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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
Mountain Park, GA
- 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
Highly recommend and will return for future purchases.
Highly recommend and will return for future purchases. Beautiful facility, good selection of vehicles, and great customer service. Will utilize this dealership for all service needs.
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
Features
Reviews
Just got my new Cadillac Escalade from Hennessy Cadillac
Just got my new Cadillac Escalade from Hennessy Cadillac and I love it so much! Thank you Reginald Batts for making this experience 5 star all the way. If you are interested in a Cadillac I highly recommend working with Reggie. He’s the best!
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
Vehicle information
Features
Reviews
Great Customer Service and Assistance
The salesman (Jerrel) was great to work with because he helped me while he was there Orr if he was off that day. He got me a car from another store then found out there were problems and found me a car around the same price range that was newer and less miles. Thanks for everything!
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
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
Chris Edwards was great to work with!
Chris Edwards was great to work with! He was never pushy, very helpful, and easy to talk to. We appreciated how quickly he was able to move this normally daunting process along. If you stop by Troncalli, definitely ask for Chris Edwards!
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
Vehicle information
Features
Reviews
Customer Service
Victoria in the business office provided awesome customer service. Thank you Victoria. You ROCK! Needed information on my extended service plan because my vehicle was disabled and I did not have the paperwork on me . She took the time to find the information for me.






Used
2021 Mercedes-Benz GLS 450 4MATIC
Vehicle information
Features
Reviews
a rare experience and quality, Honesty.
Thank you, Justin O., for your honesty, which I have found a very rare quality for auto dealerships. Because of your honesty, we did not purchase the Range Rover. Thus, you have save me money and arguments with my wife.






Mercedes-Benz Certified
2021 Mercedes-Benz GLS 450 4MATIC
Vehicle information
Features
Used
2021 Mercedes-Benz GLS 450 4MATIC
Vehicle information
Features
Reviews
Had a great time with James; he and his team were very
Had a great time with James; he and his team were very helpful. Always go here whenever I need a repair, they always do a great job helping me out.






Used
2021 Mercedes-Benz GLS 450 4MATIC
Vehicle information
Features
Reviews
Such an easy car buying experience, I live in the
Such an easy car buying experience, I live in the Northeast never even considered having to fly out to see the car. Only bump in the road was waiting for car to ship as it was delayed due to 3 day holiday weekend which I can understand. I would definitely recommend to my family and friends






Used
2021 Mercedes-Benz GLS 450 4MATIC
Vehicle information
Features
Reviews
Overall it was a good deal for me.
Overall it was a good deal for me. The dealer made promises and kept them. The Tesla is great! The price was good. However, I felt the dealer fees were ridiculous and they insisted I give them thousands above the actual registration and taxes. Though I was able to recover the excess taxes/registration withheld, it felt very much like the used car salesman treatment. I would recommend the dealer, but be prepared to play reindeer games. If you do not like these games, buy your used Tesla directly from Tesla.
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Mercedes-Benz GLS 450 prices by year
Model year | Average price | Deals |
---|---|---|
2026 Mercedes-Benz GLS 450 | $101,395 | |
2025 Mercedes-Benz GLS 450 | $97,534 | 3 Good deals |
2024 Mercedes-Benz GLS 450 | $75,964 | 11 Good deals |
2022 Mercedes-Benz GLS 450 | $52,657 | 5 Good 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 $41,253, with pricing starting at $28,751.
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
Compare 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.