GLK 350 Real World Gas Mileage
Member
Joined: Apr 2014
Posts: 81
Likes: 0
14 GLK 250 BT
I will be a convert! Will be returning the loaner glk250 after 3 days of road test and I am in love! The thing pulls really strong. The gas needle barely moved compared to what I will see on my gas glk. The diesel is like a train....starts slowly and when it gets to it's momentum it will just pull and pull and pull some more. Drove it in the highway and one of the thing I noticed is that when you are at around 110 kph and want to pass a long rig you need to step on the gas a little bit harder to get up into speed not like on the v6 gas version that when you step on the gas it will just quickly sprint on the same speed but boy the torque of the diesel is just there when you need it it is just when you are driving already fast and want to go even faster quickly you just need to push the gas pedal a little harder. I also feel the diesel version a little lighter to steer while maneuvering on parking spots. I still like the pre-facelift interior though, boxy and nothing round inside. Other than that the feel and built is exactly the same as the gas version.
Last edited by Rdub; Jul 14, 2014 at 06:10 PM.
Senior Member
Joined: Jul 2008
Posts: 290
Likes: 0
From: Toronto
BMW M5 + E55 AMG
The 350 is utterly atrocious when it comes to fuel economy. It's downright deplorable. I mean, my 5.0L V8 powered sports sedan gets better fuel economy than a GLK350 driven by my 50yr old mother to work 10km a day.
We have nothing but regrets, should've waited another year and bought the diesel.
We have nothing but regrets, should've waited another year and bought the diesel.
Member
Joined: Sep 2013
Posts: 201
Likes: 5
From: Arizona and Washington
2014 GLK350
The 350 is utterly atrocious when it comes to fuel economy. It's downright deplorable. I mean, my 5.0L V8 powered sports sedan gets better fuel economy than a GLK350 driven by my 50yr old mother to work 10km a day.
We have nothing but regrets, should've waited another year and bought the diesel.
We have nothing but regrets, should've waited another year and bought the diesel.
The GLK's six I imagine will not be around when the "new" GLK comes out. I'm guessing a turbo four of some sort.
Member
Joined: Feb 2012
Posts: 193
Likes: 4
From: Denver
2014 CLS550 4Matic; 2010 E550, 2007 SL550
2013 GLK350. Came from a 2011 C300. Three data points, all from math, not from the dash:
1 - Drive to work - 75% highway, 70 miles round trip, speeds between 80mph and stop/go. Average mileage both ways ~26mpg. In the C300, it was about 31mpg.
2 - Alternate drive to work - all surface streets, 66 miles round trip. Average mileage both ways ~24mpg. In the C300 with no ECO, it was 21mpg.
Shutting down the engine when stopped makes a big difference.
I am actually surprised at the efficiency of the GLK. Around town it gets about the same as my wife's E350. It's not until you get above about 70mph that the mileage really starts to suffer. And in all commute routes the GLK gets about the same mileage as our 2005 Z4.
1 - Drive to work - 75% highway, 70 miles round trip, speeds between 80mph and stop/go. Average mileage both ways ~26mpg. In the C300, it was about 31mpg.
2 - Alternate drive to work - all surface streets, 66 miles round trip. Average mileage both ways ~24mpg. In the C300 with no ECO, it was 21mpg.
Shutting down the engine when stopped makes a big difference.
I am actually surprised at the efficiency of the GLK. Around town it gets about the same as my wife's E350. It's not until you get above about 70mph that the mileage really starts to suffer. And in all commute routes the GLK gets about the same mileage as our 2005 Z4.
MBWorld Fanatic!
Joined: Dec 2003
Posts: 1,283
Likes: 126
From: Central Coast, CA
2020 X7 xDrive40i, 2016 X3 sDrive28i
I've had a extended loaner 2014 GLK350 4matic for a few days while they work out a few kinks on my 2013 E350 4matic wagon.
On the GLK350, around town I'm seeing around 15 mpg with eco on. (hate that feature). On similar environment with my E350 wagon I get around 18 mpg with no eco mode. Both has the same 3.5 V6 and 4matic. I think they weigh around the same as well. GLK is smaller than the E wagon in terms of interior space and only seats 5 instead of 7 in the wagon.
the engine does feel stronger in the GLK than the E wagon. especially off the line. Maybe they tuned it differently or the transmission has different gearing ratios. the E is more relaxed off the line. That could explain part of the fuel consumption differences.
The highest I've ever gotten in my wagon was 31mpg on a 400 mile drive at 65mph. Typically on my 200 mile weekend trips, I average around 28mpg going 75mph. I suspect the same drive will get me low to mid 20's in the GLK.
On the GLK350, around town I'm seeing around 15 mpg with eco on. (hate that feature). On similar environment with my E350 wagon I get around 18 mpg with no eco mode. Both has the same 3.5 V6 and 4matic. I think they weigh around the same as well. GLK is smaller than the E wagon in terms of interior space and only seats 5 instead of 7 in the wagon.
the engine does feel stronger in the GLK than the E wagon. especially off the line. Maybe they tuned it differently or the transmission has different gearing ratios. the E is more relaxed off the line. That could explain part of the fuel consumption differences.
The highest I've ever gotten in my wagon was 31mpg on a 400 mile drive at 65mph. Typically on my 200 mile weekend trips, I average around 28mpg going 75mph. I suspect the same drive will get me low to mid 20's in the GLK.
MBWorld Fanatic!
Joined: Sep 2014
Posts: 1,051
Likes: 216
From: LaLaLand
2015 GLK350 & 2020 C300
I am consistently getting 32 MPG / 7.3L/100KM under my driving conditions. Only possible when there is no traffic in Los Angeles through my 30 minute morning commute.
Junior Member
Joined: Jan 2016
Posts: 44
Likes: 2
GLK 350 4 Matic
Both of them beat the GLK range, thanks to the GLK's puny gas tank. Both also have engines with the correct number of cylinders.
MBWorld Fanatic!
Joined: Sep 2014
Posts: 1,051
Likes: 216
From: LaLaLand
2015 GLK350 & 2020 C300
Alas, this always made me question why no AMG was ever made for the GLK. Imagine a GLK63 AMG V8! They put AMG V8s in ridiculous things like the R63 minivan and G63 6x6.
Even the ****ty CLA and GLA got an AMG version but not us
Even the ****ty CLA and GLA got an AMG version but not us
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Newbie
Joined: Jul 2017
Posts: 4
Likes: 5
GLK 250
2015 GLK250 Diesel
40,100 Miles. 31.8 MPG AVERAGE for all 40,100 miles! Why would you want to own a GLC or GLK350?
On highway, I've gotten 40 MPG on a long, straight drive.
Now, why did they stop selling these??
40,100 Miles. 31.8 MPG AVERAGE for all 40,100 miles! Why would you want to own a GLC or GLK350?
On highway, I've gotten 40 MPG on a long, straight drive.
Now, why did they stop selling these??
Junior Member
Joined: Mar 2018
Posts: 46
Likes: 2
2015 GLK350
I average 23 with mixed highway and city. on a 2015 GLK350 4Matic. Coming from a manual trans FJ cruiser which is about the same weight (surprisingly) and a little less HP which averaged 16 in the same conditions. I'll take it. I do miss my pig sometimes though.
