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*Estimated payments are calculated by Cars.com and are for informational purposes only. We’ve estimated your taxes based on your provided ZIP code. These estimates do not include title, registration fees, lien fees, or any other fees that may be imposed by a governmental agency in connection with the sale and financing of the vehicle. Other taxes may apply. They do not represent a financing offer or a guarantee of credit from the seller. Actual terms vary by lender.
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Used
2020 Mercedes-Benz GLS 450
for sale
near
Wilton, CT
- Down Payment
- $0
- Net trade-in value
- $0
- Months
- 72
- APR
- 7.0%
- Sales tax
- 0.0%
*Estimated payments are calculated by Cars.com and are for informational purposes only. We’ve estimated your taxes based on your provided ZIP code. These estimates do not include title, registration fees, lien fees, or any other fees that may be imposed by a governmental agency in connection with the sale and financing of the vehicle. Other taxes may apply. They do not represent a financing offer or a guarantee of credit from the seller. Actual terms vary by lender.
**Your Saved Vehicles list will be shared along with your contact information when you submit a vehicle request to a dealership. To opt out of this sharing, please view your options on Cars.com Privacy Notice.
Used
2020 Mercedes-Benz GLS 450 4MATIC
Used
2020 Mercedes-Benz GLS 450 4MATIC
Vehicle information
Features
Reviews
It was great to be able to make an appointment without
It was great to be able to make an appointment without any delay. Had to call versus doing online, but at least you get a person to answer right away. Great follow up before, during, and after the appointment by Jose.
Love it so far
Special. A delight to drive. Love the way it handles. Extremely responsive, both acceleration and steering. Cabin is very quiet and at night almost too relaxing.
Used
2020 Mercedes-Benz GLS 450 4MATIC
Vehicle information
Features
Reviews
Very Satisfactory with the customer service when buying
Very Satisfactory with the customer service when buying my Porsche Cayenne coupe , Thank you. Porsche is one of my favorites, especially the Cayenne model and now the coupe, excellent
very roomy and functional
I have test drive the range rover the X7 and I find this is the best for me , it has the room and comfort plus all the safety plenty of power too with a good mileage for a car this size .
Used
2020 Mercedes-Benz GLS 450 4MATIC
Vehicle information
Features
Reviews
Great Service, quick appointment, and they wash
Great Service, quick appointment, and they wash my car everytime. Convenient location just off I-4 and highway 46. Sometimes I use their customer shuttle to take me home.
Large yet stylish enough to carpool the Grands
We just bought this car. Comfortable, roomy, easy to drive. Not quite a luxury ride that the Lexus GL has but performs well. Takes a second to get comfortable with the bells and whistles. Beautiful car, 2 2 2 seating. Easy for kids to get in without climbing over or moving a seat. We bought this SUV for me to drive around town as well as to school carpool my grandchildren. So far...very pleased. This is my third Mercedes. My only complaint with Mercedes is the fuel tank on the passenger side. I feel a little more vulnerable being on the opposite side of the driver side when pumping fuel. I assume it has been this way for years. I guess safety at the gas station was not as big of a concern as it is today. If considering a luxury SUV test drive. I think you will be pleased/
Used
2020 Mercedes-Benz GLS 450 4MATIC
Vehicle information
Features
Reviews
Great experience.
Great experience. Scott answered all my questions and concerns and helped us find our new ride
Must silence car I ever own!
The Mercedes GLS is my second Mercedes and like always very satisfactory process to buy at the dealer. Great vehicle! Outstanding engine and transmission! Very confortable for the entire family 😂
Used
2020 Mercedes-Benz GLS 450 4MATIC
Vehicle information
Features
Reviews
I had a very stress free and simple purchase.
I had a very stress free and simple purchase. My salesman Sayed was outstanding — very knowledgeable, very accommodating of changing schedules, and very pleasant to work with. There were none of the “usual tricks” — disappearing with the trade-in keys, asking “what it would take to buy the car today” etc etc. They honored the “internet price” without being asked. The best compliment I can give is that I would go back there to buy another new car.
Used
2020 Mercedes-Benz GLS 450 4MATIC
Vehicle information
Features
Reviews
Thank you Nick & A.W.E., in Plano Texas.
I had a 2018 all black challenger, and decided the color just wasn't for me. Nick Barbera gave me a smoking great deal on my trade in for a beautiful 2020 Challenger in indigo blue. It has a cinnamon red leather interior, and I am very happy with this car. Hats off to all the good people at Auto Web Expo in Plano Texas!!! I would recommend them to anyone looking to upgrade from the car they have, to the car of their dreams.
Used
2020 Mercedes-Benz GLS 450 4MATIC
Vehicle information
Features
Reviews
Buying my new Sonata was a great experience at Luther
Buying my new Sonata was a great experience at Luther Bloominton Hyundai. Salesperson Jack Tobin arranged test drives, pointed out all the features of the car, explained Hyundai’s warranty, and answered all my questions. There was never any pressure to buy. I was provided with detailed upfront competitive pricing and a very satisfactory trade-in offer. Everyone I met or dealt with at the dealership was friendly and helpful.
Used
2020 Mercedes-Benz GLS 450 Base 4MATIC
Vehicle information
Features
Reviews
Dennis G my salesman was awesome.
Dennis G my salesman was awesome. Knows his stuff and he had all the paperwork ready to save me time. Anthony the financial guy was great as well, knowledgeable and friendly. I would recommend them both to anyone looking for a car. I love my 2022 Polestar car I bought from them. Thanks for your help guys!!
Used
2020 Mercedes-Benz GLS 450 4MATIC
Vehicle information
Features
Reviews
Stephen was excellent.
Stephen was excellent. Friendly, helpful and knowledgeable. It was my first time for service which was a brake recall. I have no idea how good the mechanic was. Waiting room could have more food like the Acura dealership does.
Used
2020 Mercedes-Benz GLS 450 4MATIC
Vehicle information
Features
Reviews
From the moment I stepped onto the lot at Florida Fine
From the moment I stepped onto the lot at Florida Fine Cars, I knew I was in the right place. In an era where genuine customer service feels rare, this team reminded me what true professionalism and hospitality look like. Every interaction—whether with the front staff, the sales team, or management—was warm, patient, and sincerely focused on making my experience exceptional. But I have to give a special thank you to Ralph, who is truly one of a kind. His knowledge, honesty, and ability to connect with customers is unmatched. Ralph doesn’t just sell cars—he builds trust. He made the entire process smooth, transparent, and enjoyable, and he treated me and my family with a level of respect and friendliness that left a lasting impression. People like him are the reason this dealership stands out in Florida. The prices were unbeatable, the inventory was impressive, and the service was nothing short of extraordinary. Florida Fine Cars has earned my loyalty—my family and I will be buying our vehicles from them from now on. If you’re looking for a dealership that actually cares about you, listens to you, and goes above and beyond to earn your business, look no further. Florida Fine Cars knows what true customer service is. Thank you again to Ralph and his entire team for delivering a world-class experience. Highly recommended!
Used
2020 Mercedes-Benz GLS 450 Base 4MATIC
Vehicle information
Features
Reviews
Charles Griffith is thorough, knowledgeable and helpful.
Charles Griffith is thorough, knowledgeable and helpful. Great at his job. Germaine is lucky to have him !
Used
2020 Mercedes-Benz GLS 450 4MATIC
Vehicle information
Features
Reviews
Marc provided me excellent service and I purchased an
Marc provided me excellent service and I purchased an Infiniti Q 50S thank you so much Auto Expo you guys are amazing
Used
2020 Mercedes-Benz GLS 450 Base
Vehicle information
Features
Reviews
Jacob has been an outstanding service advisor for our
Jacob has been an outstanding service advisor for our fleet of 40 vehicles with Seminole Public Transportation. His communication, professionalism, and attention to detail consistently make every service visit smooth and efficient. He always keeps us updated, helps us prioritize repairs, and makes sure our vehicles get back on the road as quickly as possible. We truly appreciate his support and look forward to continuing our partnership. Highly recommended!
Used
2020 Mercedes-Benz GLS 450 4MATIC
Vehicle information
Features
Reviews
My salesperson was great along with everyone else that
My salesperson was great along with everyone else that helped us. I would recommend Garber Chevy to anyone. I drove a long distance to make a purchase due to such a good deal.
Used
2020 Mercedes-Benz GLS 450 4MATIC
Vehicle information
Features
Reviews
Service with Thien, Mary, and Preston was fast and
Service with Thien, Mary, and Preston was fast and friendly. They always greet me warmly with my name.
Used
2020 Mercedes-Benz GLS 450 4MATIC
Vehicle information
Features
Reviews
Very responsive and easy to work with even though I’m out
Very responsive and easy to work with even though I’m out of state. I’ve had a great experience with them!
Used
2020 Mercedes-Benz GLS 450 4MATIC
Vehicle information
Features
Used
2020 Mercedes-Benz GLS 450 GLS 450
Vehicle information
Features
Reviews
Awesome
They made everything so easy. Got the car I never knew I wanted and I love it. Don't plan on taking it in any time soon but I know where I'll be going when I do.
Used
2020 Mercedes-Benz GLS 450
Vehicle information
Features
Used
2020 Mercedes-Benz GLS 450 4MATIC
Vehicle information
Features
Reviews
BEST place to buy a Subaru.
BEST place to buy a Subaru. Matt/Alex are exceptional. Very informed and knowledgeable. Taylor was very clear/concise explaining the pkgs that go with the car and the paperwork involved (by the way..nice shoes Taylor)Best experience we have ever had at any dealership. Excited to have them restore our Baha. Riley's is a diamond in a world of coal.
Mercedes-Benz GLS 450 prices by year
| Model year | Average price | Deals |
|---|---|---|
| 2026 Mercedes-Benz GLS 450 | $96,880 | |
| 2025 Mercedes-Benz GLS 450 | $90,301 | 8 Great deals |
| 2022 Mercedes-Benz GLS 450 | $56,237 | 9 Great deals |
About the 2020 Mercedes-Benz GLS 450
4MATIC shown (base trim).
- Seating
- 6
- Door count
- 4
- Drivetrain
- All-wheel drive
- Combined MPG
- 21
- Transmission
- 9-Speed A/T
- Engine
- 362.0-hp, 3.0-liter, Straight 6 Cylinder Engine (Gasoline/Mild Electric Hybrid)
How much does the 2020 Mercedes-Benz GLS 450 cost?
The 2020 Mercedes-Benz GLS 450 price depends on several factors, including the trim level, optional features, mileage, vehicle history and location. The nationwide average price for a 2020 GLS 450 is $36,085, with pricing starting at $23,991.
What is the MPG of the 2020 Mercedes-Benz GLS 450?
The 2020 Mercedes-Benz GLS 450 offers up to 19 MPG in city driving and 23 MPG on the highway for a combined rating of 21 MPG.
These figures are based on EPA mileage ratings and are for comparison purposes only. The actual mileage will vary depending on the selected vehicle trim, driving conditions, driving habits, vehicle maintenance, and other factors.
What are some similar vehicles and competitors of the 2020 Mercedes-Benz GLS 450?
The 2020 Mercedes-Benz GLS 450 compares to and/or competes against the following vehicles:
Is the 2020 Mercedes-Benz GLS 450 reliable?
The 2020 Mercedes-Benz GLS 450 has an average reliability rating of 4 out of 5 according to Cars.com consumers. Find real-world reliability insights within consumer reviews from 2020 GLS 450 owners.
Is the 2020 Mercedes-Benz GLS 450 a good SUV?
Below are the Cars.com consumer ratings for the 2020 Mercedes-Benz GLS 450.
- Comfort 4.7
- Interior 4.6
- Performance 4.5
- Value 4.1
- Exterior 4.7
- Reliability 4.0
71% of drivers recommend this car
- Comfort 4.7
- Interior 4.6
- Performance 4.5
- Value 4.1
- Exterior 4.7
- Reliability 4.0
GLS 450 (1 style)
| Style |
|---|
| GLS 450 4MATIC SUV |
| Inventory price |
| Starting at $75,950 |
| Combined MPG |
| 21 |
| Engine |
| 362.0-hp, 3.0-liter, Straight 6 Cylinder Engine (Gasoline/Mild Electric Hybrid) |
*Estimated payments are calculated by Cars.com and are for informational purposes only. We’ve estimated your taxes based on your provided ZIP code. These estimates do not include title, registration fees, lien fees, or any other fees that may be imposed by a governmental agency in connection with the sale and financing of the vehicle. Other taxes may apply. They do not represent a financing offer or a guarantee of credit from the seller. Actual terms vary by lender.
**Your Saved Vehicles list will be shared along with your contact information when you submit a vehicle request to a dealership. To opt out of this sharing, please view your options on Cars.com Privacy Notice.
Research the 2020 Mercedes-Benz GLS 450
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This vehicle is certified pre-owned, backed by a manufacturer warranty, and typically undergoes a rigorous multi-point inspection to ensure quality and reliability.
This vehicle is currently in high demand given its competitive price, desirable features, and overall condition, and may have a higher chance of selling quickly.
