GLK-Class (X204) Produced 2008-2014

Fuel Consumption L/100Km and MPG

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Old 03-27-2009, 12:50 AM
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2020 CLA 250 4Matic Black
Fuel Consumption L/100Km and MPG

I am hoping that other GLK owners will post their fuel economy or non economy in this thread and we should update every so often.

Ok after 1,453.3KM and 263.594 Litres of fuel (I included the full tank the dealer put in)

6 visits to the Gas Station filled up at 1/2 tank or just under

13.59L/100Km 21.01 MPG (Canadian Gallon)
Old 03-27-2009, 09:14 AM
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GLK 350 / Porsche 993
that's not 21 that's 17 mpg for US

What's canadian gallon?

13.59/3.78=3.69 gallons per 100km

100km/1.62=62 miles

62/3.69=17.3 mpg
Old 03-27-2009, 12:26 PM
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Leslie, are you doing mostly Highway, City or combination of both?
Old 03-27-2009, 03:05 PM
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528i, GLK
" after 1,453.3KM and 263.594 Litres of fuel (I included the full tank the dealer put in) "


if you do conversion based on that, you are looking at 13mpg.

What does it say on your trip computer? That should tell you exactly what the car is doing since reset.

edit: also, remember that fuel consumption will get better over time, its usually below advertised in the beginning.

Last edited by webada; 03-27-2009 at 03:24 PM.
Old 03-27-2009, 06:59 PM
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Originally Posted by Baby G
Leslie, are you doing mostly Highway, City or combination of both?
I would say its about 40% Highway and 60% City I did take a road trip a week ago which was mostly highway.
Old 03-27-2009, 07:02 PM
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I know the Canadian Gallon is bigger than the US gallon. What I use to calculate fuel economy is how many litres to full tank and how many Km driven. I dont think the onboard system is an accurate indicator. When you first start it up you get like 11.7 L/100Km. I am going to change to miles for a while to see if what it gives.
Old 03-27-2009, 07:08 PM
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yea they way I do it is fill up start trip computer, see how many miles I put since last fill and how many gallons I need to fill it up again and then do the calc.
Old 03-28-2009, 12:02 AM
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Originally Posted by Leslielp
When you first start it up you get like 11.7 L/100Km. I am going to change to miles for a while to see if what it gives.
hmm, never noticed that, gotta check that out tomorrow.
Old 03-28-2009, 12:04 AM
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my bmw is dead on with comp calculation, I did the gal. pumped into tank and against miles driven since reset, its same with comp.

I've yet tried to observe glks.... i'll give it few more hundred miles before any attempt...
Old 03-29-2009, 01:59 PM
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if i am calculating the correctly works out to something like 18 L/100. Way over the estimated. Hopefully that is just the break-in/heavy foot period.
Old 04-06-2009, 01:22 PM
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2008 GL 320, 2007 Silverado LTZ C3500 Duramax Turbo Diesel
So, what kind of MPG are people actually getting? I really like the looks of the GLK, but I noticed the EPA is 16/21. I was expecting a little better from a V6 at 4000 lb.
Old 04-06-2009, 01:35 PM
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Here's one recent short trip with 280 miles on the car:

doing average of 31mph

21mpg over 16 miles on 80% highway, 20% local. two toll bridge, no traffic, never hit above 80mph.

and the same trip last week I was only pulling 16mpg.
Old 04-06-2009, 01:46 PM
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ouch...should get better over time I hope. Average speed of 31mpg is a bit missleading. What was the highway average speed?


What's the rage? I think Glk's tank isn't that big (17 gallons), that would mean 270-340 miles? It was nice to get 400-450 on my 01' Solara, and it had V6 also.
Old 04-06-2009, 03:39 PM
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2008 GL 320, 2007 Silverado LTZ C3500 Duramax Turbo Diesel
One of the reasons I am so interested in the 2.2L diesel GLK 220 CDI They claim the test model achieved 6.9L/100 KM or 34.5 MPG (US), has 170 HP and 290 ft/lb torque, 0-100KM 8.8 sec. I know that is considerably slower but ....................

Last edited by scottybdiving; 04-06-2009 at 03:45 PM.
Old 04-06-2009, 04:04 PM
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I think the way they measure consumption is different so it's not straight forward convirsion like this.

I drove E280 in Europe, pick up was very nice but the turbo lag and and narrow torque band takes its tall. It felt more like on/off engine. You push the pedal and nothing happens, then after it downshifts and spools it goes like hell so you need to lay off the pedal or you are speeding. The acceleration feel is nice, but the rest of experience is annoying.

Also, I think if you care about MPG's for whatever reason (money or green), you should not be looking into luxury SUV market.
Old 04-06-2009, 05:19 PM
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Originally Posted by NYCGLK
ouch...should get better over time I hope. Average speed of 31mpg is a bit missleading. What was the highway average speed?


What's the rage? I think Glk's tank isn't that big (17 gallons), that would mean 270-340 miles? It was nice to get 400-450 on my 01' Solara, and it had V6 also.
31mph is not misleading, that includes stop and go, highways, basically start of a trip to end of trip, everything except idle time. This is basically what's calculated on the trip computer. If everyone use this to post their numbers, the reported mpg should be relatively accurate. Think of it as control.

calculated range is about 380miles per tank.
Old 04-06-2009, 05:21 PM
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Originally Posted by NYCGLK
I think the way they measure consumption is different so it's not straight forward convirsion like this.

Also, I think if you care about MPG's for whatever reason (money or green), you should not be looking into luxury SUV market.
sadly, that's exactly why MBUSA does not bring enough of CDI versions into US. Our (US) consumers do not equate luxury to fuel economy.
Old 04-06-2009, 05:53 PM
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Originally Posted by webada
31mph is not misleading, that includes stop and go, highways, basically start of a trip to end of trip, everything except idle time. This is basically what's calculated on the trip computer. If everyone use this to post their numbers, the reported mpg should be relatively accurate. Think of it as control.

calculated range is about 380miles per tank.
No I understad what 31mph means and what it implies and as any average it is misleading.
If you drive 55mph and then hit several red lights you milage will differ from a person who hits 100mph a few times and drive in stop and go traffic flooring from every light. While both have the same average speed. That's why the description of the road conditions and driving style (like you said: no traffic, bellow 80mph etc.) provides more accurate picture than simple mph average.
Old 04-06-2009, 08:18 PM
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Originally Posted by NYCGLK
No I understad what 31mph means and what it implies and as any average it is misleading.
If you drive 55mph and then hit several red lights you milage will differ from a person who hits 100mph a few times and drive in stop and go traffic flooring from every light. While both have the same average speed. That's why the description of the road conditions and driving style (like you said: no traffic, bellow 80mph etc.) provides more accurate picture than simple mph average.
you are talking about velocity vs acceleration. two different things.
Anyways that's why mph was given along with other data to give a whole picture. If you asked for avg speed on highway, I couldn't tell you, no traffic doesn't mean I don't hit the brakes..... and I rather pay attention to the road.

you can try it when you get yours and report back

congrats on your purchase btw

Last edited by webada; 04-06-2009 at 08:25 PM.
Old 04-06-2009, 11:00 PM
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Originally Posted by NYCGLK
I think the way they measure consumption is different so it's not straight forward convirsion like this.

I drove E280 in Europe, pick up was very nice but the turbo lag and and narrow torque band takes its tall. It felt more like on/off engine. You push the pedal and nothing happens, then after it downshifts and spools it goes like hell so you need to lay off the pedal or you are speeding. The acceleration feel is nice, but the rest of experience is annoying.

Also, I think if you care about MPG's for whatever reason (money or green), you should not be looking into luxury SUV market.
I disagree completely. Look how successful the GL 320 has been, and it cost $18K higher than the GLK. The reason you don't see more of them is because 75% of them get shipped to Europe, and the ones they keep here, sell faster than they can deliver them.

The turbo lag requires getting used to. It is constantly being improved upon and nearly eliminated with the addition of a second smaller turbo like BMW's and Ford's TT's
Old 04-06-2009, 11:30 PM
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Not sure what you disagree on. Not sure how many diesel version were sold but I see only 450 and 550 around here.

My question was what's the point of diesel GL/ML320? It still gets crappy mileage compared to other cars just like hybrid RX350 and LS460. Diesel is more expensive, so savings are offset anyways. And even if diesel and gas were the same price, what would your savings be? Not enough to count if you are buying 60k SUV.

Bottom line if you want to save planet you dont buy an new car and especially SUV.

If you wanna save money, you keep your old car, or if it really has to be replaced, you get prius or insight.

Europe does not only have diesel cars, they have cheap cars. That Diesel GLK won't have many options for ppl who want to save money. Also gas costs a lot more than diesel in europe, and crap load more than in US. Cost me 85 euros to fill up diesel E-class.

I agree twinturbo is amazing on bimmer. Diesel E-Class I drove was no where near that.
Old 04-06-2009, 11:51 PM
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Originally Posted by NYCGLK

Bottom line if you want to save planet you dont buy an new car and especially SUV.

If you wanna save money, you keep your old car, or if it really has to be replaced, you get prius or insight.
I'm going to assume you are not in marketing, tell that to Caddy (Escalade hybrids)

Old 04-07-2009, 07:11 AM
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haha no I'm not, I'd tell a lot of things to GM. By no means I'm auto expert, but some things they do wrong from running a business perspetive are so apparent. Not sure what the hell they are smoking there.

But this is one of the reasons why GM is about to go bankrupt, cuz they thought escalade hybrid is a good idea wtf, and I'll keep my comment about ppl who buy hybrid excalades, as my opinion is clear on that.
Old 04-07-2009, 07:44 AM
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Originally Posted by NYCGLK
Not sure what you disagree on. Not sure how many diesel version were sold but I see only 450 and 550 around here.

My question was what's the point of diesel GL/ML320? It still gets crappy mileage compared to other cars just like hybrid RX350 and LS460. Diesel is more expensive, so savings are offset anyways. And even if diesel and gas were the same price, what would your savings be? Not enough to count if you are buying 60k SUV.

Bottom line if you want to save planet you dont buy an new car and especially SUV.

If you wanna save money, you keep your old car, or if it really has to be replaced, you get prius or insight.

Europe does not only have diesel cars, they have cheap cars. That Diesel GLK won't have many options for ppl who want to save money. Also gas costs a lot more than diesel in europe, and crap load more than in US. Cost me 85 euros to fill up diesel E-class.

I agree twinturbo is amazing on bimmer. Diesel E-Class I drove was no where near that.
The reason you don't see them is because you could not buy one in NJ and 3 other states near you until MY 2009. I agree, we are not buying them to save the planet, more to save the wallet. Even when diesel was at it's worst, the mileage more than offset the cost difference with premium. Now, it is less than premium and some place near the cost of regular. The real savings are at re-sale with high mileage or if you are going to drive it forever.

BTW, in a head to head, the GL320 beat the Escalade hybrid in fuel economy and there was no comparison in performance and handling.

Diesel prices have always fluctuated between winter and summer due to the demand for heating oil which come from the same fracture of crude oil. Now that the ULSD crisis is nearly over, with Valero and Exxon/Mobil gearing up to meet demands, the price should be less erratic.

ExxonMobil and Valero to increase ULSD diesel production
ExxonMobil Refining and Supply sees a growing market for diesel, which provides better fuel economy than gasoline. Expanding their output of lower-emission fuel, they will spend more than $1 billion to increase production by 6 million gallons a day of ultra low sulfur diesel (ULSD) at two Gulf of Mexico refineries and a third in Europe by 2010. Those are the two largest U.S. refineries, with 567,000 bpd crude capacity in Baytown, Texas, shown at left, and the 503,000 bpd complex in Baton Rouge, Louisiana, and in Europe, their 305,000 bpd refinery in Antwerp, Belgium.
Valero recently announced a gas oil hydrocracker at its St. Charles refinery and a hydrocracker/coker at Port Arthur, which are expected to boost these refineries' production of ULSD by 49,000 barrels per day and 54,000 barrels per day, respectively. The completed projects will position these refineries among the leaders in the U.S. refining industry, adding more capacity to produce ULSD and process heavy, sour feedstocks that trade at discounts to light sweet crude oil. The projects are expected to be complete by 2011.
December 16, 2008
Old 04-07-2009, 08:51 AM
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Time will show I guess. I agree they should bring more diesel cars here, as they can be fun with all that touque esp. in an SUV. I'm also in favor of diesel instead of hybrids (untill they make plug in hybrid). Right now the only disel car that makes sense to me (from green/money saving perspective) is Jetta that gets over 40mpg.

Anyways, my origian point was that small diesel was not that great in a big car. It had enough torque to pull hard, but you could def feel lack of the horsepower, which shows in 8.8 sec 0-60 for Diesel GLK instead of 6.5 for gas. Now if they made GLK320 CDI (I think they do in Europe) and brought it here....

I thik this thread is going further and further away from what it was for. Why don't you share numbers for your GL. I'm curious to see what you get in real life driving.


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