | CTS Sedan | Escalade | SRX | XTS
GMC: Acadia | Canyon | Savana Cargo Van | Savana Passenger Van | Sierra 1500 | Sierra 2500HD | Sierra 3500HD | Terrain | Yukon

Specials

Specials

Specials