Earlier this week, we heard that Mercedes-Benz will be introducing its nine-speed automatic transmission in Europe, but while this 9G-Tronic will first launch over there in the E-Class, we'll get our first crack at this gearbox in the 2015 CLS-Class. According to Edmunds, the nine-speed CLS will go on sale in the US next fall before eventually spreading to almost all other Mercedes models, but there is no word as to when this would occur.

The current CLS uses a seven-speed automatic, and the 9G-Tronic's extra gears will help improve fuel economy. Looking ahead, Mercedes said in a press release that this transmission is suitable for use in a broad range of models, both rear- and all-wheel drive and even hybrid and plug-in vehicles.


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  • 61 Comments
      gKamine
      • 1 Year Ago
      I wasn't aware there were this many engineers trolling AB :rollseyes: 9 speeds doesn't mean 9 continuously shifting gears. Modern transmissions have sophisticated programming when compared to a traditional automatic. Modern transmissions chooses the appropriate gear for both up shifts and down shifts with no set pattern like in the old days where a typical 4 speed would go 1,2,3,4...3,4...2,3,4... and so forth. Even though the transmission has 9 speeds to choose from, rarely (if ever, depending on the programming) will the transmission actually use them all in order.
        ferps
        • 1 Year Ago
        @gKamine
        Right, but that means that trying to choose gears yourself with paddles is basically pointless.
      k_m94
      • 1 Year Ago
      I don't see how much further increasing gear counts on automatics would contribute to either better acceleration or fuel economy. Pretty sure modern engines have a wide enough powerband to have the right amount of torque and efficiency over several thousand rpm, you dont need eleventy million gears to stay in a tiny rev range like a big rig. And more gears=bigger, heavier transmissions, more frictional losses maybe, more time spent cog swapping thus less smooth acceleration (seriously, would you like to hear and feel your car juggling so many gears just pulling away from a stoplight?). How much fuel could possibly be saved cruising on the highway in quintuple overdrive versus triple overdrive? Reducing internal frictional losses, speeding up gearchange times, keeping roughly the same gear ratio spread and better computer management of the shifting would save as much if not more fuel on the EPA test cycles, and a good driver would probably still beat that with a manual in the real world.
        oRenj9
        • 1 Year Ago
        @k_m94
        Adding a gear to an AT is not like adding one to an MT. The design of the AT makes it pretty easy to start adding more gears without changing the size of the transmission.
      Dave D
      • 1 Year Ago
      Is it just me, or does this car look like a sedan that is slowly melting?
      Joe Liebig
      • 1 Year Ago
      It's a simple regulatory requirement. More and more countries will enforce fleet-average mpg standards, so manufacturers have to optimize mpg no matter what. Thank governments for turbos vs naturally aspirated and for the gear-number horse-race.
      kcroc10077
      • 1 Year Ago
      The first gen CLS looked great. This one, not so much.
      Eta Carinae
      • 1 Year Ago
      One would think they would introduce the 9 speed with the new S class vs the CLS........wonder why they went this way and didnt wait....
      • 1 Year Ago
      [blocked]
      ferps
      • 1 Year Ago
      Once you have this many gears, paddles become pretty useless. There are just too many gears to bother trying to shift yourself.
      Puck
      • 1 Year Ago
      At some point the car will be constantly changing gears - or they add a reduced gearchange button. 9 or 10, I think it's about enough. I could be wrong though.
      VROOOM!
      • 1 Year Ago
      Where is the DCT??? It almost seems like developing on old technology to continue to make regular automatics.
        wilkegm
        • 1 Year Ago
        @VROOOM!
        DCTs don't have the shift quality and feel desired by most MB customers. They have their place, but in a Benz ain't it.
          • 1 Year Ago
          @wilkegm
          [blocked]
          Joe Liebig
          • 1 Year Ago
          @wilkegm
          except in the younger A and CLA
      Ben Lee
      • 1 Year Ago
      bad sequel, hopefully part 3 is better.
      groingo
      • 1 Year Ago
      It will be a flop if it ever gets to the American market, American's can't count that high!
        Spartan
        • 1 Year Ago
        @groingo
        I guess you're right. We only need to count to three before we send a precision guided missile through your window.
        dea5787
        • 1 Year Ago
        @groingo
        Your comment is so patheitc it speaks major volumes to the lack of character you have.
          Ziv
          • 1 Year Ago
          @dea5787
          dea, were you replying to Groingo as it appears? If so I would agree. Spartan was a tad acerbic, but I kind of like his attitude.
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