Galen Street Sunoco

Mechanic in Watertown, MA

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About This Shop

A trusted independent automotive service facility in Watertown, NY, specializing in general maintenance and diagnostics. Delivering high-quality workmanship, dependable diagnostics, and honest service is our standard. They handle everything from routine oil changes and brake service to advanced electrical diagnostics and engine repairs. Open weekdays 5:00 AM – 5:00 PM. Verified local business listing on WrenchConnect. Claim this page to take control of your profile, respond to reviews, and manage service requests.

Expertise & Specialties

General MaintenanceDiagnostics

Customer Reviews

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Nguyen Ngoa month ago

★★★★★

GSS is THE place to bring your car to for any type of work! They specialize in basically all makes/models and their craftsmanship is top notch! I brought my brand new vehicle straight from the dealership to them. I had some custom work done to my car and let me tell you, Elie and Dion will take care of you. I’ve brought a few cars to them before and their promise for turnaround time is perfect. Time is very important to me and they made sure of that. I highly recommend this shop to anyone who is looking to get work done to their vehicle. A++++

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Ryan M Fullam2 weeks ago

★★★★★

Eli, Dion and team always do a great job. Been brining cars there for 5+ years for various work from inspections and oil changes to custom body work and I am always impressed. I will not use anyone else!

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Sheng Wanga year ago

★★★★★

I’ve been bringing my cars to GSS since 2022, starting with my Porsche Panamera Turbo, followed by my Audi R8, and now my 991.2 GT3. Every time, their team has provided outstanding service with expert craftsmanship and attention to detail. Most recently, I had my PDK transmission and Final Drive serviced, along with an oil change, summer tire installation, and an exhaust modification. The work was done with precision, and the GT3 now drives flawlessly—smooth, responsive, and exactly as it should be. GSS has always been my go-to shop for both routine maintenance and performance upgrades. Their professionalism and deep understanding of high-performance cars set them apart. If you’re looking for a trustworthy and skilled shop, I highly recommend GSS! Big thanks to the Elie, Dion and entire team for their excellent work!

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isaias cordero2 months ago

★★★★★

Took my father’s 2015 Mercedes-Benz C300 to GSS for an intake valve walnut blast and couldn’t be happier with the experience. The team was quick, honest, and professional from start to finish. The car has nearly 200,000 miles on it and now drives like new again. Huge thanks to everyone over at GSS for making the whole process smooth and effortless.

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Heather Mandeville9 months ago

★★★★★

I have used GSS on several occasions and their service has been excellent from every employee I came in contact with. From simply getting my oil changed to having major engine work, I have found them honest & their workmanship top notch. Even getting gas there is a pleasant experience. Since I began bringing my car here, it has ran better than it had in years. I was considering trading it in as it was getting older, however it runs so good now I am happy to keep it. If you are looking for a new shop in the Newton or Watertown area, I would definitely recommend giving them a try. Their customer service is A+!

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Shop address

170 Galen St, Watertown, MA 02472, USA

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Business HoursOpen Now

Monday5:00 AM – 5:00 PM

Tuesday5:00 AM – 5:00 PM

Wednesday5:00 AM – 5:00 PM

Thursday5:00 AM – 5:00 PM

Friday5:00 AM – 5:00 PM

Saturday8:00 AM – 12:00 PM

SundayClosed

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