How reliable is the replacement head for the GLB 250?
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G63
How reliable is the replacement head for the GLB 250?
As some of you know, my newly acquired GLB250 is in the shop waiting on a back ordered replacement head. So now I'm wondering how reliable is the new replacement head for the GLB 250? Has anyone had their head replaced and put any decent miles on it like say 20,000 miles?
Thanks
Thanks
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2021 GLB250 FWD, 2023 GLA250 FWD, 2013 C250, 2015 GLK350, 2005 ML350SE, 2003 E320
The head on our GLK250 failed and turned on the CEL at 27,000 miles and we now have 43,000 miles. All okay so far. FWIW — The service manager says that Mercedes knows where the defect is and it won’t happen again. My SA says that Mercedes is covering the replaced heads for the life of the vehicle, but I can’t find anything online about it.
The best I can find says 2 years just like all the other repairs.
https://www.mbusa.com/content/dam/mb...20Warranty.pdf
The best I can find says 2 years just like all the other repairs.
https://www.mbusa.com/content/dam/mb...20Warranty.pdf
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Joined: Aug 2020
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GLB 250 AMG Line
Symptoms of failing head.
2020 with AMG line is my car. No major issues this far - 30,500 miles - however of late the car struggles to start when it’s been sitting, especially overnight. Am I about to get bit by the cylinder head bug?
Also, good luck getting an OEM windshield replacement. I’ve been waiting since mid-January and nothing in sight. Multiple dealers telling me there is no stock anywhere and they potentially changed suppliers. I gave up and am just getting aftermarket.
Also, good luck getting an OEM windshield replacement. I’ve been waiting since mid-January and nothing in sight. Multiple dealers telling me there is no stock anywhere and they potentially changed suppliers. I gave up and am just getting aftermarket.
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2021 GLB250 FWD, 2023 GLA250 FWD, 2013 C250, 2015 GLK350, 2005 ML350SE, 2003 E320
Our C250 showed no symptoms other than the CEL. It started and ran fine. 75-80 MPH highway was no problem.
As for the windshield, I suppose getting an OE would be a must for a classic to keep it all original. But for a people/grocery hauler, a quality aftermarket windshield should be fine. Just avoid the Chinese budget brands like Benson, because they can have noticeable visual distortion.
As for the windshield, I suppose getting an OE would be a must for a classic to keep it all original. But for a people/grocery hauler, a quality aftermarket windshield should be fine. Just avoid the Chinese budget brands like Benson, because they can have noticeable visual distortion.
Thread Starter
Junior Member
Joined: Jan 2019
Posts: 40
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G63
The head on our GLK250 failed and turned on the CEL at 27,000 miles and we now have 43,000 miles. All okay so far. FWIW — The service manager says that Mercedes knows where the defect is and it won’t happen again. My SA says that Mercedes is covering the replaced heads for the life of the vehicle, but I can’t find anything online about it.
The best I can find says 2 years just like all the other repairs.
https://www.mbusa.com/content/dam/mb...20Warranty.pdf
The best I can find says 2 years just like all the other repairs.
https://www.mbusa.com/content/dam/mb...20Warranty.pdf
I'm about to go pickup my car with its new cylinder head. I'm hoping the new head is designed better.
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2021 Mercedes GLB250 4Matic
There is always a chance that it can fail later, if it was not replaced during the lease. Should be covered under 4 years / 50K miles warranty, after that you on your own. Unless they issue a Recall Notice, like they did in Canada.
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2021 Glb35 AMG (2013 GLK 350)
"The cylinder head was replaced the first time at 15000 miles, the second time at 29000 miles." per below post:
2021 GLA250 cylinder head replaced twice
2021 GLA250 cylinder head replaced twice
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Thread Starter
Junior Member
Joined: Jan 2019
Posts: 40
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G63
"The cylinder head was replaced the first time at 15000 miles, the second time at 29000 miles." per below post:
2021 GLA250 cylinder head replaced twice
2021 GLA250 cylinder head replaced twice
So far it doesn't seem too common on the second head. Still not sure if I want to ditch my GLB 250 for something else.
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From: Orbiting the planet
This place is a joke.
I predict MB will issue an extended warranty for these cylinder heads 10yrs/120k miles like they have for other models with similar design (assembly) flaws.
Senior Member
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2021 Glb35 AMG (2013 GLK 350)
They have the same engine, but GLA45 has AMG hand built engine in comparison to GLA/GLB 250/35 models. Also certain production years during covid has the problem due to parts, etc. Yes, not common in 2nd head.
They extended the engine warranty in Canada, not in US:
https://mbworld.org/forums/glb-class...nder-head.html
https://mbworld.org/forums/glb-class...nder-head.html
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GLC EQB GLS C300 convertible
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GLB 35 AMG
Had the cylinder head replaced due to cracked exhaust valve around 20K or more miles and now at 31K it’s showing symptoms again.
We have a 2021 GLB 35 AMG. Anyone know if it has the extended warranty for the cylinder head in the US?
We have a 2021 GLB 35 AMG. Anyone know if it has the extended warranty for the cylinder head in the US?
Super Member
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2021 Mercedes GLB250 4Matic
Yes. Refer to Warranty Repair Cylinder Head on this forum.
https://mbworld.org/forums/glb-class...nder-head.html
https://mbworld.org/forums/glb-class...nder-head.html
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2021 GLB250 FWD, 2023 GLA250 FWD, 2013 C250, 2015 GLK350, 2005 ML350SE, 2003 E320
