Used Mercedes-Benz S-Class for sale near Boxborough, MA under $899,990

Felt a bit like a fish out of water when buying a GMC Sierra among the Maserati, AMGs and Austen Martins, but Medi treated me like someone buying any one of those beautiful vehicles. My buying experience at Auto Excellent Group was probably the least pressured of all the cars I've purchased over 4 decades, as in no pressure at all. It was an easy going, informative, professional, and very friendly fun experience. Medi made sure I understood all new aspects and details of my new vehicle, right down to tire pressure readings and air pressure adjustments. I'm hoping to win the lottery so I can come back and purchase one of those Exotics. The LED pen is great too! Thanks Medi.

Dollar for dollar this is the best car that money can buy. A 3 year old MB Certified car with around 30,000 miles is the way to go. The price will be about 50% of original MSRP so you save about $50,000. I suggest 4 MATIC and AMG trim package. I 've owned other MB's, high end Jaguars, BMW's, Volvo's, VW's and several American cars, new and used. This is the best.

11/28/2025 I called Schneider at around 7:52 a.m. He then gave me the towing company’s number to arrange for the car to be towed at 8:39 a.m.
 At 9:29 a.m., Schneider called me to inform me that the tow truck had arrived at the dealership and that they were going to find out what happened with the power steering. He called me later and told me that the car was ready. Furthermore, he went the extra mile to check whether I was covered by my extended warranty. I had a great experience with Schneider. Kami P.

Franklin is great. Thank you for your support help and patience with me. Love the car. At rides great. The paperwork and process was fast

Medi was wonderful to work with. I will recommend him to anyone and everyone. He will be the first person I call for any future cars. Thank you Medi.

Excellent car. I am driving S550 2015 for 6 years with no any mechanical problems, this car is soft driving and luxury finish and look.

Stephen Leung at Mercedes-Benz of Boston is the finest sales consultant? I have had the privilege of working with either at this dealership or any dealership in past years. He is professional, extremely knowledgeable, articulate, and a pleasure to deal with it gives you the pluses and minuses and is completely honest. I highly recommend him.

MBZ S-class always 5 ***** vehicle. The most luxurious , comfortable, car I ever drove . I highly recommend it . My old Mercedes S-class has 200,000 miles and not a single problem.

I have been servicing my cars with Smith for over 35 years. Always attentive to my needs. Simply the best for Sales, Parts and Service.

I just picked up my S580 Lux-Line in Emerald Green over Sienna Brown, and I am absolutely thrilled with the purchase. I have owned five S-Class models since 2010, including this new one, and I can say this is the best iteration yet from an overall perspective. While I still think the W222 was the best-looking (especially my 2019 S560 with the refreshed look and AMG pack), this new one does not disappoint at all. The Emerald Green is stunning in the sunlight, my favorite color yet. And the interior is on another level from a luxury and tech standpoint. I loved the interiors of all the S-Class models I've owned, but this current one is my favorite. The seats are super supportive, and the vast amount of tech is amazing. The new infotainment screen takes time to learn and get used to, but I feel the "Hey, Mercedes" function makes doing small things like putting in a Navigation request easier than going through the main screen. From a driving perspective, the ride is the best yet, just like gliding on a cloud. I've been lucky to have driven Bentley's and Rolls-Royce's in my lifetime, and this ride is as close as I've seen the S-Class come to being even with those vehicles on this front. And, the V8 is plenty punchy when needed, so it can be a fun vehicle to take on windy roads if you so desire. Overall, a wonderful vehicle and a bargain when you compare it to the other super-luxury vehicles on sale. I'm looking forward to the next few years of owning such an awesome car.

Greg Longo in service went above and beyond for me yesterday. Highly recommend Smith's friendly and knowledgeable staff. I will use Smith Motors for any warrantee work in the future.

I have driven an S Class Mercedes since 1995. I have not owned anything else. This 2023 S 580 4matic is amazing. With four wheel steering, turns are tighter than you predict. The performance is more than I can handle today and more than adequate. Interior, comfort and exterior are all within my normal Mercedes expectations. After driving this vehicle for 30 years, I am not sure I can accept LESS. Most any vehicle is accepting LESS. I also own a 2020 Range Rover Sport supercharged V8. Just as impressive but not as comfortable. The S Class is what all other vehicle manufacturers are typically chasing to "meet". I have test driven many comparable cars, but none worth buying.

60,000 miles and 9 years now having some issues. Front differential leak, driver active multi contour seat repair, coolant return hose small leak not major. I’ve test driven a number of other luxury flagships and still find the W-221 S Class to be more comfortable and road worthy. Local independent shop provides excellent service at a significant savings from MB dealership. Still love this car and do not regret purchasing even tho repair and maintenance costs are high!

We just bought a C-300 2024 from Smith Moters. Chris Walden was a super salesperson. Every thing he said was true. The car has everything we wanted+. the transaction was seamless. The financial end of the transaction was efficient. We would highly recommend Chris and Smith Moters.

S450 is a great value. Plenty of power. Very comfortable. Quiet and smooth ride. Don't need the big engine. Would definitely buy again. Very dependable.

Great dealership. Brought my car in for 10k checkup. Alyssa was great, took care of everything including a brand new loaner car. Called me when ready and picked it up the next day cleaned and ready to go. Couldn’t be easier. Always enjoy stopping in and chatting with Armando and John.

I have had this car since 2017 and it have been just pure joy, works like a charm and i had only problems about the radio but thats it!

We called the dealership and asked about a specific vehicle. We explained that we couldn’t make it to a Boston for a while. They offered to bring the vehicle to us close to an hour and a half away and that really won us over. The vehicle was just what we were looking for and we purchased it. Thanks so much to Juan! He went above and beyond.

It is nice dealing with true professionals that care about the customer experience. What a great team at Kelly Infiniti. My service rep was Pete and exceeded all my expectations. Always taking excellent care of the customer needs and paying attention to minor details that makes a great difference. Outstanding!!!

This car should be classified as an “exotic”. The S550 Coupe is by far the best vehicle I’ve ever owned. Well, our 2008 S63 AMG was a monster, but very heavy. The ride is harsher than expected over rough roads, but it isn’t close to a deal killer. The interior is perfect, but the controls were clunky at first….until you get used to it.