I was hoping the other reviews were not a real reflection of this business but my experience has…read morebeen even less than 1 star. I made an appointment to get my battery replaced and was told there was no issue with the battery and that the alternator needed to be replaced. I gave the green light for that and then get a call that they need to replace the battery when that's why I brought it there in the first place?? not only that but whoever is answering the phones here thinks it's appropriate to hang up on customers when they ask for an explanation. DO NOT GO HERE unless you're getting EVERYTHING in writing. They will call you a liar when they're being dishonest.

Took my car to Willy's last weekend for a gasket repair. When I was driving on Flanders rd on…read moreThursday night I got a message saying my coolant temp was high and I ended up not having any coolant in my car because they forgot to tighten the hose. Just today my check engine light came on.

As a home car hobbyist, it's important to have a good source for auto parts. I've been going to…read moreAdvance Auto Parts in Mattituck for years and have always been satisfied with all the staff. They are prompt, professional, friendly and many times go above and beyond the call to get me the parts I need. I highly recommend them.

Donna is wonderful to deal with! Extremely helpful and best customer service I've ever received in…read morean auto parts store (been to many).

in a bad situation with my classic 85 Firebird sent out Rapid Recovery with their driver totally…read moreprofessional protected my classic car and delivered it to my I appreciate his professionalism and his expertise for a job. Well done definitely a asset to your company he was the best

Scott is a family man, does great business, I recommend him and his company to every one, even if…read moreyou don't have tow insurance, please call them, they have worked for us for years, my boyfriend has a deadly disease from a car accident, and they give u great prices , He can move anything anywhere, his family I speak to never fails. Please take my advice because there's no better company

Have used them for years...no, decades. ALWAYS helpful,knowledgeable, and courteous. If any item…read morehappens to be out-of-stock, it's ordered overnight as their routine. Tremendous selection, fairly priced. Would go nowhere else.

They have been in business a long time, they are helpful and honest without the typical and…read moreannoying 'tough guy' auto repair industry feel.

i got a flat out here in the hamptons. The folks were more then nice if that's possible. He got the…read moretire later afternoon and fixed the tire! This man and his wife are the loveliest folks I have ever met! Very reasonable too! They do inspections and other things! Come here to the honest best place in the Hamptons!

They charged my wife $80.00 to repair a slow leak in one tire. There was a small screw in the tire…read morewhich required a plug and nothing else. What a rip off. Most shops charge $25.00 to plug a tire. Jim D.

I gave them lots of stars because of Smitty in service. He is the best and always around to help…read moreI would purchase a mercedes there because I know Smitty will show me how to use the all the controls sink my phone and help me out when I call. I can't wait to get my new mercedes in a few months I just bought a mercedes C300 from Mercedes of Southampton. My husband has a S 550 which I thought was to big for me but loved the service from Smitty. I knew I wanted a Mercedes. The sales consultant was fabulous and explained my choices. He was patient and helpful with no pressure. The next day I went back and bought the 300. Not only do I have a car I love I made a new friend. Alan Weiss was fantastic. He made buying a car easy, gave me a fair price and helped with the insurance. If you see a hip 70 year old in a red C300 give me a wave and buy your next car from Alan Weiss

I had an Extraordinarily poor experience! I have used Mercedes of Southampton several times over…read moretwo years to repair a convertible top. They fixed it last year and six months later I had the same problem. When I brought it back they charged $614 for diagnostic check and said more diagnostic tests were necessary at an additional charge. It seems very strange that they are charging for multiple diagnostic checks for a problem they supposedly had fixed last year. When I complained the service manager he was rude and said it was an old car inferring that I should buy a new car. If I do buy a new car, it will not be from Southampton Mercedes!

I visited EAst Coast CC a few days ago for an update to my stereo. Spoke with Russel a few days in…read moreadvance and dropped the vehicle off. Asked for a last min update and Russel was able to accommodate. Super cool and chill guy and service was amazing. Same day completion and results exceeded expectations. Highly recommended.

Russell did an AMAZING job installing a remote start and alarm system in my New Toyota. What a…read moreterrific job he did at a GREAT price.

New *** UPDATE ***…read more11/12/25 My interaction with the team over at Riverhead Mazda service department was so impressive that I came back the following week to purchase a second car!!! Again I was treated with respect and a knowledgeable team effort to ensure my needs were met. Special Thanks to my sales advisor Robyn who made herself available to me even during her time off to answer questions and assisted with connecting me to onsite staff promptly. Gerson (sales manager) worked together seamlessly with Robyn from start of sale until the end. Again Riverhead Mazda Team went way above and beyond! ***Original Review *** 11/02/25 Phenomenal SERVICE DEPARTMENT!!!! Thank you Greg Williams and your ENTIRE Service Team for providing me with respect. After purchasing a Mazda from another dealer in Huntington not only were you able to finally fix an on going issue that I had been having since day of purchase (from them the previous year) but you and your team went above and beyond to rectify my relationship with Mazda after their dealership dismissed and minimized my issue (while failing to present the product that I paid for with my hard earned money). You were HONEST, informative and attentive the moment I walked in which made my experience easy and amazing. Good people are hard to find, thank you for being one. I am so happy and will not hesitate to be a return customer with you and your team at Riverhead Mazda. THANK YOU!!!!

Overall smooth transaction from service to sales. Amazing crew no pressure. I have anxiety issues…read morecoupled with focus problems. I drove one hour to meet these attentive folks.