Used Mercedes-Benz GLS 450 for sale near Nashua, NH

Two weeks ago we found a Jeep Rubicon on their lot that we liked, low-mileage with lots of pricey off-roading upgrades that made the price seem reasonable. My husband was thrilled. We decided to make the two hour drive from Southern Vermont, and were greeted warmly on arrival. We had easy rapport with Ted, and excellent conversation during the long financial process with Zach (okay, if I’m honest it was only long because we couldn’t stop talking). Three days later we returned to pick up the Jeep, which needed an O2 sensor. A couple days later my husband noticed the Jeep didn’t have a muffler - someone had taken it out and their mechanic apparently missed it - the sound hadn’t changed from our first visit and test drive. Fortunately, a quick phone call sorted it all out. All in all we’re very satisfied with our experience despite being a little surprised such an obvious piece, needed for inspections throughout New England, would be missing from the vehicle. However, their assurance that they must sell an inspection-ready vehicle, and quick action to right the issue saved their review, and our overall impression. Thanks, guys! We can’t wait to get out on the class 4s!

The sales team especially Ron was very knowledgeable and helpful in answering my questions and concerned. 2 thumbs up

I have this car for almost 6 years I have no major problem at all. We always use this for long drive and short heavy cargo. Excellent SUV.

One of the most positive purchasing experiences. Jaycob gave superior customer service and worked hard to ensure no long haggling. I would definitely recommend him!

I purchased the vehicle off of a lease in March with 60K miles. Overall I am pleased with the purchase. For the size the SUV is very nimble. The surround camera is a must. On a 350 mile round trip my 5'6" daughter-in-law had no issues sitting in the third row. I put the car seat for my grandson in the 2nd row drivers side because lifting the 2nd row back after 3rd row access is cumbersome and heavy on the drivers since you have to lift the middle seat as well. MB you have to make the 2nd row power back to upright position. Adaptive cruise control is outstanding but keep in mind you have to get the Driver Assistance package to get it. Harmon/Kardon surround sound is very nice. My big complaint is sometimes at speeds above 65 MPH there is front vibration. Does not happen all the time, sometimes I can cruise at 80 MPH and feels like I am sitting in my living room. I think it may have something to do with the Pirellis, I plan to switch very soon to Michelins. A very classy, roomy and comfortable SUV

From beginning to end, the experience of contacting them for initial questions and then buying the car (a Mini Cooper) was excellent. Ali was helpful and easy-going. No pressure. He had everything ready for me quickly and kept in good communication. I would buy another car from them without hesitation.

Owned this suv for 15 months purchased certified preowned with 33k miles and about half the price of new. The truck has only two issues to note but otherwise rides, drives and in all other respects is far and away the best automobile I’ve owned - which saying a lot for an old guy. The standard tires are nearly useless in snow and ice and we hope an aftermarket replacement will address the issue later this fall. The more annoying downfall is that although the ride is otherwise amazing, the truck handles sharp bumps very poorly - almost the feeling of a car with workout struts. I have had the struts replaced under extended warranty but the improvement was marginal. For most drivers the suspension issue wouldn’t likely be as much an annoyance but for my fellow ocders, be warned. I would buy the truck again, however.

Buying a car from Mo was great. I do not like buying cars. I do not like the standard buying script. Thankfully, Mo talked me through the process. Showed me a coupe of vehicles and never pressured me to buy. With his assistance, I was able to make the buying decision that was best for me. In my experience, the prices were more than fair. The team was awesome and they continue to work with you after the sale closes. If you have researched your desired vehicle. Know the prices and what is available. Go see Mo. He probably has the car for you at a great price.

This car met all my needs and more. Love the interior and the way its moves. So comfortable and reliable! Very pleased with this car!

Mercedes-Benz was extremely helpful when it came to helping me with the purchase of my new C300. The facility was immaculate and team very accommodating.

Smith Motors, and Ben Coppola was outstanding from start to finish with this process. He had outstanding customer service, and was very professional in handling all our questions, and concerns. I would recommend Ben and Smith Motors to all my family and friends!

Brought my 2016 E Class Wagon for routine service on May 6, 2025. The mechanic found some safety matters that my vehicle definitely needed and I was unaware of. My service advisor Stephen Lopes coordinated the service with the safety work. Steve set things up to get the additional work done and not to inconvenience me by supplying a vehicle to use. Highly recommend Mercedes-Benz Flagship Motorcars.

Nathan in Service takes excellent care of my needs. Nathan is an always an asset

Exceptional vehicle in the SUV class. We drove the BMW X7, Audi Q7, Volvo XC90 and this GLS 450 just kept blowing them out of the water. The ride is amazing and we feel the comfort level and size is the best

Dakota was honestly the best sales associate I have ever dealt with. She was professional, kind, straight to the point and fast. I was able to close my loan in 3 hours even with adjustments needing to be made on the paperwork because she made me a priority. Dakota was responsive to all of my silly questions and made sure my car was ready when I was available to pick it up. I would 100% recommend Dakota to anyone looking for a new or used vehicle because she will make it happen fast and smooth

Very happy with my purchase from RBM Alpharetta. The car has a very comfortable interior with all the features available. Handles well in town and on long drives. Good acceleration for such a big vehicle. Love the contemporary exterior.

Brian B in service is always a pleasure to work with. He explained everything that was needed, and arranged for it all to be done in a timely manner. 5 stars for Brian!

My wife needs to retire her car. We are looking at three brands and this was our first stop. We spoke to Brockton and he made it a great experience. If she decides on the Mercedes we will be back.

My 2 honest cents. Just bought the 2024 GLS 450 and it has a huge presence on road and it looks stunning! I went with the AMG exterior package and it looks way better than the base model. Ride quality is good, very smooth ride on freeways but you do feel small bumps on occasional city roads. The engine is good but I wish it had a bit more power, feels little laggy at low speeds but when you floor it it moves fast and steering is very responsive. On the other hand, cabin very silent tho and you barely get to hear road noise (without acoustic package). The Mileage is incredible on this, wasn't expecting to write about it but the GLS gives better mileage than my GLC. Interiors are amazing and is something no other manufacturer in this segment can match (especially at night with ambient lights), seats are super comfy and the infotainment screens are also crisp. Overall, love this SUV and i'm gonna keep it for a while.

Went to 3 other dealers before being reccomend to matt Harris and knew instantly it was our last stop. We has been treated like xxxx at the other dealers. 1 lied to us and another told us he would not replace bald tires on a 2 year old luxury vehicle. The second we met Matt we knew we were In great hands. My fiance got the Mercedes she wanted at a fair price and the vehicle recieved everything it needed in the shop before we looked at it. The finance guy treated us like human being and never once felt like I was being had. Oh I forgot to mention that I sold cars for the last 17 years so I recognized great people right away. We will always be loyal to Matt and appreciate everything he did for us

I highly recommend this dealership for both sales and service…Brian in the service department has always gone the extra mile to help me keep my cars In good running order… I have been with this dealership for over 15 years both buying and servicing my cars with them…I trust them …

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 always have an interesting car. I recently bought an AMG SLS Gullwing Coupe from MBOB. The sales associate, Mike, was exceptional. I did not have the car inspected, since MA has an auto warranty requirement. When I received the car, it did have a small oil leak. I have to say, I was concerned, since anything on an AMG car is expensive. However, after corresponding with Stephen (MBOB Service Director) and Tim (General Manager) they were good on their word and they coordinated with MB of Tucson for a valve cover gasket replacement. The car is fabulous, its condition is now perfect, MBOB's response was great, and I would not hesitate to buy a six figure car from them again!

I usually get SUVs or Trucks from American Brands. I wanted to get my self a really nice seadan. My buddy recommended me to go to Mercedes-Benz of Burlington before I go to any other luxury dealership. His recommendation was spot-on. Dealership is beautiful with a waterfall fountain plus a nice cafe. The staff is extremely accommodating. I met Collin Stankard valet who took me to TJ a sales associate. TJ was patient and helped me find the right car for my needs. Chris Caputo GSM took the time and found the proper numbers to make me happy because I like to haggle. Then I sat down with Steve Baker a finance manager me made the paperwork easy peasy. Elaine PC had an awesome delivery for me. I learned the ins and outs of the car. Tim Martino the GM was out on vacation but made sure that everything was done properly and I was treated like a VIP. My father was in the car industry. I know the games and gimmicks the people like to run. I'm extremely happy that I only had to go to one place and had a great experience. I'm now part of the mbob family.

I have worked with Brian for quite a while and I have been exceptionally pleased with the service that he has given me. I feel very comfortable having Brian in charge with the service department because he stays on top of what has to be done. I have found that Brian is very caring, professional, and knowledgeable and when I leave the dealership I know that everything was done perfectly. Janet Edsall Fields

I absolutely love the feel and performance of this suv. The electronics are state of the art. Excellent road performance in rain, snow or wind. My only complaint is the running board- it needs to be at least 1 inch wider. Actually dangerous in snow and ice.

Steve Boston gave us an exceptional service that makes us feel very comfortable with the all process and the best part without any pressure. We highly recommend Steve , it’s a very experience salesman and we’re very happy to have him as our salesperson . Thanks Angel and Dennys

My car buying experience with colonial Chevrolet was great. Charles Marks was very friendly and helpful along with the other staff involved as well. Love my new car and look forward to doing business with you. Once again, thanks Charles!!!

I bought this vehicle is a retirement car. He moves great is responsive and very smooth. I wanted a retirement car for my retirement. I am 60 years old and I want that something that represent my current status with luxury interiors, beautiful blue color, and 20 inch wheels it is awesome looking. I can reach 70 in the blink of an eye any moves like it's going at 30 or 40 miles an hour. He has an awesome radio system. although it is not all digital, the radios are for listening. I have an excellent sound, System. Great interiors, great materials, great lighting if you're planning to buy a GLS the 450 is definitely one of your best choices.