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2015 GLK 250 BlueTec vs. 350 4MATIC?

Old 01-09-2019, 06:30 PM
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2015 GLK 250 BlueTec vs. 350 4MATIC?

Which GLK to buy, based on annual costs and engine life span?
How much more is the annual maintenance cost for the diesel engine?
How many more miles will it last vs. the gas model 4MATIC?
Pro and Cons...which one to buy?

Last edited by RJCMowgli; 01-09-2019 at 06:55 PM.
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Old 01-09-2019, 07:44 PM
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Note that the diesel is also 4matic.

The diesel emissions controls are complex and prone to issues. Search for NOX sensor issues, DPF issues, adblue problems. When they go bad out of warranty it costs a lot to fix.

The older 4matics seem to have a lot of transfer case issues - the transfer case is combined with the transmission so when it goes bad they both have to be replaced at a premium price. The last generation has not been around long enough to give a good sample of longevity so with a 2015 you are on your own. Look in this and the other forums for the 4matic problems.

If you are looking for a nice small suv that will last a long time with minimal maintenance costs get a 350 with rear wheel drive. Others will disagree, but that is my opinion.

I do not intend to keep my RWD 350 past 100k miles as so far that seem to be around the point where expensive things start to go wrong.
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Old 01-10-2019, 01:37 AM
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Originally Posted by formerjeepguy View Post
Note that the diesel is also 4matic.

The diesel emissions controls are complex and prone to issues. Search for NOX sensor issues, DPF issues, adblue problems. When they go bad out of warranty it costs a lot to fix.

The older 4matics seem to have a lot of transfer case issues - the transfer case is combined with the transmission so when it goes bad they both have to be replaced at a premium price. The last generation has not been around long enough to give a good sample of longevity so with a 2015 you are on your own. Look in this and the other forums for the 4matic problems.

If you are looking for a nice small suv that will last a long time with minimal maintenance costs get a 350 with rear wheel drive. Others will disagree, but that is my opinion.

I do not intend to keep my RWD 350 past 100k miles as so far that seem to be around the point where expensive things start to go wrong.
This is the same advice I got when I was shopping around couple of years back. I ended up buying RWD 2012 GLK and so far no issues, except that one incident when it died on me w/o any warning and the next day it worked again. For my regular use RWD is good enough, I do drive to ski resorts couple of times a year, but facing 4matic issues for that may be a bit too much.

Last edited by ArtistDrive; 01-10-2019 at 02:47 PM. Reason: Added more input
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Old 01-10-2019, 01:41 AM
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Non-turbo, RWD is probably the way to go for bet reliability and easier maintenance.
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Old 01-10-2019, 04:45 PM
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I would say it depends on several things, including your typical commute and how proactive you plan to be about maintenance. Our GLK250 is at 86k miles currently, returns an average of 36-38mpg depending on how heavy my right foot is, and can regularly do 600 miles on a tank of fuel. It may not be a sprint racer from stoplight to stoplight, but on the open road it surprises most. It cruises quietly and comfortably at 80+ mph all day long and I wouldn't have any other SUV.

Yes, the exhaust system is complicated and can be troublesome to diagnose & fix properly (and affordably), because MB stealerships see very few of these Bluetecs compared to the zillions of gassers they typically service.

I would advise you to drive both, see which one you fancy more, work out what your commute and expected maintenance costs will be and you'll have an idea of what it'll cost to own. Then make an informed decision and don't look back

Drive more, worry less.
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Old 01-10-2019, 10:36 PM
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Originally Posted by andreigbs View Post
I would say it depends on several things, including your typical commute and how proactive you plan to be about maintenance. Our GLK250 is at 86k miles currently, returns an average of 36-38mpg depending on how heavy my right foot is, and can regularly do 600 miles on a tank of fuel. It may not be a sprint racer from stoplight to stoplight, but on the open road it surprises most. It cruises quietly and comfortably at 80+ mph all day long and I wouldn't have any other SUV.

Yes, the exhaust system is complicated and can be troublesome to diagnose & fix properly (and affordably), because MB stealerships see very few of these Bluetecs compared to the zillions of gassers they typically service.

I would advise you to drive both, see which one you fancy more, work out what your commute and expected maintenance costs will be and you'll have an idea of what it'll cost to own. Then make an informed decision and don't look back

Drive more, worry less.
That is very impressive mileage. With GLK 350 on gasoline version, I seldom cross 20 mpg, how is others experience with GLK 350?
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Old 01-10-2019, 11:18 PM
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My 2013 glk 350 is at 93,00 miles. No transfer case issues yet. Just has rough downshift from time to time. I would avoid the bluetec since there’s lots of issues with the various emission components.
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Old 01-11-2019, 09:44 AM
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Originally Posted by ArtistDrive View Post
That is very impressive mileage. With GLK 350 on gasoline version, I seldom cross 20 mpg, how is others experience with GLK 350?
That is odd. I almost never get below 20 in my gasser. On the highway I have seen as much as 32 mpg if I set cruise control to 64 mph. If I let my foot do the regulating in traffic I get 24-27 mpg.
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Old 01-12-2019, 01:25 AM
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Originally Posted by formerjeepguy View Post
That is odd. I almost never get below 20 in my gasser. On the highway I have seen as much as 32 mpg if I set cruise control to 64 mph. If I let my foot do the regulating in traffic I get 24-27 mpg.
32? I've never seen 32mpg on 350. Wife managed to get 25-26mpg on highway when forced to go 50-60mph, which is seems close to what you have. Also what GLK says is not real mileage and it drops as you drive and is even lower when you measure it.
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Old 01-12-2019, 01:26 AM
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Old 01-12-2019, 01:43 AM
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I've gotten 39 mpg on a two hour trip before.
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Old 01-13-2019, 11:58 PM
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Originally Posted by formerjeepguy View Post
That is odd. I almost never get below 20 in my gasser. On the highway I have seen as much as 32 mpg if I set cruise control to 64 mph. If I let my foot do the regulating in traffic I get 24-27 mpg.
Nice, do you have any tips on maintenance?
I use 91 rating gasoline and mine is still under warranty with prepaid service maintenance with dealer and done all of them on schedule.
Wondering if there are any others things to do to increase the mileage go beyond 20 here (my commute is a mix a mix of freeway and local roads)

Last edited by ArtistDrive; 01-14-2019 at 12:00 AM. Reason: added more context
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Old 01-14-2019, 01:14 PM
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Originally Posted by ArtistDrive View Post
That is very impressive mileage. With GLK 350 on gasoline version, I seldom cross 20 mpg, how is others experience with GLK 350?
If the GLK350 is also 4Matic, you'll probably experience low 20's MPG at best. This will be hand-calculated over several fill-ups, not going by the computer guesstimation.

I supposed a RWD GLK350 can reasonably reach 30 MPG at a steady speed on the highway, but that's far from saying it can average 30MPG on a tank of fuel. Most likely, 24-26MPG is the best you can expect.

Compared to the Bluetec, it's not much of a contest. I've had roadtrips where the computer displays as much as 44 MPG for a time. When hand calculated at next fill-up, however, it's corrected to 38MPG.

As has been said, if you want to avoid the potential costly exhaust system on the Bluetec that is totally your call. Get the vehicle that you think will serve your particular needs and wants, not what some anonyms on the Intarwebz say. It's your money

As for me, why spark when I can glow?
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Old 01-20-2019, 11:52 AM
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I was looking at 2013 GLk 350 with 100,000km.One owner all history repairs.Is there anything I should look out for?.Of course I have my mechanic check it out first but is there any specifics I should point out to him..
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