2020 GLB Oil Leak
And now I am noticing an oil leak. At first I wasn't able to figure out where it was coming from. Everything from the top of the engine is dry. When you look down on the splash guard from the top, you can see oil. I just had an
oil change done at the dealer today (2/17/2025). They said the oil leak is coming from the oil filter housing. The dealer is starting to notice these more. Is there a way to reach out to MB USA and put in a claim of some sort
to get this repaired. Dealership want $2000. I am more than capable of replacing it myself. I gave up the car repair game for a while now. I've always leased my cars and there for never had to do any maintenance. The GLB
is financed as a used car. Any extended warranty companies I can look into? Anyone have a good write up for the repair procedure? I mean it's self-explanatory but just want to make sure. Last thing I need is my car to be
down for weeks.
And now I am noticing an oil leak. At first I wasn't able to figure out where it was coming from. Everything from the top of the engine is dry. When you look down on the splash guard from the top, you can see oil. I just had an
oil change done at the dealer today (2/17/2025). They said the oil leak is coming from the oil filter housing. The dealer is starting to notice these more. Is there a way to reach out to MB USA and put in a claim of some sort
to get this repaired. Dealership want $2000. I am more than capable of replacing it myself. I gave up the car repair game for a while now. I've always leased my cars and there for never had to do any maintenance. The GLB
is financed as a used car. Any extended warranty companies I can look into? Anyone have a good write up for the repair procedure? I mean it's self-explanatory but just want to make sure. Last thing I need is my car to be
down for weeks.




Without casting doubt on the dealership, I would suggest popping off the splash guard and viewing the attachment point of the filter housing to the block to be certain that it is in fact leaking. The M271 was prone to leaks at the filter housing, so it may be. However, it’s very easy to drip oil onto the splash guard during filter removal on the GLB250.
If it is actually leaking and you can DIY, the housing and gasket look like they’re less than $90, so you’ll save a lot of money (even though I think the $2k price from the dealer is 3x what it should be).
I’ve had my head done around 130k miles. What a pain.
https://mbworld.org/forums/glb-class...naccurate.html
Last edited by Gizmomb2020; Feb 24, 2025 at 12:42 PM.



