Hello everyone . I upgraded from a Porsche macan S to a 2019 GLC 63 and now I'm regretting such a huge upgrade.. Mostly because I didn't realize how bad the mpg is on this car. It says 16/22 but I'm only getting 8mpg so far driving on comfort mode.. Not that I can't afford it but I'm so bummed that I'm spending so much unnecessary money. Is that gas mileage normal for this vehicle ? 8mpg??

 

Wow. That’s pretty low. I’m getting 17mpg, city driving only and in sport mode.

 

i have only had mine 24 hours and i saw that. i am also in eco mode. But i don't think those numbers are right. fill up the tank and see how many miles you actually get in mix use.

I will be driving Houston to Dallas tomorrow for 300 miles so I will get a good idea of my highway miles... even though i will be doing more 90mph than 75mph

 

 

me too. that is a lot more functional than the Austostart/stop.

 

Is there an eco mode for the 63? How do u switch to that? I thought there was only comfort mode. Please let me know what your average mpg turns out to be by the end of that drive Thanks !

 

There is a silver toggle switch on the center console that you can push forward or back to adjust the driving mode.

 

Damn 8 MPG?!

 

 

I'm getting 18.9 mpg on my GLC63 which I daily drive to work. About 5800 miles so far, but I'm pretty pleased with the fuel economy considering the power that lurks inside. Admittedly I keep it on comfort mode most of the time, but I have 'played' with the car with Sport + mode to show friends/family what this does from a standstill or show off the awesome exhaust. Give the car some time, and the mpg should steadily increase under normal driving.

 

 

Comfort with autostart left active is what I was calling eco mode. it would be irrelevant for highway driving. but theoretically, they shutdown at stops should help for 1-2mpg in daily errands

 

 

i did get 17+ mog highway going 85mph for 300 miles.


confort mode, cruise control at 85



comfort mode, exhaust open. cruise control at 85. possibly caused me 1mpg. not sure.

 

I also get 8mpg getting from Brooklyn to Queens everyday, it's a short drive and the car is still new so I'm still not over the S+ fun. Still dont expect it to get that much better. Still coming from an X3 I have zero regrets, I'm also in an oil related business so I'm just helping myself out.

 

I don't know Sheila Tan, but 7 to 8 MPG is extremely bad IMO. Are you using high octane and not the regular? Could it be just a bad tank of gas? Even though your car has a powerful engine, that seems insanely low for me.

 

What type of fuel do you use? How far is your commute? Those MPG readers on the car are not usually accurate on short jaunts. What are your driving habits?

 

Hang in there. Mileage gets better with some miles on the engine. Also, there is no ECO mode per se on the 63. Mine started about 10 on the first tank and I'm up to about 15 with 500 miles. Cant wait to cover a couple of thousand where things should improve

 

Mileage is pretty meh right off the bat, but 8 MPG doesn't sound right. Are you driving in really heavy traffic?

 

You don't buy an AMG for fuel however I do think that 8 MPG is nuts, my old G65 gave me better mileage. I would go back to the dealer and see what they say.

 

Dang it, I really wanted Heads Up Display. Was not able to get it added to my build.

 

Just finished 800 mi round trip for Scottsdale Az to Newport Beach Ca. Hiway 21.1 mpg 80-85 mph. Driving stop and go in the OC 16.8 mpg. Proly will improve as car only has 1100 miles.
8 mpg is what I get on the track in my GT-S!

 

950 miles. went up to 19+. highway road trip with cruise set at 88mph

 

No, it was my first tank of gas that was provided by the dealer It has gotten better and I'm at 15mpg on my second tank of gas

 

Premium but that was the first tank of gas that the dealer provided. I'm doing better with my second tank at 15 mpg stop and go