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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
2021 Mercedes-Benz GLS 450
for sale
near
Niles, IL
- 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
2021 Mercedes-Benz GLS 450 4MATIC
Vehicle information
Features
Reviews
Vel is a great sales guy.
Vel is a great sales guy. Very responsive and will work with the customer. We drove from MI with a trade in and they honored their offer. There were a couple minor things like steering wheel was more worn than we would have expected given the nice condition of the rest of the car. Small headliner plug interior for convertible top was missing. Other than that it was a smooth transaction.
Love this car
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!






Used
2021 Mercedes-Benz GLS 450 4MATIC
Vehicle information
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Reviews
I was in the market for a used rubicon wrangler, Sherman
I was in the market for a used rubicon wrangler, Sherman dodge had the vehicle I wanted. Upon my arrival I was greeted by Jesse W and from the time I arrived to the time I left in my new vehicle he was very attentive to my every need! I felt like I left with an amazing deal!
Best SUV we've ever owned.
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






Used
2021 Mercedes-Benz GLS 450 4MATIC
Vehicle information
Features
Reviews
Marty Lucas did a fantastic job.
Marty Lucas did a fantastic job. He is very professional and friendly and has a ton of product knowledge. I would highly recommend seeing Marty if you are looking to buy a vehicle. Tony Griffith handled the financing and was also wonderful to work with. The whole experience was great and another highlight is we didn't have to deal with them having added packages on the vehicles.
You get what you pay for
We are in our first five months and I seriously believe all the safety options have kept me out of at least two accidents. The car on the highway practically drives itself while giving me a message. Audio systems are excellent. The 450 GLS makes driving a bit of a joy.






Used
2021 Mercedes-Benz GLS 450 4MATIC
Vehicle information
Features
Reviews
We just bought a high mileage TESLA from star motors.
We just bought a high mileage TESLA from star motors. The entire experience and the car itself was great. Alex can actions as very reliable, open and ready to help always. Payment and shipping were managed in a very honest and trustworthy manner.
Great car!
Luxurious to drive and very quiet riding car. I am very satisfied with the car. The electronices are a bit over whelming at first. Love the car.






Used
2021 Mercedes-Benz GLS 450 4MATIC
Vehicle information
Features
Reviews
Great selection of cars.
Great selection of cars. I bought my Tesla at Affinity and couldn't be happier. After going to a few different places Affinity had the cleanest and by far the best service. I will be back again when the time comes.
Great Electronics and Engineering
This car is state of the art in human factors engineering. It has multiple layers of safety enhancements. Interior is very spacious. The 42 volt battery provides quick acceleration which allows the car to have no lag time when accelerating.






Used
2021 Mercedes-Benz GLS 450 4MATIC
Vehicle information
Features
Reviews
Super happy with my experience.
Super happy with my experience. Drove right off the lot with my new car and no complaints. Have nothing but great words for these guys and definitely zero complains. Check them out for you next car buying experience. Made it all way way back to Des Moines.






Used
2021 Mercedes-Benz GLS 450 4MATIC
Vehicle information
Features
Reviews
Today I purchased a new Volkswagen Tiguan from this
Today I purchased a new Volkswagen Tiguan from this store. I had a pretty good idea of what I wanted, previously having done a ton of my own research. From there I worked with Avery and Sandi who were both knowledgeable and thoroughly answered all my questions. They were patient with my indecision, showing me 3 different trims of the same model to make sure I was entirely happy with my choice, and even helped me figure out how to save the most with financing. The Finance Manager, Jason, was great as well. I feel like he got through the paperwork in record time! All employees I came into contact with were amazing! Very friendly and good conversationalists. I felt like I knew them and they made me super comfortable. I have to say, I actually enjoyed their company and was mostly chatting and laughing, I never felt pressured and didn't feel at all like I wasted a day buying a car. This is coming from someone who does NOT trust salesmen the majority of the time (sorry) and DREADS things like this. This place is fantastic! ⭐️⭐️⭐️⭐️⭐️ I will continue to recommend this store to anyone looking for a trustworthy place to car shop. Thanks for everything, guys!






Used
2021 Mercedes-Benz GLS 450 4MATIC
Vehicle information
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Reviews
Had a great experience picking up my new Jeep Wrangler.
Had a great experience picking up my new Jeep Wrangler. Joe helped me out and they made sure the car was all up to date on service and was in amazing condition!






Used
2021 Mercedes-Benz GLS 450 4MATIC
Vehicle information
Features
Reviews
Great experience with John and Florin.
Great experience with John and Florin. They know their stuff which made this transaction stress free.






Used
2021 Mercedes-Benz GLS 450 4MATIC
Vehicle information
Features
Reviews
Ziegler Land Rover steals buyers money and cars.
Ziegler Land Rover steals buyers money and cars. They sell new vehicles to you and then negligently deliver this to someone else with no any proper documentation. When you request your car or money back they simply kick you out declaring that deal is done. Then they steal your sales tax money and they try to register the stolen vehicle on your name. General manager and new cars sales manager are making at you telling to go to the insurance company. But there is no any insurance because the vehicle wears never delivered. Do not buy any cars from this fat cockroach. They are thief.
Used
2021 Mercedes-Benz GLS 450 4MATIC
Vehicle information
Features
Reviews
Easy buying experience.
Easy buying experience. They were very professional and the whole purchasing process was with one person.
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2020 Mercedes-Benz GLS 450 4MATIC
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2020 Mercedes-Benz GLS 450 4MATIC
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Used
2022 Mercedes-Benz GLS 450 4MATIC
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Mercedes-Benz GLS 450 prices by year
Model year | Prices from | Deals |
---|---|---|
2026 Mercedes-Benz GLS 450 | $93,190 | |
2025 Mercedes-Benz GLS 450 | $76,720 | 9 Great deals |
2024 Mercedes-Benz GLS 450 | $63,985 | 5 Great deals |
2022 Mercedes-Benz GLS 450 | $46,895 | 9 Good deals |
2019 Mercedes-Benz GLS 450 | $16,995 | 5 Great deals |
About the 2021 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 2021 Mercedes-Benz GLS 450 cost?
The 2021 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 2021 GLS 450 is $43,292, with pricing starting at $28,995.
What is the MPG of the 2021 Mercedes-Benz GLS 450?
The 2021 Mercedes-Benz GLS 450 offers up to 20 MPG in city driving and 24 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 2021 Mercedes-Benz GLS 450?
The 2021 Mercedes-Benz GLS 450 compares to and/or competes against the following vehicles:
Is the 2021 Mercedes-Benz GLS 450 reliable?
The 2021 Mercedes-Benz GLS 450 has an average reliability rating of 3.5 out of 5 according to Cars.com consumers. Find real-world reliability insights within consumer reviews from 2021 GLS 450 owners.
Is the 2021 Mercedes-Benz GLS 450 a good SUV?
Below are the Cars.com consumer ratings for the 2021 Mercedes-Benz GLS 450.
- Comfort 5.0
- Interior 4.9
- Performance 3.8
- Value 3.1
- Exterior 4.9
- Reliability 3.5
62% of drivers recommend this car
- Comfort 5.0
- Interior 4.9
- Performance 3.8
- Value 3.1
- Exterior 4.9
- Reliability 3.5
GLS 450 (1 style)
Style |
---|
GLS 450 4MATIC SUV |
Inventory price |
Starting at $76,000 |
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 2021 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.
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