Gliding Mode
I can easily get 36 - 41 mpg when driving on highways.
My June 18 W213 now has 3,000 KMs on the clock and so far I am pretty pleased but I am seeing some oddities which I cannot explain but some of you might be able to shed light on. Before I describe the oddities and ask questions, please note that I leave my house at 6:40am every weekday drive 40kms to work (no traffic). I also leave the office at 5:00pm when there is usually traffic and take the same route home (90% highway)
- Does the Engine Auto Stop/Start setting influence whether Gliding Mode is turned on or not. I have seen Gliding Mode with Auto Stop/Start at the on and off positions whilst in E driving mode. I had previously read somewhere that the Auto Stop/Start was also a switch for Gliding mode - not sure if that is true.
- When the car in in E mode, the Gliding mode on some days never gets turned on at all but on other days, it does. As mentioned above, I drive the same route each day at the same speeds ( 70 to 100 km/hour ) with a very gentle foot. Why is this ? same route, same speeds, dry weather, same temps ( 25 Deg C ) and no traffic.
- On the way home from the office, Gliding Mode nearly always engages when the road is ~ 15 meters clear ahead regardless of the incline or even light traffic ahead. What baffles me is the road conditions on the way to work are close to perfect for gliding but the car only engages 40% of the time where I would expect it to whereas on the way home, it engages closer to 80% of the time where I would expect it to.
- When I turn off the Auto Start/Stop hoping it disables Gliding mode at some sections on the way home, it does indeed turn off Gliding mode.
This is a bit baffling.
Oddities aside, I am seeing great economy from my W213 - petrol. It's matching the economy of my wife's car which has a smaller engine and 50% less HP and 25% less weight.






Entire trip - average speed 63 mph, MPG 34.6 - that's crazy, this a 4,000+ lb. car. with my wife's 2010 ML350 I'd be lucky to average 19MPG. I now drive in ECO whenever I'm on the highway - I am going to start to track the MPG difference between ECO and Comfort mode, but I seem to recall the other times I went to Philly the average MPG was somewhere around 29 MPG,
The more I drive this car the more I love it!
have since read owner's man. about Gliding mode
Entire trip - average speed 63 mph, MPG 34.6 - that's crazy, this a 4,000+ lb. car. with my wife's 2010 ML350 I'd be lucky to average 19MPG. I now drive in ECO whenever I'm on the highway - I am going to start to track the MPG difference between ECO and Comfort mode, but I seem to recall the other times I went to Philly the average MPG was somewhere around 29 MPG,
The more I drive this car the more I love it!
have since read owner's man. about Gliding mode
The Best of Mercedes & AMG




- Engine: Eco
- Steering: Sport
- Ride: Comfort
My best mileage has been on Long Island for a 50 mile trip at 65/75 mph: 36 mpg. I consistently get 30/31 driving to Vermont and 32/33 on the return trip with cruise control set between 72 and 78 mph - 254 miles each way. Again, pretty amazing for a Turbo V6 engine!

- Engine: Eco
- Steering: Sport
- Ride: Comfort
My best mileage has been on Long Island for a 50 mile trip at 65/75 mph: 36 mpg. I consistently get 30/31 driving to Vermont and 32/33 on the return trip with cruise control set between 72 and 78 mph - 254 miles each way. Again, pretty amazing for a Turbo V6 engine!




In cruise control, only on long down hill stretches does gliding work. So basically for all intents and purposes Gliding mode does not engage in cruise control.
In the past I may have posted differently as to gliding mode and cruise control. On recent trips I have watched to see if gliding mode (indicated by a green "D") is engaged and it hardly is, so I stand corrected.
I have used eco mode since the car was new in 2018. Glide only works when cruise is not engaged. It operates when you get off the throttle.
In other words, if you are driving along and decelerate using gentle braking from say 70 to 50, then want to glide... It won't do it. You have to touch the throttle for a second or two then lift off.. Hey presto, it glides again.
As for mpg... Just amazing ....I regularly get over 50mpg, and can get 70 mpg on a long motorway journey at steady speeds of 70mph.




Sorry,,, couldn't resist.







