David MJ Ko

Hi guys
So it looks like the new 9 speed transmission came out just after i purchased my new 2016 c class which comes with the old 7 speed transmission.
What are the major differences? Would i be hitting the ground after the new 9g trans?
Any feedback's would be much appreciated

equetefue

It seems acceleration wise the gains are marginal, but the gearing seems to be more aggressive to assist with that 0-60 measure.

As far as the slushbox itself, I had the 7G in the CLS I traded for the 43', and I can say that when driving normally the gears come rather quickly and it almost feels as too many. I have also noticed that it is not as refined as it should be specially 1st gear.

These are just personal observations.

unr1

isn't it true that the 9g won't use first gear in comfort or eco modes?

edit: it's true for the 7g.

ManiacGT

my 7g (which frankly is garbage on my c200) always uses D1 in any mode.

equetefue

haven't paid attention on the 43', but on the CLS the 7G in comfort starts on D2

Mr. J

Different gearing for the 4cyl models.
All the 4cyl cars with 7g use 1st gear in comfort. All of the 6 and 8cyl cars with 7g start in 2nd gear while in C. I haven't driven a 4cyl with the 9g yet.

gianton

My 2013 4 cyl S204 C250 CDI 4Matic uses 2nd gear in Economy mode and 1st gear in Sport mode.

guhvies

The question is does this apply to the 205's?

richysh

W213 4cyl uses d2 at start on 9g but not the w205 4cyl 7g

Igotsoul4u

I have driven the 9spd in a C300, GLC300, and E300. I don't think it's worth losing a ton of money over. I was toying with the same idea and trading up to a C43 to get the 9spd but I would lose so much money for a slight improvement. It is however an improvement in a couple ways. The shift points are smoother but obviously more frequent. No bumpy 2nd in to 3rd gear. Someone mentioned above that it seems a little weird to hear/feel that many gear changes and I sort of agree. Still, if I could switch with a small payment difference I would do it.

C43pleasehelp

is it worth to make sure I buy a cls550 with the updated 9 speed transmission? will I be able to be a mid 11s car with a awd 2017 cls550 with ecu tune from renntech?

altay

7g 0-60 6 seconds
9g 0-60 5,8 seconds

not a huge difference. Also on freeway while driving at 85 mph with 7g your engine will go around 2500 rpm, with 9g probably 2000-2100 rpm. Little quiter and better economy.