New and used 2026 Mercedes-Benz GLC 300 for sale near West Islip, NY

I had reached out to several car dealers regarding Mercedes and BMWs and Rodni was the first to respond. Even though I live in Central NJ, his prompt response was impressive so I went out to this dealership a few days later. I wound up purchasing a beautiful Mercedes and I'm very pleased with my dealership experience.

TONY MANGIOLINO WAS TERRIFIC HE WAS A TRUE GENTLEMAN--NEGOTIATION PROCESS WAS PAINLESS. DID NOT PURCHASE CAR YET--BUT WILL TURN BACK TO HIM IN NEAR FUTURE FOR PURCHASE

Jay and his manager Evan were a pleasure to deal with. Highly recommend Greenwich Mercedes. Ty Mark

We just purchased a car from this dealership, and the experience was night and day compared to our prior one at another Mercedes dealer. The team here is incredibly friendly, down-to-earth, and easygoing—such a refreshing change! Albert is the one who helped us, and he truly went above and beyond. He was patient, helpful, and never pushy. He even took the extra steps to help us clean out our old car, remove the old box and items, and made sure everything was taken care of. It was such a smooth and relaxed experience—nothing like the stressful process we had at the other dealership. Highly recommend working with Albert if you’re looking for a great car-buying experience!

It’s probably one of the best luxury car dealership in New York if not in the country, and Victor Cosme our sales consultant made that possible .

Look at that smile !! Thank You Jerry Sherry for Maureen's 2024 GLC300 ! Amazing customer experience. Ralley Motors are the absolutely best in the industry. We will definitely be back for the next purchase.

I had an incredibly smooth and painless new car leasing experience yesterday with Trentino Manco and his colleagues at Rallye Motors in Roslyn. I was not surprised – I have purchased and leased my last four cars with Trent’s assistance. He is always professional, helpful, honest, and trustworthy. Trent has made the previously unpleasant car buying/leasing experience a thoroughly enjoyable one. I wholeheartedly and highly recommend contacting Trentino Manco and his team if you are looking for a new Mercedes. You will be in good hands.

Leticia did an outstanding job helping us through the entire purchase process! She went the extra 10miles every time to address our questions and concerns with patience and a smile!

Every one was well informed and helpful. My sales person was Matthew Boer. I felt very comfortable with him. Both due to his knowledge and attitude. A hugely different experience than I had elsewhere. He tried hard and succeeded in getting me the car I wanted. Joseph and Jonathan also deserve a mention. Thanks guys.

Kevin has been an incredible sales person. One of the best I’ve ever had will continue to business with them.

Amazing Team! Albert Salib was great help and very kind. Helpful team all around and great environment in the dealership!

Leticia was great! She made everything easier with getting my car. Everyone I spoke to was incredibly nice and always were willing to help with any problem or question I had. Great dealership experience every time I showed up!

My Mercedes Experience of RVC is always pleasant, effortless and professional because of my incredible salesman, Craig German. Craig sold us our first Mercedes and we haven't dealt with anyone since that time. Not only is Craig extremely professional, he is knowledgeable about the product he sells. He is just an overall nice guy, who enjoys the public and making sure his customers are satisfied. More people in sales should be like him. We don't want to deal with anyone else! We hope Craig is there whenever we want to do some future business with MB of RVC!!