BMW 3-Series Transmission Questions
Read a thread on bimmerfest.com about the automatic transmissions used on the new BMW 3-series coupe.
Some said the one on 328i is a GM-sourced 6-speed auto transmission while the one on 335i is a much better New ZF 6 transmission. Is this true? I test drove a 328i auto y/day and was impressed with the ride in Sports mode.
However, I'm only interested in the 6-speed stick in both coupes. Just curious why BMW used different auto transmission if it's true? Any insight on this?
Some said the one on 328i is a GM-sourced 6-speed auto transmission while the one on 335i is a much better New ZF 6 transmission. Is this true? I test drove a 328i auto y/day and was impressed with the ride in Sports mode.
However, I'm only interested in the 6-speed stick in both coupes. Just curious why BMW used different auto transmission if it's true? Any insight on this?
Tagged:
0
This discussion has been closed.
Comments
GM makes superb automatic transmissions. I have the manual in my 325i but was very impressed by the auto in the 325i and 330i.
Doesn't BMW manufacture its own auto transmissions? Why would it use GM-sourced ones? Cheaper? Better? :confuse:
Your input is welcome.
I think the GM transmission is a Getrag, a german company bought by GM many years ago. In the E46's, Getrags were used on the 323/325s and ZF trannies were used on the 328/330's. It's very possible that ZF's are beefier, therefore used in higher torque applications, but I'm not sure if that's the reason.
FWIW, I test-drove a 323Ci and bought a 330Ci (both manuals). IMHO, the Getrag was the nicer shifting of the two by a pretty wide margin.
I can't guarantee that this is correct, it's compiled from memory of things I heard/read over 5 years ago.
Getrag is now partially owned by Ford known as GFT,,, Getrag Ford Transmission.
The 328 gets the new GM six speed, the 335 gets the 2nd generation ZF 6 Speed know as the 6HPTU (Technical Upgrade) which among other features includes significantly faster shift times
I've got one of the 12 (well, maybe a few more) Lincoln LS's with a manual, and it's a Getrag. Now I know why.
My most likely next car is a BMW 3, so it's good info for that as well.
BMW has been making Turbocharged Diesel engines for the European market for years. They even made blown gas engines a couple decades ago, although those too were only for the European (and Australian???) market(s).
In the past, I've had turbocharged engines and I've never lost a blower, even with more than 100,000 miles on the clock. My secret? Synthetic oil. Turns out that's one of BMWs secrets as well. ;-)
Best Regards,
Shipo
I think BMW is keen to the competition and is stepping up the pace of improvement, don't you think?
Interesting you compare it to the 911 as I was using the C4S as an example of what can be done with a great awd setup in recent posts.
Have all the luck and safety in your new ride!
Regards,
OW
What ride(s) are you coming out of or have experience in? How do you rate the 335 vs. others?
Some have compared it on par with the outgoing M.
Regards,
OW
Both times the quantity of the leak was significant, about a pint or so, and was located under the engine on the drivers side, just inside of the drivers side wheel.
In each case it was on cold mornings. The first time the car had warmed for about ten minutes and when I put in in reverse and it felt like the emergenct brake was on. after reving the engine it seemed to break free and drove well after that ( I didn't see the oil puddle until returning later in the day.
On the second occasion, same thing but this time more fluid and then the car would not engage in any gear....again, another large puddle of fluid.
One mechanic power washed the engine and could not find any significant point where it leaked from.
I now have it into a BMW service center and have refilled he transmission fluid and the car drives well and....no major leaks!! Some minor ones at rear main seal and topside shift shaft seal.
They are miffed....will be replacing the frozen Vent valve and feel it might have something to do with building pressure in the engine and it being somehow related to the leaks.......?
Anyone have any insight to this perplexing issue....?
Many thanks for any and all replies.
tbysea
This does not make sense to me as to why this car would not be covered under warranty - its crazy. By the way, Edmonton BMW says they have to replace the entire transmission because the "frost plug" is not a part available from BMW - it will cost me $14,000.
I was wondering if any others have had leaking transmissions in 2007 328XI (Automatic Trans)? Also has anyone ever heard about the frost plug leaking? Has anyone else had warranty issues denied by BMW?
Thanks
Darryl
Please inform BMWUSA that you want this investigated further.
Regards,
OW
I have been in discussion with BMW Canada for the past two weeks. Their story is that someone other than BMW has worked on the transmission. This seems crazy as the car is fairly new and unlikely that someone would get unauthorized work done. The only two owners of the car have been the original BMW dealership and myself. BMW Canada is only saying work was performed inadequately on the transmission and this is causing the leak. The only proof they have told me about is they can tell from the markings on the bolts.
BMW Canada has closed the issue.
I am wondering if anyone else has gone through this and ifso, what did they do. It appears that my only possible way to get this resolved is through small claims court. Before doing this I am searching for advice and other possible alternatives.
Thanks
Seems to me if there is any doubt about the maintenance history of this car, they should know.
Regards
Darryl
Since they have told you no work was ever done, how can they deny you warranty coverage without admitting they are lying to you?
Are you sure this isn't the Canadian BMW dealer not wanting to do warranty work on a car that you bought in the USA?
Maybe there is an issue with you going out of the country to get your BMW for less, and they don't want to help you out, because of it. I'm just guessing, because most BMW dealers will fix any BMW under warranty, no questions asked.
If Edmonton BMW isn't in Canada, then never mind..
regards,
kyfdx
visiting host
Edmunds Price Checker
Edmunds Lease Calculator
Did you get a good deal? Be sure to come back and share!
Edmunds Moderator
1. Don't know if I got a bad set of front rotors or is something amiss in the front end. Any thoughts appreciated.
2. Is this transmission a GM Getrag or GM GM because I want to service it.
3. Which service reset tool is adequate. No service lights or indicators as of yet?
What's the problem? A vibration when braking? If so, it could be lower control arm bushings.
2. Is this transmission a GM Getrag or GM GM because I want to service it.
Well, there's no such thing as a GM Getrag; Modern BMW slushboxes are either built by GM or ZF. Your car has the GM A4S 270R, and it takes Dexron III ATF. My wife had a 528i with the same box and my local BMW dealer changed the fluid in it AND the final drive for $110.
3. Which service reset tool is adequate. No service lights or indicators as of yet?
I use the Peake Research R5/FCX-II. It works great, and only costs $149.
Mine: 1995 318ti Club Sport-2020 C43-1996 Speed Triple Challenge Cup Replica
Wife's: 2021 Sahara 4xe
Son's: 2018 330i xDrive
Good question about the vibration. It does not occur when braking but it is just riding at low speed as we are leaving the neighborhood. Its not my daily driver so I'll check further on this. I'll inspect the bushings as well. I am familiar with visual and checking for play at the bushing; are there other indicators?
I may have misspelled this name for the tranny company as I read in another post that GM (may have been Ford) bought this German company that makes or made transmissions for the BMW.
$110 seems like a good deal on a service, however I wouldn't have any fun. Secondly if I let my wife take this car into a dealership she assumes I have gotten in over my head and I would have to put gaurd dogs on our checkbook because she'll spend $1k if I suggest she take it in.
Wheel bearing, perhaps. The driveshaft fas a rubber coupling at the transmission as well as a center bearing.They should still be good on your car, but it is something else to check.
I am familiar with visual and checking for play at the bushing; are there other indicators?
Nope, that's pretty much it.
$110 seems like a good deal on a service, however I wouldn't have any fun.
I perform the minor maintenance and repairs on my cars and bike, but it's worth $110 to not have to deal with an ATF change. I assume that you know that there is no dipstick and that the fluid must be checked through the fill plug at the proper temperature. In any case, the gory details can be found here and here. BMW now calls for a ATF change at 100K, but I think that you are smart for changing it before then. If you are going to tackle the final drive I'd use a good synthetic 75W-90 gear oil. I have used Mobil 1, Red Line, Royal Purple, and Valvoline Synpower- and all have worked fine.
Mine: 1995 318ti Club Sport-2020 C43-1996 Speed Triple Challenge Cup Replica
Wife's: 2021 Sahara 4xe
Son's: 2018 330i xDrive
Mine: 1995 318ti Club Sport-2020 C43-1996 Speed Triple Challenge Cup Replica
Wife's: 2021 Sahara 4xe
Son's: 2018 330i xDrive
Mine: 1995 318ti Club Sport-2020 C43-1996 Speed Triple Challenge Cup Replica
Wife's: 2021 Sahara 4xe
Son's: 2018 330i xDrive
This trans would have the ID # A5S 325 Z
The GM 5L40E looks to be the earlier unit. So if ALLDATA is correct 3/00 is the cut-off date. I'd guess most 323s are indeed the GM 5L40E, but not yours, which is a fairly late build date.
I'm not sure if it has to do with the cold weather. It's happen to me twice now and my car is in the mechanic. Has this happen anymore to your car what did you guy do to fix.