Used 2021 Mercedes-Benz GLC 300 for sale near Roslyn Harbor, NY

Shout out to Genesis for helping us get our dream car , she was very honest , helpful , charismatic ! Anyone will like to buy a Car from her , and she did every single think to make sure my car was clean and in good condition . Also I love my car very comfortable.

Quick response and knowledge in answering all my questions. Unfortunately, the vehicle I was interested in purchasing was sold.

I absolutely love this compact SUV! Coming from a Subaru Outback, this is light years above and beyond for same year. A quiet cabin is my top want for buying a car. This cabin is quiet and relaxing inside. I’m tall and there is plenty of room. The seats are incredible! Can’t wait to take it on the roads in winter.

We have been leasing our vehicles at Advantage Hyundai for several years. We recently leased a new Tucson. Our sales advisor, Opal, was very helpful. Their service department is excellent. We highly recommend them. Carol & Jim

I have the GLC43 AMG and it's awsome! It has plenty of guts and is extremely comfortable. I would highly recommend this vehicle to anyone.

We always have a great experience at this dealership! Bobby has consistently taken amazing care of us over the years, and we couldn’t be more grateful. Sally Morshed and Seth have also been exceptional throughout every step of the process—professional, attentive, and genuinely helpful. What really sets this group apart is their honesty and integrity. They’re not just trying to sell us something—they truly care about doing what’s right, even in today’s world where costs are rising everywhere. We sincerely appreciate the time, effort, and genuine care they put into every visit. A fantastic team all around!

I have had this vehicle for only one month so have not developed much experience with it. I did take it on a 1400 mile trip two days after purchase. It ran well, was very comfortable to drive, made for a very easy trip, was great on gas mileage, and it is very quiet inside the cabin. Seat comfort is exceptional and this, being our first experience with heated seats and steering wheel, was most enjoyable.

We’ve been buying cars here for the last 6 years. My go to place to purchase all my cars. Everyone is friendly.

This car has everything technology offers in it plus more. The feel of this vehicle is extremely smooth snd quiet. One of the best purchases of ever made. I’m extremely pleased and love it

Best experience and fastest total transaction I’ve had in my car buying experience. From the easy access to the dealership off the West Side Highway, to the amazing environment they’ve created inside, to sales consultant Gregory Gazzola’s expertise and ability to read a customer and deliver the vehicle I wanted, at the price I could afford, expeditiously, it was absolutely the best experience. I emailed Gregory this morning, he found me a vehicle, presented a deal, and gave me a pick up time for earlier this afternoon. I was in and out of the dealership in less than an hour today – I’ve spent more time in Home Depot buying a grill. I highly recommend Mercedes-Benz of Manhattan and Gregory.

Overall Great Experience from start to finish. Elder and Ralphie communicated with us every step of the way and made the process of buying our car seamlessly. They both were friendly and professional. I would definitely recommend Stream Auto outlet in Islip if you’re looking for a great selection and team. Mark & Jenny

Great experience dealing with Rafael got what I wanted definitely will be back in the future

It has been a pleasure working alongside Carlos at stream auto. He and his team made it an easy smooth transition for me to leave there with a great car and a smile on my face thanks again team five stars to Carlos

The Acura team is thorough and I've never had a problem after any service. I'm glad the car wash machine was up and running as that and a vacuuming is a nice perk!

Very friendly family owned auto dealership. Dave were very accommodating with our situation and gave us a fantastic car at a great price.

Purchased a car via web. Assigned sales associate, Sunni Wang was very professional and responsive and made the transaction enjoyable.

Michael D’Lois is professional and knowable I asked him about my car warranty He checked and explained the oil change was under my car warranty. New filters will cost me. I will definitely give Michael 10 stars. All the Nissan staff greet you with a smile and warm hello…

I highly commend Mr. David Garcia for his knowledgeable, professionalism and caring follow-up manner in which he demonstrated, during the purchase of my Mercedes Benz. Although I was disappointed in dealing with the sales/financial manager for his inappropriate, condescending attitude, Mr Garcia was able to diffuse our differences and finalize the purchase.

Ryan Lewis was a very considerate and professional sales person. The financial department Was very polite and professional as well. The dealership is always very clean and welcoming. I would recommend people to the Riverside dealership. Thank you.

Absolutely amazing as always! Made a quick call with Miss T at Front Desk, she got the Service Dept ASAP for an appointment for change on a flat/damaged tire with Dani, in Service. Giovanni helped with the process all the while I was there. He kept constant updates with me on how the car is being managed and how long it will take. Knowing my kids and I outgrew the current A4, I lease with Audi Jack Daniels Upper Saddle River, I gave it a try to browse a bigger car with them. Adam Z in Finance, (super cool guy!) with whom I worked last time to lease my current car, introduced me to Anna Aslanian in Sales and Carlos in Finance. They all worked with me on the best car option and the best monthly lease rate. The entire team just made my day! I drove in to change the spare tire with a new one (NYC - fix the potholes on GWB please!) and I drive out of the dealership with a 2022 Q5! Again, absolutely friendly and courteous, seamless service as always! Thank you Anna, Adam, Carlos, Miss T, Giovanni, Dani and everyone involved! Now I have the new Q5 for a week already and can't wait to drive it out a 2nd weekend in a row Upstate NY! The car runs smooth, we all feel safe in it, I'm very happy to stay with Audi and always feels like home when I drop by the Jack Daniels Upper Saddle River Dealrship! THANK YOU All :) <3 <3 <3 Gigi

I had an excellent experience at Fast Track Motors. From the moment I walked in, the staff was friendly, knowledgeable, and genuinely helpful. They took the time to understand what I was looking for and helped me find a vehicle that fit my needs and budget perfectly. The buying process was smooth, transparent, and pressure-free. I appreciated how clearly everything was explained, and there were no hidden fees or surprises. The vehicle I purchased was in great condition, clean, and exactly as advertised. What really stood out was their customer service—responsive, professional, and honest. Even after the sale, they followed up to ensure I was happy with my purchase and answered any questions I had. I highly recommend Fast Track Motors to anyone looking for a quality vehicle and a dealership that truly cares about its customers. I’ll definitely be returning for future purchases!