The GLE loses speed quickly.
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GLE 350
The GLE loses speed quickly.
Hi all.
Yesterday I was driving down the highway and noticed that when I release the gas pedal, the car quickly loses speed, even if it goes down a slight hill, it feels like the engine brakes.
Attaching a video, who owns a GLE v167 350 4matik, can you tell me if this is normal or not? And in what direction to dig?
Yesterday I was driving down the highway and noticed that when I release the gas pedal, the car quickly loses speed, even if it goes down a slight hill, it feels like the engine brakes.
Attaching a video, who owns a GLE v167 350 4matik, can you tell me if this is normal or not? And in what direction to dig?
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From: Central Indiana
2021 GLC 300 4Matic
What options does your 350 have? Do you have Distronic? Even if you don't, I think the basic vehicle safety features, like emergency braking, will automatically slow you down especially if there are vehicles in front of you or if you're going downhill. I do not believe this is an issue unless you're saying it's extremely aggressive but then again, safety features.
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GLE 350
I don't have a distronic, and exactly the same situation happens on a completely empty road and the strangest thing when driving downhill, the impression is that the engine or transmission brakes ... even when I drive in ECO mode and it shifts to a neutral speed, still something brakes.
It doesn't feel like brakes, the wheels are spinning fine I think.
It doesn't feel like brakes, the wheels are spinning fine I think.
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From: Boston Area
2021 Mojave Silver E450, 2024 Black on Black Jaguar F-pace P400, 2011 335d (RIP), 2010 E350 (sold)
I don't have a distronic, and exactly the same situation happens on a completely empty road and the strangest thing when driving downhill, the impression is that the engine or transmission brakes ... even when I drive in ECO mode and it shifts to a neutral speed, still something brakes.
It doesn't feel like brakes, the wheels are spinning fine I think.
It doesn't feel like brakes, the wheels are spinning fine I think.
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From: Boston Area
2021 Mojave Silver E450, 2024 Black on Black Jaguar F-pace P400, 2011 335d (RIP), 2010 E350 (sold)
Not sure what year your GLE is but it probably will go into glide/sail mode when in Eco (Green surrounded D instead of D9) this would give you an idea how much the gearing is affecting deceleration because when "gliding" it basically shifts into neutral.
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Out Of Control!!
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From: San Francisco Bay Area
2019 C63CS
Looks pretty normal. What were you expecting and what are you comparing it to? Yes, there is engine braking. As long as the transmission is in gear and you take the foot off the throttle the engine will slow you down as the fuel delivery is cut off. In 9th gear the effect is the smallest because of the high gear, but the engine will still slow you down. Completely normal. Then as said above, an SUV has the aerodynamics of a shipping container. Huge frontal area compared to a regular car. and even worse compared to a streamlined sports car, so all that air you are pushing along in front of you will slow you down.
Also, I see you are in Europe. What GLE 350 do you have exactly? At least on the German configurator I only see the GLE 350 de, which is a hybrid diesel. So if yours is a hybrid, then when you take your foot off the throttle there will be energy recuperation, which will slow down the car while converting your kinetic energy into electricity and stuff it into the battery.
EDIT: Forgot to mention Efficiency mode. If you put DYNAMIC SELECT in Efficiency mode, then when you take the foot of the throttle above certain speeds it will enter glide mode, during which the transmission is decoupled from the engine and the car with glide under its own momentum and only losing speed due to aerodynamic drag and the remaining friction in the drivetrain, but there will be no engine braking.
Also, I see you are in Europe. What GLE 350 do you have exactly? At least on the German configurator I only see the GLE 350 de, which is a hybrid diesel. So if yours is a hybrid, then when you take your foot off the throttle there will be energy recuperation, which will slow down the car while converting your kinetic energy into electricity and stuff it into the battery.
EDIT: Forgot to mention Efficiency mode. If you put DYNAMIC SELECT in Efficiency mode, then when you take the foot of the throttle above certain speeds it will enter glide mode, during which the transmission is decoupled from the engine and the car with glide under its own momentum and only losing speed due to aerodynamic drag and the remaining friction in the drivetrain, but there will be no engine braking.
Last edited by superswiss; May 20, 2023 at 02:09 PM.
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GLE 350
Thank you for your comprehensive answer.
I have an American version of the GLE 350 v167 4matik, it's not a hybrid or diesel - it's a turbocharged 2.0 gasoline.
This is my first Parkett, I've driven sedans before, so nothing to compare it to.
I thought it should somehow take longer to coast. I mean, don't go to the dealer to check and just drive in eco mode on the highway?
I have an American version of the GLE 350 v167 4matik, it's not a hybrid or diesel - it's a turbocharged 2.0 gasoline.
This is my first Parkett, I've driven sedans before, so nothing to compare it to.
I thought it should somehow take longer to coast. I mean, don't go to the dealer to check and just drive in eco mode on the highway?
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From: USA
2021 GLE450W4 SUV
It's completely normal. The speed loss is faster at 140 because the air drag is higher at higher speeds, plus the mechanical energy loss in the drivetrain is also higher at faster speeds.
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From: Boston Area
2021 Mojave Silver E450, 2024 Black on Black Jaguar F-pace P400, 2011 335d (RIP), 2010 E350 (sold)
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From: Boston Area
2021 Mojave Silver E450, 2024 Black on Black Jaguar F-pace P400, 2011 335d (RIP), 2010 E350 (sold)
Yea, that looks normal. At 130 km/h it will slow faster simply because of aerodynamic drag (washing machine analogy from previous comments) It is also a perfect example showing that the car detects slower moving traffic a couple seconds after it starts. She switched from "glide" to D9 when you approached the truck and then went back into "glide" after the truck changed out of your lane. While in D9 I expect your GLE to have decelerated faster than when it was gliding. Did you notice the change?
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GLE 350
Yea, that looks normal. At 130 km/h it will slow faster simply because of aerodynamic drag (washing machine analogy from previous comments) It is also a perfect example showing that the car detects slower moving traffic a couple seconds after it starts. She switched from "glide" to D9 when you approached the truck and then went back into "glide" after the truck changed out of your lane. While in D9 I expect your GLE to have decelerated faster than when it was gliding. Did you notice the change?
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2019 C63CS
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From: SWFL
2024 GLE 450, 2009 SLK 300
You can see the motor downshift in the video, it doesn't look like it is coasting. It also starts to slow more rapidly when a truck pulls over in front of you. Are you sure the distronic is turned off? Regardless, I wouldn't be concerned. You can always just put the transmission in neutral and see how the vehicle slows then.
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GLE 350
You can see the motor downshift in the video, it doesn't look like it is coasting. It also starts to slow more rapidly when a truck pulls over in front of you. Are you sure the distronic is turned off? Regardless, I wouldn't be concerned. You can always just put the transmission in neutral and see how the vehicle slows then.
I'll try to put it in neutral when I'm on the highway.
Maybe some new firmware needs to be flashed on the car?
Is there nothing you can do about it? What if it slows down smoother?
Last edited by yabloky; May 23, 2023 at 02:50 AM.
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2022 GLE 450
consider it as a sign of a very healthy engine and transmission. The piston rings are seated properly. Our 450s are 6600 lb beasts.
i have a 11 year old volvo xc60 (also inline 6, 3L turbo but only 4000 lb) and when the oil is fresh it really slows (engine brakes) when coasting. It's 2000 pounds lighter.
the trans takes a while to adapt just like any new car. Trans flush every 60k miles. Oil change every 5k miles.
Plus the 450 has the eq boost thing that takes energy from coasting to charge the battery.
i have a 11 year old volvo xc60 (also inline 6, 3L turbo but only 4000 lb) and when the oil is fresh it really slows (engine brakes) when coasting. It's 2000 pounds lighter.
the trans takes a while to adapt just like any new car. Trans flush every 60k miles. Oil change every 5k miles.
Plus the 450 has the eq boost thing that takes energy from coasting to charge the battery.
Last edited by EL-34; May 24, 2023 at 12:41 AM.
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GLE 350
I have a regular 350 4matik )
Without EQ boost )
But I get the point. I just thought that the car should not so obviously turn nose when you release the gas pedal, and somehow smoother it all should happen, but if it is so for all - then it's okay.
Without EQ boost )
But I get the point. I just thought that the car should not so obviously turn nose when you release the gas pedal, and somehow smoother it all should happen, but if it is so for all - then it's okay.
