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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
Harwood Heights, 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
2020 Mercedes-Benz GLS 450 4MATIC
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Reviews
This is my 2nd car from Grand Subaru.
This is my 2nd car from Grand Subaru. Jelissa Taboada made the whole process painless.
Great Vehicle
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.






Used
2020 Mercedes-Benz GLS 450 Base 4MATIC
Vehicle information
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Reviews
I am so happy with my new 2022 Tesla Model S Plaid that I
I am so happy with my new 2022 Tesla Model S Plaid that I bought from Highline. Justin took care of me the whole time and even Vince helped me out with a few other things. Thank you Highline!
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
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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.
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
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Reviews
Worked with John B for a new Bentley.
Worked with John B for a new Bentley. He was quick and efficient, answered all my questions and the car is in mint condition. Car was fully serviced and I love it
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
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Reviews
Jason picked me up personally and worked out a great deal
Jason picked me up personally and worked out a great deal for me on the car I wanted I really appreciate the great service
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
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Money Carlos is the best!
Money Carlos is the best! Takes care of his customers and loves veterans! He makes you feel important and not just another number. Thanks again!

Used
2020 Mercedes-Benz GLS 450 4MATIC
Vehicle information
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Reviews
I am writing to express my sincere appreciation for the
I am writing to express my sincere appreciation for the outstanding service I received during my recent visit to your dealership. As a loyal customer who has now purchased three cars from your establishment, I felt compelled to share my positive experience with you. The team at Ultima motors truly embodies the meaning of exceptional customer service. From the moment I walked in, I was greeted by amazing staff who made the entire car buying process incredibly smooth and hassle-free. Not only did they streamline the process, but they also managed to secure a fantastic deal for me. I must particularly thank Chris from the Sales department for his professionalism and helpful demeanor throughout the transaction. His dedication to ensuring customer satisfaction is truly commendable, and I will not hesitate to recommend him to family and friends who are in the market for a new car. Furthermore, I was impressed by the overall organization and efficiency of the management . It is evident that the entire team is committed to delivering prompt and high-quality service to every customer. The quick and professional service I received further added to the overall positive experience, solidifying my decision to continue purchasing cars from your dealership in the future.

Used
2020 Mercedes-Benz GLS 450 4MATIC
Vehicle information
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Reviews
Just took delivery of my second purchase from Ultimo in 4
Just took delivery of my second purchase from Ultimo in 4 and a half years. Both times they treated me with respect and transparency. Their service department is easy to work with as well. I live out of state but visit the area quite often due to work and every time I am in I get my maintenance service done there as my local Mercedes dealer charges an arm and a leg even for an oil change. I can say they have a lifelong customer in me. Highly recommend their sales department, Alan, Tash, Chris. Sean in finance is easy and helpful and Nick in service as well. They all treat me like I am part of their team even though I am just another customer from 2 states over.

Used
2020 Mercedes-Benz GLS 450 4MATIC
Vehicle information
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Reviews
Everything was great .
Everything was great . Andrew was great. I had no problems . All the people I meet were amazing.
Used
2020 Mercedes-Benz GLS 450 Base 4MATIC
Vehicle information
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I bought a 2021 Mustang Mach E for my son and I thought
I bought a 2021 Mustang Mach E for my son and I thought it would be more complicated getting the $4000 rebate but it ended up taking 2 minutes. Highly recommend if you are trying to get the IRS rebate on EV’s.
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2019 Mercedes-Benz GLS 450 4MATIC
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Mercedes-Benz GLS 450 prices by year
Model year | Average price | Deals |
---|---|---|
2026 Mercedes-Benz GLS 450 | $99,917 | |
2025 Mercedes-Benz GLS 450 | $92,063 | 17 Good deals |
2024 Mercedes-Benz GLS 450 | $77,180 | 10 Good deals |
2023 Mercedes-Benz GLS 450 | $63,618 | 6 Good deals |
2022 Mercedes-Benz GLS 450 | $53,974 | 7 Good deals |
2021 Mercedes-Benz GLS 450 | $43,361 | 10 Good 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 $36,578, with pricing starting at $21,888.
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.