Notices
Mercedes Tech Talk Discuss general technical questions and issues about your Mercedes-Benz. Moderated by a certified MB Tech.
Sponsored by:
Sponsored by:

8 SPEED TRANSMISSION

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old Jan 29, 2022 | 07:01 PM
  #1  
wireman218's Avatar
Thread Starter
Member
Liked
Loved
 
Joined: Jan 2022
Posts: 174
Likes: 26
2022 GLC 300 4 MATIC
8 SPEED TRANSMISSION

Just bought a used 2021 GLB 250 for the wife a few weeks ago. I'm curious about what 8 speed transmission is in the vehicle.

Is it a ZF or a different brand?

My 2020 Audi Q3 has an Aisin 8 speed (Japanese I believe) but I think the GLB tranny is more refined shifting, etc.
Reply
Old Jan 29, 2022 | 07:33 PM
  #2  
W205C43PFL's Avatar
MBWorld God!
 
Joined: Dec 2019
Posts: 32,406
Likes: 6,338
Originally Posted by wireman218
Just bought a used 2021 GLB 250 for the wife a few weeks ago. I'm curious about what 8 speed transmission is in the vehicle.

Is it a ZF or a different brand?

My 2020 Audi Q3 has an Aisin 8 speed (Japanese I believe) but I think the GLB tranny is more refined shifting, etc.
It is a Mercedes in-house DCT. As for if you want to know who built it for them, it would likely be Magna and the control module is supplied by Bosch.

Last edited by W205C43PFL; Jan 29, 2022 at 07:35 PM.
Reply
Old Jan 29, 2022 | 08:49 PM
  #3  
wireman218's Avatar
Thread Starter
Member
Liked
Loved
 
Joined: Jan 2022
Posts: 174
Likes: 26
2022 GLC 300 4 MATIC
Originally Posted by W205C43PFL
It is a Mercedes in-house DCT. As for if you want to know who built it for them, it would likely be Magna and the control module is supplied by Bosch.
Appreciate the info. My 2015 Jeep Grand Cherokee Eco Diesel had an 8 speed ZF tranny and I was impressed by it's quality and smoothness.
Reply
Old Jan 29, 2022 | 08:55 PM
  #4  
W205C43PFL's Avatar
MBWorld God!
 
Joined: Dec 2019
Posts: 32,406
Likes: 6,338
Originally Posted by wireman218
Appreciate the info. My 2015 Jeep Grand Cherokee Eco Diesel had an 8 speed ZF tranny and I was impressed by it's quality and smoothness.
You're welcome. Personally, I would like the ZF transmission on an MB as well as I had a bitter experience with MB transmissions across several models, that being said, there should be good ones it is just that is what I experienced. In a way I am glad MB is still making their own transmission, as the more competitors the better and more beneficial to consumers in the long run.
Reply
Old Jan 30, 2022 | 08:21 AM
  #5  
wireman218's Avatar
Thread Starter
Member
Liked
Loved
 
Joined: Jan 2022
Posts: 174
Likes: 26
2022 GLC 300 4 MATIC
With this being my first Mercedes, I like to know as much info as possible about the car. As a car nut starting with the muscle car era in the 60's I've always been into the details of any vehicle I've owned.
I don't do as much wrenching as I use to, and with the complexity of vehicles now that's probably a good thing.
Reply
Old Jan 30, 2022 | 11:19 AM
  #6  
W205C43PFL's Avatar
MBWorld God!
 
Joined: Dec 2019
Posts: 32,406
Likes: 6,338
Originally Posted by wireman218
With this being my first Mercedes, I like to know as much info as possible about the car. As a car nut starting with the muscle car era in the 60's I've always been into the details of any vehicle I've owned.
I don't do as much wrenching as I use to, and with the complexity of vehicles now that's probably a good thing.
Fair enough, mechanical wise you can totally do Service A yourself (especially the check fluid level and normal function of lights etc.) you can swap cabin air filters, activated charcoal filters, engine air filters, do your own oil change, bleed the brake fluid, change your brake pads and rotors on these cars without too much effort at all. Even differential fluids or even transmission fluid if you are willing to spend a little more time and have more patience, it is all DIYable. Having Xentry helps in terms of monitoring temperatures during the transmission fluid change though. Edit: That being said, the latter two you have lots of time until you need to change those.

Last edited by W205C43PFL; Jan 30, 2022 at 11:21 AM.
Reply
Old Jan 30, 2022 | 11:55 AM
  #7  
wireman218's Avatar
Thread Starter
Member
Liked
Loved
 
Joined: Jan 2022
Posts: 174
Likes: 26
2022 GLC 300 4 MATIC
Originally Posted by W205C43PFL
Fair enough, mechanical wise you can totally do Service A yourself (especially the check fluid level and normal function of lights etc.) you can swap cabin air filters, activated charcoal filters, engine air filters, do your own oil change, bleed the brake fluid, change your brake pads and rotors on these cars without too much effort at all. Even differential fluids or even transmission fluid if you are willing to spend a little more time and have more patience, it is all DIYable. Having Xentry helps in terms of monitoring temperatures during the transmission fluid change though. Edit: That being said, the latter two you have lots of time until you need to change those.
Bought the GLB the 1st part of January. Dealer loaner with 10K miles so service A was completed prior.

The only part of service B that I am concerned with is bleeding the brake fluid. Not sure if the ABS module is bled when doing a fluid exchange by the dealer, and whether a special scan tool is needed for that. Changing cabin filter, oil & filter, and basic inspection is no issue for me. I guess I could do those and have the dealer do the brake fluid exchange. Not sure what the cost for just that procedure would be.

I'm still trying to grasp why there is no specific oil weight given in the owner's manual and no info under the hood. The manual shows spec 229.71 which I think is 0W-20. 229.52 looks to be 5W-30, plus others.

Here in SoCal the temperature extreme is obviously in the summer with possibilties of 100 degrees + so I'm leaning toward the 5W-30 oil. Not sure what the dealer uses for this specific region.

It's the 1st vehicle I've owned not showing a temperature chart and a specified oil weights in the chart.

FYI, my 2020 Audi Q3 specifies 0W-20.

Reply
Old Jan 30, 2022 | 12:18 PM
  #8  
W205C43PFL's Avatar
MBWorld God!
 
Joined: Dec 2019
Posts: 32,406
Likes: 6,338
Originally Posted by wireman218
Bought the GLB the 1st part of January. Dealer loaner with 10K miles so service A was completed prior.

The only part of service B that I am concerned with is bleeding the brake fluid. Not sure if the ABS module is bled when doing a fluid exchange by the dealer, and whether a special scan tool is needed for that. Changing cabin filter, oil & filter, and basic inspection is no issue for me. I guess I could do those and have the dealer do the brake fluid exchange. Not sure what the cost for just that procedure would be.

I'm still trying to grasp why there is no specific oil weight given in the owner's manual and no info under the hood. The manual shows spec 229.71 which I think is 0W-20. 229.52 looks to be 5W-30, plus others.

Here in SoCal the temperature extreme is obviously in the summer with possibilties of 100 degrees + so I'm leaning toward the 5W-30 oil. Not sure what the dealer uses for this specific region.

It's the 1st vehicle I've owned not showing a temperature chart and a specified oil weights in the chart.

FYI, my 2020 Audi Q3 specifies 0W-20.
You don't have to use STAR to bleed although it might help, here is a an overview of what to expect provided by this forum:
https://mbworld.org/how-tos/a/merced...e-fluid-386507
Don't just rely on one source of information though, if you are really doing your own brake fluid, always do some more research so you are comfortable with everything.

Yes for the GLB 250, the certification would be MB-Approval 229.51, 229.52, 229.61, 229.71, 229.72 it takes 5.8 US quarts.
MB-Approval 229.51: https://operatingfluids.mercedes-ben...heet/229.51/en
MB-Approval 229.52: https://operatingfluids.mercedes-ben...heet/229.52/en
MB-Approval 229.61: https://operatingfluids.mercedes-ben...heet/229.61/en
MB-Approval 229.71: https://operatingfluids.mercedes-ben...heet/229.71/en
MB-Approval 229.72: https://operatingfluids.mercedes-ben...heet/229.72/en

Yup 5W 30 may work, MB recommends 5W-30 or 5W-40 as long as temperatures aren't constantly freezing, if it is then 0W-30 or 0W-40

Brake fluid you want MB-Approval 331.0 https://operatingfluids.mercedes-ben...sheet/331.0/en

Last edited by W205C43PFL; Jan 30, 2022 at 12:28 PM.
Reply
MB World Stories

The Best of Mercedes & AMG

story-0

6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)

 Verdad Gallardo
story-1

Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun

 Verdad Gallardo
story-2

Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

 Verdad Gallardo
story-3

8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

 Verdad Gallardo
story-4

Flawlessly Restored Mercedes 190E Evo II Heads to Auction

 Verdad Gallardo
story-5

Electric Mercedes C-Class Unveiled: 11 Things You Need to Know

 Verdad Gallardo
story-6

Mercedes EQS Gets A Major Update: Everything You Need to Know

 Verdad Gallardo
story-7

5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve

 Verdad Gallardo
story-8

Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping

 Verdad Gallardo
story-9

10 Most Reliable Mercedes-Benz Models You Can Buy Used

 Verdad Gallardo
Old Jan 30, 2022 | 12:25 PM
  #9  
wireman218's Avatar
Thread Starter
Member
Liked
Loved
 
Joined: Jan 2022
Posts: 174
Likes: 26
2022 GLC 300 4 MATIC
I will file all this into my GLB 250 folder for reference.
I don't know your location, but I assume you are doing your own oil changes.
Are you using MB oil or another brand that meets MB oil specs?
Filter?
I have used Mobil 1 in most of my previous cars.
Reply
Old Jan 30, 2022 | 12:37 PM
  #10  
W205C43PFL's Avatar
MBWorld God!
 
Joined: Dec 2019
Posts: 32,406
Likes: 6,338
Originally Posted by wireman218
I will file all this into my GLB 250 folder for reference.
I don't know your location, but I assume you are doing your own oil changes.
Are you using MB oil or another brand that meets MB oil specs?
Filter?
I have used Mobil 1 in most of my previous cars.
I use Liqui Moly in my vehicles, the oil filter I just grab one from the dealership so in other words, oil filter I use OEM. They are basically MANN filters, but I recommend just getting the engine oil filter from the dealership. Motor1 is perfectly adequate though if you want to continue using that. I usually recommend getting the oil kit from FCPEuro if you are from the USA unfortunately it seems like they are currently backordered. Depending on the State that you reside in and the local laws, you might want to keep the receipts for all the engine oil, filters in case you need them later on (just in case they blame owner negligence if you have a small issue that can be addressed through warranty).
There is no real reason to get OEM engine oil from MB though as if I recalled correctly in the USA, it is just Mobil1 rebranded.
Edit: To clarify, blaming owner negligence as in they have no record that oil change was done which then you need to use your receipt as proof.

Last edited by W205C43PFL; Jan 30, 2022 at 12:45 PM.
Reply
Old Jan 30, 2022 | 12:48 PM
  #11  
wireman218's Avatar
Thread Starter
Member
Liked
Loved
 
Joined: Jan 2022
Posts: 174
Likes: 26
2022 GLC 300 4 MATIC
I will check out the oil change kit.

I have always documented my oil changes with receipts and photos.


I will probably leave the brake fluid change to the dealer.

CYA for the warranty.

Thanks
Reply
Old Jan 30, 2022 | 01:15 PM
  #12  
W205C43PFL's Avatar
MBWorld God!
 
Joined: Dec 2019
Posts: 32,406
Likes: 6,338
Originally Posted by wireman218
I will check out the oil change kit.

I have always documented my oil changes with receipts and photos.


I will probably leave the brake fluid change to the dealer.

CYA for the warranty.

Thanks
Good that you always document everything.
Enjoy your vehicle!
Reply
Old Apr 15, 2024 | 08:03 AM
  #13  
mattczek92's Avatar
Newbie
 
Joined: Apr 2024
Posts: 1
Likes: 0
2021 glb250
Transmission fluid check?

Any chance you have info on transmission oil, service, DIY and checking transmission fluid I have a 2021 GLB 250

Those links are extremely helpful!
Reply

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 


You have already rated this thread Rating: Thread Rating: 0 votes,  average.


All times are GMT -4. The time now is 10:05 PM.

story-0
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)

Slideshow: Not every Mercedes design becomes timeless, some feel stuck in the era they came from.

By Verdad Gallardo | 2026-05-12 18:09:07


VIEW MORE
story-1
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun

Slideshow: Yes, Mercedes built manual cars, and some of them are far more interesting than you'd expect.

By Verdad Gallardo | 2026-05-02 12:36:58


VIEW MORE
story-2
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

Slideshow: A one-of-one U.S.-spec Mercedes-Benz SLR McLaren Roadster became even rarer after a factory-backed transformation at McLaren's headquarters.

By Verdad Gallardo | 2026-04-29 11:19:28


VIEW MORE
story-3
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

Slideshow: Before curves took over, Mercedes mastered the art of the straight line, and some of those shapes still look right today.

By Verdad Gallardo | 2026-04-25 12:05:49


VIEW MORE
story-4
Flawlessly Restored Mercedes 190E Evo II Heads to Auction

Slideshow: The 190E Evolution II shows how a homologation necessity became a six-figure collector icon.

By Verdad Gallardo | 2026-04-22 17:53:47


VIEW MORE
story-5
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know

Slideshow: Mercedes is turning one of its core nameplates electric, and the details show just how serious this shift is.

By Verdad Gallardo | 2026-04-21 13:58:06


VIEW MORE
story-6
Mercedes EQS Gets A Major Update: Everything You Need to Know

Slideshow: Faster charging, longer range, and a controversial steer-by-wire system define the latest evolution of Mercedes-Benz EQS.

By Verdad Gallardo | 2026-04-15 10:35:34


VIEW MORE
story-7
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve

Slideshow: These overlooked Mercedes-Benz models never got the spotlight, but they quietly delivered more than most remember.

By Verdad Gallardo | 2026-04-13 19:35:45


VIEW MORE
story-8
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping

Slideshow: A well-used 1991 Mercedes-Benz 300D with more than one million miles is now looking for a new owner, and it still appears ready for more.

By Verdad Gallardo | 2026-04-10 10:05:15


VIEW MORE
story-9
10 Most Reliable Mercedes-Benz Models You Can Buy Used

Slideshow: From bulletproof sedans to surprisingly tough SUVs, these Mercedes models proved that the three-pointed star can go the distance.

By Verdad Gallardo | 2026-04-08 09:55:49


VIEW MORE