All one needs to do is Google
here let me help a brother out and you will see for yourself. Like ZF said after 8 there just is not enough return in efficiency to make it worth the effort. Ford is using a in house 8 speed for their front wheel drive cars
Ford Authority wrote:
But Ford has yet to use the nine-speed automatic transmission, despite having just revealed freshened-up versions of the Edge and Transit Connect. The reason? According to a recent article published by Automotive News, Ford didn’t see enough extra efficiency from the new transmission’s ninth gear to justify the extra cost and weight. Ford has instead come up with a pair of eight-speed automatics to serve in the GM transmission’s place.
There is a class action against GM over their 8 speed? I thought they were going to use the Ford ten speed? So let me get this straight, Ford and GM decided to team up to defer the RD costs of coming up with their own transmissions. With Ford taking on the 10 speed and GM doing the 9 speed. Now after the dust clears GM is running it's own 8 speed in their RWD vehicles (trucks and big SUV's just like FCA) over the ten speed of Ford? Ford decides they are going to build their own 8 speed for use in the FWD cars because like ZF they understand their is no justification for a 9 speed.
Note should read 10 speed not 9. WTH so tell me again why Ford and G.M. supposably teamed up? You just can't make this sh*t up. Bottom line it looks like even numbered gears is the way to go. I did test drive a new Jeep Cherokee with the 9 speed and didn't have any issues with the transmission in it. But it was a 2019 so maybe FCA has figured the trans tune out in the 9 speed now.
Don