GLC Class (X253) Produced 2016-2022
View Poll Results: Which is more reliable
2011 glk350
4
50.00%
2017 glc 300 sport utility
4
50.00%
Multiple Choice Poll. Voters: 8. You may not vote on this poll

Mercedes GLK350 or GLC 300 Sports Utility

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Old Jan 12, 2025 | 07:24 PM
  #26  
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GLK350 is a solid reliable car with no major issues. The GLC while newer and more modern has the 4 cylinder engine that is awful and known to be problematic. Not worth the hassle. Before we bought our 2015 GLK350 we actually considered a GLC300. I am glad we did not.

Last edited by C280 Sport; Jan 12, 2025 at 07:26 PM.
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Old Jan 12, 2025 | 07:48 PM
  #27  
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Originally Posted by C280 Sport
GLK350 is a solid reliable car with no major issues. The GLC while newer and more modern has the 4 cylinder engine that is awful and known to be problematic. Not worth the hassle. Before we bought our 2015 GLK350 we actually considered a GLC300. I am glad we did not.
I just bought a 2017 glc300 for 14k total with 105k miles that I could not pass up. One owner with maintenance. The car is in excellent shape in and out. The seller offered to change the spark plugs since I didn't see that on the Carfax report.
I hope mine is the good one.

Last edited by Jacobariel; Jan 12, 2025 at 07:49 PM.
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Old Jan 14, 2025 | 08:39 AM
  #28  
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me: 2015 SL400 & 2015 ML400; wife: 2022 GLC Coupe; daughter: 2017 GLC SUV
Originally Posted by Jacobariel
I just bought a 2017 glc300 for 14k total with 105k miles that I could not pass up. One owner with maintenance. The car is in excellent shape in and out. The seller offered to change the spark plugs since I didn't see that on the Carfax report.
I hope mine is the good one.
I think you'll be very happy, and I seriously doubt you'll find yourself looking wistfully at the GLKs you pass on your travels! My daughter has a 2017 that I drive when I visit, and, like my wife's 2022, it has the silky-smooth 9 speed. At home I alternate between my two 2015s, the SL and ML, both with the 7 speed. I've considered the Road Top Apple CarPlay dongle for my 2015s, as it makes using apps - Waze in particular, so much better in my wife's 2022 (which has factory CarPlay). My millennial daughter seems fine just playing her podcasts and using Waze from her phone without even having it mounted. I used to DIY a lot of MODs in my Benzes and you have the patience and minimal skills required you might like the $300 Road Top unit, or even the $70 phone mount/magnetic charger I'm selling HERE (make an offer). I put simple magnetic charging mounts in my ML and SL and use Waze daily with easy glances at the phone screen.

Welcome to MB, to the forums, and to the GLC; many safe and happy miles to you!
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Old Jan 26, 2025 | 03:44 PM
  #29  
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My check engine light came on. Code reader says it's coolant thermostat code p0128. Is this a big issue?
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Old Jan 26, 2025 | 04:37 PM
  #30  
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Originally Posted by Jacobariel
My check engine light came on. Code reader says it's coolant thermostat code p0128. Is this a big issue?
Search usually helps, yes its a big one

https://mbworld.org/forums/c-class-w...mperature.html
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Old Jan 26, 2025 | 04:56 PM
  #31  
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Originally Posted by DanD.
Search usually helps, yes its a big one

https://mbworld.org/forums/c-class-w...mperature.html
Thanks getting it done for $720 parts and all at a Euro shop on Thursday. Is this price fair?
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Old Jan 28, 2025 | 03:52 PM
  #32  
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How do I know if it's the coolant sensor vs the coolant thermostat? The code reader says po128 thermostat but there are cases when the actual part the reader suggests isn't the fix?
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