Glk350 reliability/equipment questions
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‘16 glc300
Glk350 reliability/equipment questions
Considering a glk350 as a second vehicle for my wife and future first vehicle for my daughter. Have a few questions that I haven’t been able to find answers to as of yet…
1. which would be considered the most “reliable” year of a glk350? Would opt for 2wd as I’m aware of the common 4matic issues, but have read a lot of conflicting info about which version is better (early m272 vs later m276).
2. is there any difference in passive safety or crash test ratings between the earlier and later glk? Are the later models considered safer in a crash or are they about the same?
3. Does the glk have auto start/stop? If so, what years have this feature? If equipped can it be permanently defeated, or would it have to be turned off at each engine start?
4. what are some of the more common costly repairs or maintenance items on the 2wd glk350?
5. how uncommon are glk350’s with distronic? I know it was an available option but I have never seen one in person, and I used to work for Mercedes. Would love to find one with distronic but they seem to be a myth
Thanks…trying to decide between a glk350 2wd, ‘10-‘16 xc60, and a ‘17 cx5
1. which would be considered the most “reliable” year of a glk350? Would opt for 2wd as I’m aware of the common 4matic issues, but have read a lot of conflicting info about which version is better (early m272 vs later m276).
2. is there any difference in passive safety or crash test ratings between the earlier and later glk? Are the later models considered safer in a crash or are they about the same?
3. Does the glk have auto start/stop? If so, what years have this feature? If equipped can it be permanently defeated, or would it have to be turned off at each engine start?
4. what are some of the more common costly repairs or maintenance items on the 2wd glk350?
5. how uncommon are glk350’s with distronic? I know it was an available option but I have never seen one in person, and I used to work for Mercedes. Would love to find one with distronic but they seem to be a myth
Thanks…trying to decide between a glk350 2wd, ‘10-‘16 xc60, and a ‘17 cx5
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2013 glk 350
3. I think auto stop start is in 12/ 13 and on. I Have to turn it off every time I start on my 13. There is a company that makes a plug in dongle for about 170$ that bypasses it. Mid City Engineering . I think it’s called Eco off. They are in Chicago .
what did you do at MB. Do you have a good mechanic ?
what did you do at MB. Do you have a good mechanic ?
Last edited by Mmr1; Jan 3, 2024 at 08:48 AM.
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2011 GLK 350 4Matic
I'm not sure which is ultimately the most reliable.
The M272 has the "swirl flap" intake manifold that can get gunked up (requiring replacement - though not a really huge job). It's also got the balance shaft engine, and apparently that's a failure point (though based on anecdotal evidence - or lack thereof - it's not a likely issue on any given car.
The M276 has direct injection, so you'll have the joy of getting to walnut-blast the intake manifold clean when (not if) it gets nasty. Also, I've read lots of threads on the "joy" of trying to swap out the oil separator (PCV) system, squirreled away on the rear, unreachable corner of the engine.
As for styling - I'm actually more of a fan of the pre-facelift model. It's just "more German" I guess.
The M272 has the "swirl flap" intake manifold that can get gunked up (requiring replacement - though not a really huge job). It's also got the balance shaft engine, and apparently that's a failure point (though based on anecdotal evidence - or lack thereof - it's not a likely issue on any given car.
The M276 has direct injection, so you'll have the joy of getting to walnut-blast the intake manifold clean when (not if) it gets nasty. Also, I've read lots of threads on the "joy" of trying to swap out the oil separator (PCV) system, squirreled away on the rear, unreachable corner of the engine.
As for styling - I'm actually more of a fan of the pre-facelift model. It's just "more German" I guess.
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From: South Texas
2014 GLK350 base model (active) ; 2001 E320 base (retired); 2001 Wrangler soft-top
1. Reliability depends a lot on the previous owners' care of the vehicle. Poor maintenance can override any general reliability inherent in a vehicle.
3. Our 2014 GLK Base has ECO. It has become a natural sequence for me to start it up and tap the ECO button to turn it off. As Mmr1 states, there's a dongle available.
4. 90k miles and nothing major or minor ... with *fingers crossed*. Tires, fluid changes, filters, brake pads (front only), Aux battery replaced (but not main battery, yet).
5. There are three forms of Distronic ...
DISTRONIC vs. DISTRONIC PLUS vs. DISTRONIC PLUS with Steering Assist.
Our 2014 has plain ol' DISTRONIC. I honestly wouldn't want my vehicle deciding when to brake or steer.
3. Our 2014 GLK Base has ECO. It has become a natural sequence for me to start it up and tap the ECO button to turn it off. As Mmr1 states, there's a dongle available.
4. 90k miles and nothing major or minor ... with *fingers crossed*. Tires, fluid changes, filters, brake pads (front only), Aux battery replaced (but not main battery, yet).
5. There are three forms of Distronic ...
DISTRONIC vs. DISTRONIC PLUS vs. DISTRONIC PLUS with Steering Assist.
Our 2014 has plain ol' DISTRONIC. I honestly wouldn't want my vehicle deciding when to brake or steer.
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2021 GLB250 FWD, 2023 GLA250 FWD, 2013 C250, 2015 GLK350, 2005 ML350SE, 2003 E320
1. IMO the naturally aspirated 3.5L M276 is a forever engine when properly maintained. Our ‘15 had 155k miles when it was totaled in an accident.
4. Our ‘15 was maintained almost totally by me to MB recommendation. The only repair ever made was a crankcase breather valve at about 105k miles. It never needed the mentioned walnut hull blast and did not suffer from noticeable power loss. One notable thing is that the spark plugs are difficult to change.
4. Our ‘15 was maintained almost totally by me to MB recommendation. The only repair ever made was a crankcase breather valve at about 105k miles. It never needed the mentioned walnut hull blast and did not suffer from noticeable power loss. One notable thing is that the spark plugs are difficult to change.
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GLK 250
I'd say if safety and reliability are your main concerns, then go with the newer Mazda.
Volvos aren't known for reliability and are nearly as expensive to maintain/repair as other Euros without the performance.
Volvos aren't known for reliability and are nearly as expensive to maintain/repair as other Euros without the performance.
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‘16 glc300
Yes, I agree that the Mazda is the most logical solution though a bit more expensive. We had a 2019 cx5 for a couple years that we were very happy with, but then needed something bigger and sold it for a cpo xc90 with 10yr/unlimited mile warranty that we are also very happy with (the car and the warranty lol)
Even though the Mazda is very safe and will easily be the most reliable of the bunch, I can’t shake the feeling that a p3 xc60 or a glk would be an even safer option in my area (Central Valley CA) where it seems like everyone drives lifted diesel trucks. There are many roadside memorials on the country roads around here and major injury/fatal accident are all too common. Perhaps it’s an irrational belief, but I feel like a slightly older glk of xc60 would protect occupants better in a major collision than a newer Mazda.
Even though the Mazda is very safe and will easily be the most reliable of the bunch, I can’t shake the feeling that a p3 xc60 or a glk would be an even safer option in my area (Central Valley CA) where it seems like everyone drives lifted diesel trucks. There are many roadside memorials on the country roads around here and major injury/fatal accident are all too common. Perhaps it’s an irrational belief, but I feel like a slightly older glk of xc60 would protect occupants better in a major collision than a newer Mazda.
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‘16 glc300
So if I’m understanding correctly, the early and later models (2wd) should be about equally reliable assuming proper maintenance. The m276 is slightly more dependable with higher maintenance/repair costs, while the m272 is easier/cheaper to maintain but perhaps has a few more issues. Does that sound about right? Are the transmissions the same with the early and later models?
Thanks for the tip on mid-city’s dongle to disable ECO SS…I absolutely loathe that feature and would probably avoid a vehicle altogether if it couldn’t be permanently defeated. My heart wants a glk, my wallet wants an older xc60 3.2, and my head tells me to get the cx5.
I worked in Mercedes sales over a decade ago and we do have a good independent mechanic locally, but here in northern CA everything is expensive (dealer $250/hr, good independent $180/hr)
So I guess distronic glk’s do exist…I’ve just never seen one in person or online for sale
Thanks for the tip on mid-city’s dongle to disable ECO SS…I absolutely loathe that feature and would probably avoid a vehicle altogether if it couldn’t be permanently defeated. My heart wants a glk, my wallet wants an older xc60 3.2, and my head tells me to get the cx5.
I worked in Mercedes sales over a decade ago and we do have a good independent mechanic locally, but here in northern CA everything is expensive (dealer $250/hr, good independent $180/hr)
So I guess distronic glk’s do exist…I’ve just never seen one in person or online for sale
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2021 GLB250 FWD, 2023 GLA250 FWD, 2013 C250, 2015 GLK350, 2005 ML350SE, 2003 E320
Yes. GLKs with Distronic exist. My ‘15 had the basic version.
All things considered, the M272 and M276 engines should not be the determining factor in a purchase. The M272 will be in pre-2012 models and the M276 from 2012-2015. The M276 does have about 35 more horsepower.
Transmissions: All GLKs have 7 speed automatic transmissions. Mercedes built after 06-22-2010 have the 7GTronic Plus, so there could be some early GLKs that have the 7GTronic. The way to tell would be to enter the VIN into lastvin.com and search for Code A89. GLKs with this code have 7GTronic Plus and those without it have the 7GTronic. The only difference important to a buyer is that the two transmission versions require different fluids.
Check NHTSA & IIHS for safety ratings. Our experience was mostly positive — Struck animal at speed —> Lost control struck tree —> Seatbelt tensioners & airbags deployed —> Full 360 rollover —> GLK came to rest —> mBrace called for help. Passenger compartment maintained integrity throughout and driver was able to open door and exit, but did suffer a broken leg. Maybe another brand would have performed as well or better. Not planning on experimenting.
All things considered, the M272 and M276 engines should not be the determining factor in a purchase. The M272 will be in pre-2012 models and the M276 from 2012-2015. The M276 does have about 35 more horsepower.
Transmissions: All GLKs have 7 speed automatic transmissions. Mercedes built after 06-22-2010 have the 7GTronic Plus, so there could be some early GLKs that have the 7GTronic. The way to tell would be to enter the VIN into lastvin.com and search for Code A89. GLKs with this code have 7GTronic Plus and those without it have the 7GTronic. The only difference important to a buyer is that the two transmission versions require different fluids.
Check NHTSA & IIHS for safety ratings. Our experience was mostly positive — Struck animal at speed —> Lost control struck tree —> Seatbelt tensioners & airbags deployed —> Full 360 rollover —> GLK came to rest —> mBrace called for help. Passenger compartment maintained integrity throughout and driver was able to open door and exit, but did suffer a broken leg. Maybe another brand would have performed as well or better. Not planning on experimenting.
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‘16 glc300
Thanks for the info…so does that mean the 7g+ isn’t really improved over the 7g? From what I’ve read it seems the 7g is a pretty stout transmission overall, with proper fluid maintenance.
Crash tests are tough to compare between eras because of the changes in testing. For example, no small overlap for the glk while the cx5 did very well. That being said, I tend to have a little more faith in cars that are designed more with crash safety as a general philosophy (ie Volvo & Mercedes) as opposed to built to do well in crash tests. I was unfortunate enough to witness a new Corolla (IIHS top safety pick +) get rear ended at high speed by a lifted tundra a few years ago…drunk guy in the tundra was fine but one death and two critical in the Corolla.
Sounds like your glk did well to protect the driver for the severity of the accident.
Crash tests are tough to compare between eras because of the changes in testing. For example, no small overlap for the glk while the cx5 did very well. That being said, I tend to have a little more faith in cars that are designed more with crash safety as a general philosophy (ie Volvo & Mercedes) as opposed to built to do well in crash tests. I was unfortunate enough to witness a new Corolla (IIHS top safety pick +) get rear ended at high speed by a lifted tundra a few years ago…drunk guy in the tundra was fine but one death and two critical in the Corolla.
Sounds like your glk did well to protect the driver for the severity of the accident.
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2021 GLB250 FWD, 2023 GLA250 FWD, 2013 C250, 2015 GLK350, 2005 ML350SE, 2003 E320
7Gtronic+ uses low vis fluid. So clutch packs and fluid are designed to go together. Otherwise they are practically identical. For whatever the build date is you get what Mercedes put in. It’s not a reliability factor at all. Our + had 155k miles on it and worked flawlessly (I did 60k mile fluid changes).
BTW-personally, I’m a fan of the M276. It’s a 60 degree V6 so no balance shaft, because it had perfect static and dynamic balance. You may not like the stop/go feature, but the M276 had one of the most advanced ever created. It sensed the piston closest to TDC at stop and charged and fired that cylinder on restart, often never hitting the starter. Stops and restarts were seamless because of that and the balance. It also had advanced ultra low friction hypereutectic cylinder liners rather than sprayed on anti friction coating. I could go on, but most consumers aren’t interested in invisible details. Besides, poor maintenance can wipe out any advantage that brings. I’m sure the reason they discontinued it was the high cost of production.
BTW-personally, I’m a fan of the M276. It’s a 60 degree V6 so no balance shaft, because it had perfect static and dynamic balance. You may not like the stop/go feature, but the M276 had one of the most advanced ever created. It sensed the piston closest to TDC at stop and charged and fired that cylinder on restart, often never hitting the starter. Stops and restarts were seamless because of that and the balance. It also had advanced ultra low friction hypereutectic cylinder liners rather than sprayed on anti friction coating. I could go on, but most consumers aren’t interested in invisible details. Besides, poor maintenance can wipe out any advantage that brings. I’m sure the reason they discontinued it was the high cost of production.
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2013 glk 350
4. Ignition key lock fails to let car start , I think its about 1200-1700$ and MB has to do it.
The PVC unit fails at the gasket where it connects, and then you get excessive crankcase pressure. Test crankcase negative pressure before buying . It’s a 5-6 hr job to replace , and 200$+ part. Mine failed at 75000 miles.
U joints, if they break on the highway they will ruin the transmission transfer case, as they -MB were to cheap to have a brace to keep driveshaft from flailing , if you hear clunking when shifting, or from coasting to acceleration, look at u joints .
The Rear frame recall from rust, when it goes to a MB Dealer, the dealer will hit you for thousands for brake and fuel line replacement And whatever else he can. I wouldn’t buy a rusted rear frame car.
mine has been trouble free except for the u joint - drive shaft , that I ruined getting stuck in snow. You can’t replace the front u joint. You have to spend 350 minimum for a driveshaft and it’s a 5 hr job to replace!
it’s direct injection, they say you will need heads walnut blasted but nobody here has complained about it.
its a very good vehicle but repairs are 3-6 x more than more reliable vehicles. That’s why resale value is low.
The PVC unit fails at the gasket where it connects, and then you get excessive crankcase pressure. Test crankcase negative pressure before buying . It’s a 5-6 hr job to replace , and 200$+ part. Mine failed at 75000 miles.
U joints, if they break on the highway they will ruin the transmission transfer case, as they -MB were to cheap to have a brace to keep driveshaft from flailing , if you hear clunking when shifting, or from coasting to acceleration, look at u joints .
The Rear frame recall from rust, when it goes to a MB Dealer, the dealer will hit you for thousands for brake and fuel line replacement And whatever else he can. I wouldn’t buy a rusted rear frame car.
mine has been trouble free except for the u joint - drive shaft , that I ruined getting stuck in snow. You can’t replace the front u joint. You have to spend 350 minimum for a driveshaft and it’s a 5 hr job to replace!
it’s direct injection, they say you will need heads walnut blasted but nobody here has complained about it.
its a very good vehicle but repairs are 3-6 x more than more reliable vehicles. That’s why resale value is low.
Last edited by Mmr1; Jan 5, 2024 at 05:21 AM.
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2021 GLB250 FWD, 2023 GLA250 FWD, 2013 C250, 2015 GLK350, 2005 ML350SE, 2003 E320
If you want a car or SUV you just drive and park in your driveway, I’m with Scotty on that, get a Toyota. Specifically, get a Corolla or a 4 Runner.
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2011 GLK 350 4Matic
I also counsel folks who are looking primarily for a "transportation appliance" to go with a Honda (Acura) or Toyota (Lexus) and call it a day. That said, the anecdotal evidence is that the X204 GLK platform is a very reliable, well-built vehicle that should reward an owner who takes reasonably good care of it with a long, relatively trouble-free life. Yes, there are a few things that can and do go wrong, but let's remember that Hondas and Toyotas also have their glitches.
I think the thing that puts these wonderful vehicles on the used market for very reasonable prices is the perceived cost of maintenance. Yep, the MB dealerships are going to get deep in your pocket at any opportunity, and even indy shops aren't going to be cheap. I'm not really convinced that it's a lot different for "lesser vehicles" as there's just no such thing as a "cheap shop", other than - of course - the one that we get to through our laundry room. ;-)
I think the thing that puts these wonderful vehicles on the used market for very reasonable prices is the perceived cost of maintenance. Yep, the MB dealerships are going to get deep in your pocket at any opportunity, and even indy shops aren't going to be cheap. I'm not really convinced that it's a lot different for "lesser vehicles" as there's just no such thing as a "cheap shop", other than - of course - the one that we get to through our laundry room. ;-)
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GLK350, Model 3, EVO X, e46 330i ZHP, 66 Mustang
I also counsel folks who are looking primarily for a "transportation appliance" to go with a Honda (Acura) or Toyota (Lexus) and call it a day. That said, the anecdotal evidence is that the X204 GLK platform is a very reliable, well-built vehicle that should reward an owner who takes reasonably good care of it with a long, relatively trouble-free life. Yes, there are a few things that can and do go wrong, but let's remember that Hondas and Toyotas also have their glitches.
I think the thing that puts these wonderful vehicles on the used market for very reasonable prices is the perceived cost of maintenance. Yep, the MB dealerships are going to get deep in your pocket at any opportunity, and even indy shops aren't going to be cheap. I'm not really convinced that it's a lot different for "lesser vehicles" as there's just no such thing as a "cheap shop", other than - of course - the one that we get to through our laundry room. ;-)
I think the thing that puts these wonderful vehicles on the used market for very reasonable prices is the perceived cost of maintenance. Yep, the MB dealerships are going to get deep in your pocket at any opportunity, and even indy shops aren't going to be cheap. I'm not really convinced that it's a lot different for "lesser vehicles" as there's just no such thing as a "cheap shop", other than - of course - the one that we get to through our laundry room. ;-)
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‘16 glc300
Much obliged! I’m not as concerned about the pcv or driveshaft (have good independent mech and looking only at 2wd), but the ignition steering lock does concern me. Is it really a dealer-only job? In my area, dealers run about $250/hr and they haven’t proven to be the most competent bunch even at those prices. I’ll have to do a little more research into the issue. Potential problems that can leave them stranded would be more of a concern to me than those that allow the car to be limped along to a safe location if needed.
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2021 GLB250 FWD, 2023 GLA250 FWD, 2013 C250, 2015 GLK350, 2005 ML350SE, 2003 E320
There’s a system in all Benzes called the DAS (drive authorization system) that helps keep your Benz in your driveway and not someone else’s. All the components, ECU, EIS, ESL, TCU, are coded together. Any failure of that system will cause a failure to start. C Class cars, which share basic architecture with the GLK used to be notorious for failure of the ESL. By the time the GLK came along, that was mostly resolved, so a much smaller issue. There is an after market emulator for the ESL, but nothing for the other components. Mercedes will not sell DAS components to individuals and most independent shops. Since the components are all coded together, used parts need to go through a process of returning them to factory settings so they can be retrained as if new. That process is not 100% reliable. Even the aftermarket emulator has to be trained to the vehicle. So in most cases, it’s a dealer only repair.
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GLK 350 / Porsche 993
2wd M272 GLK in good condition would be my preference.
M272 in GLK is easier to work on. I am only aware of the intake plenum needing to be replaced at high age on M276. I did all pulley including crank pulley, water pump and t-stat at 100k miles.
Having said that my friends with GLE350 and E350 have well over 100k miles on their M276s with basic maintenance.
M272 in GLK is easier to work on. I am only aware of the intake plenum needing to be replaced at high age on M276. I did all pulley including crank pulley, water pump and t-stat at 100k miles.
Having said that my friends with GLE350 and E350 have well over 100k miles on their M276s with basic maintenance.
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2014 GLK 350 4matic
1. IMO the naturally aspirated 3.5L M276 is a forever engine when properly maintained. Our ‘15 had 155k miles when it was totaled in an accident.
4. Our ‘15 was maintained almost totally by me to MB recommendation. The only repair ever made was a crankcase breather valve at about 105k miles. It never needed the mentioned walnut hull blast and did not suffer from noticeable power loss. One notable thing is that the spark plugs are difficult to change.
4. Our ‘15 was maintained almost totally by me to MB recommendation. The only repair ever made was a crankcase breather valve at about 105k miles. It never needed the mentioned walnut hull blast and did not suffer from noticeable power loss. One notable thing is that the spark plugs are difficult to change.
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2014 GLK 350 4matic
7Gtronic+ uses low vis fluid. So clutch packs and fluid are designed to go together. Otherwise they are practically identical. For whatever the build date is you get what Mercedes put in. It’s not a reliability factor at all. Our + had 155k miles on it and worked flawlessly (I did 60k mile fluid changes).
BTW-personally, I’m a fan of the M276. It’s a 60 degree V6 so no balance shaft, because it had perfect static and dynamic balance. You may not like the stop/go feature, but the M276 had one of the most advanced ever created. It sensed the piston closest to TDC at stop and charged and fired that cylinder on restart, often never hitting the starter. Stops and restarts were seamless because of that and the balance. It also had advanced ultra low friction hypereutectic cylinder liners rather than sprayed on anti friction coating. I could go on, but most consumers aren’t interested in invisible details. Besides, poor maintenance can wipe out any advantage that brings. I’m sure the reason they discontinued it was the high cost of production.
BTW-personally, I’m a fan of the M276. It’s a 60 degree V6 so no balance shaft, because it had perfect static and dynamic balance. You may not like the stop/go feature, but the M276 had one of the most advanced ever created. It sensed the piston closest to TDC at stop and charged and fired that cylinder on restart, often never hitting the starter. Stops and restarts were seamless because of that and the balance. It also had advanced ultra low friction hypereutectic cylinder liners rather than sprayed on anti friction coating. I could go on, but most consumers aren’t interested in invisible details. Besides, poor maintenance can wipe out any advantage that brings. I’m sure the reason they discontinued it was the high cost of production.
