Used 2023 Mercedes-Benz GLS-Class SUV Consumer Reviews
Used GLS-Class for sale
Transmission Blew Out in 12 Months
CarGuy_Cambridge, 01/19/2024
2023 Mercedes-Benz GLS-Class GLS 450 4MATIC 4dr SUV AWD (3.0L 6cyl Turbo gas/electric mild hybrid 9A)
13 of 13 people found this review helpful
I should have heeded the advise of a colleague who warned about serious quality issues with Mercedes brand. Transmission of my new 2023 GLS blew out completely without any warnings in exactly 12 months, leaving me and my wife stranded in the middle of a busy street. They had to order a new transmission and took a total of 3 weeks to get the car back. While it didn't cost anything out of pocket thanks to factory warranty, this is not what I had expected from a $100k MB which at one point used to be synonymous with "high quality and reliability". I am going back to BMWs (I have owned 3 of them for a total of 15+ years) or Audi (owned 1, for a total of 6 years).
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Do NOT buy a GLS450 - The Worst!!!
No More GLS , 06/03/2023
updated 06/12/2025
2023 Mercedes-Benz GLS-Class GLS 450 4MATIC 4dr SUV AWD (3.0L 6cyl Turbo gas/electric mild hybrid 9A)
33 of 36 people found this review helpful
The GLS450 2023 just suddenly stalls while driving - loses all power - they don't know how to fix. It stalled out twice on consecutive days in first week of ownership! Nearly killed us - going to try BMW X7. We had a previous 2020 GLS450 that did the same thing 10-12 times a year and they never were able to fix it. The GLS is still the worst and most dangerous SUV’s we have ever owned! The 2024 BMW X7 is amazing - smooth, quiet, reliable, powerful and amazing gas mileage (surprisingly) averaging 27mpg! - if you drive or try a new X7 you will never consider a Mercedes again for a SUV
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2023 Mercedes-Benz GLS-Class for sale near you
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- GLS 450 4MATIC 4dr SUVMSRP: $61,595109 mi away
- GLS 450 4MATIC 4dr SUVMSRP: $49,990156 mi away
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Great Ride Terrible Tech.
O Xi Sav, 08/15/2023
updated 12/11/2024
2023 Mercedes-Benz GLS-Class GLS 580 4MATIC 4dr SUV AWD (4.0L 8cyl Turbo gas/electric mild hybrid 9A)
17 of 18 people found this review helpful
Been driving my GLS for a little over a year now. 20,000 miles My first comment is, wow! Did not think the V6 in my 2018 was lacking until I got the V8 in the 580. Truly impressive acceleration. Just had a GLE for a loaner and yeah, the acceleration is real. The real reason I prefer the GLS is the ride. For a vehicle with nearly 7500 lb GVWR it rides marvelously. The road noise and engine noise is minimal. I prefer the GLS450 interior to the 580, but the quality is great on both. At highway speeds of 80 mph averaged 23 MPG. MB marginally improved their tech, but it is still significantly lacking given the price point. CRAZY THAT ANDROID AUTO MUST BE WIRED. MY LOANER GLE HAD WIRELESS ANDROID AUTO AND IT WAS GOOD, SHAME MB DOES NOT THINK IT IS NEEDED ON THEIR HIGH END PLATFORM WHY HAVE A WIRELESS CHARGER THEN HAVE TO PLUG IT IN TO USE ANDROID AUTO, IT IS ACTUALLY EMBARRASSING. Touch screens and finally a real use for the mouse pad. When driving the touch screen is a reach, I'm 6'1", and the pad does allow for easy swiping. The learning curve is real, and takes time to find things, but overall it very customizable. Tech start up is painfully slow, sometimes taking close to 30 seconds for the system to boot up. JUST GOT NOTICE THAT I HAVE TO PAY FOR THEIR HALF ASSED APP TO START AND LOCK MY CAR! NOT THAT $15 / MONTH IS A WORRY BUT TO EXTORT ME TO USE AN APP THAT ONLY WORKS OCCASSIONALLY IS RIDICULOUS. HAVING TO PAY TO REMOTE START OR LOCK YOU VEHICLE IS BUSH LEAGUE, THE CAR WAS $100K+. My only complaint on the drive side, and it is enough to tell anyone to take a highway drive before you buy, the lane keeping system is jarring to the point of sickening. If you stay left while passing a vehicle or missing an object in the road it will throw you back into what you were avoiding. You cannot turn off the lane tracking without turning off the warning as well. So, in Germanic fashion, we know better than you, you will use the car the way we say is best, even if you have good reason. If one could keep the warning and drop the harsh lane correction it would be great. The cruise is no longer a speed keeping system, it is an auto drive system. I personally have issue giving control to the machine, and there are times when I would like to drive the car. I was exhausted after my first trip fighting the car and how it liked to drive over how I like to drive. Drive 800 miles over holiday and kept cruise off most of the time because it is actually more work to use the cruise than not. Seems cool at first but if you use cruise a lot I would look carefully at how cruise has changed. One thing that I do find odd is you cannot lift the drivers windshield wiper to clean under it, or wipe things off the blade, without hitting the hood and stopping it. I'm not sure how you would change wiper blades like this. New issue that I found is if you are an aggressive driver, guilty as charged, the collision avoidance system is so sensitive it is almost dangerous. My car stopped me in an opposing lane thinking I was going to crash which almost caused a crash. I hate to turn it off because I can see the value but it it needs refinement. Maybe the car is just smarter than me, and as much as I hate the lane system, the car is a great ride, but don't expect much from the tech.
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Reliability
Raju, 07/02/2023
2023 Mercedes-Benz GLS-Class GLS 450 4MATIC 4dr SUV AWD (3.0L 6cyl Turbo gas/electric mild hybrid 9A)
15 of 17 people found this review helpful
GLS 450: The only good thing is stability and comfort. But feels like driving a very heavy vehicle. Poor electronics. I have a Toyota Highlander it has 200% better electronics than this 2023 GLS450. Yesterday, suddenly, while I was driving on a highway, got a battery warring flash, after a few minutes’ vehicle was stopped, could not restart for 30 minutes. This incident completely broke my confidence on this vehicle. I have invested $100k on this vehicle. This new car has only 3500 miles on it so far. We have BMW X5, compared to this BMW, it’s completely worthless to invest on this model, probably on this brand: Benz. I have big doubts about the reliability of this vehicle.
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GLS smooth as glass
Dano, 03/07/2024
2023 Mercedes-Benz GLS-Class GLS 580 4MATIC 4dr SUV AWD (4.0L 8cyl Turbo gas/electric mild hybrid 9A)
1 of 1 people found this review helpful
Love the GLS. Great ride and performance is amazing. Only question is the driver assist package, don’t like it for driving in the mountains as it slows the car down for some corners and the lane keep is off for a twisting two lane road. The technology is almost too good. It is a great SUV and fun to drive
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