In the recent MotorTrend FX35 7AT review, the 4260lbs FX was able to get 6.1 and 14.6. So my guess for the G37 7AT will be around 5.2 and 13.7.

 

It might be slower than our 5AT because you have to take into consideration the time it takes for the transmission to shift gears. Whenever you have more gears to grind through, it can make enough of a difference to make the car slower in certain areas.

Look at the EVO and STI a few years back when the EVO came in a 5spd transmission and the STI came with a 6spd. The STI beat the EVO because of the extra horsepower in the 1/4 mile, but the EVO won in all track events because of the shorter gearing. Longer gears aren't always better...maybe for increasing a little gas mileage but for performance I'll stick with the 5AT, more readily available torque for me

 

The Evo was faster not due to gearing but because it had a better suspension. The Mercedes 7AT pruduced noticeably better times over its 5AT counterpart when it first came out. Lets not kid ourselves. The new G will be faster than the current G because it will have more hp, more gears, and probably a faster shifting tranny. Newer tech will always be better than its predecessors.

 

that's a good point about the suspension. and you're right for the most part about newer tech being better than its predecessors, but that's not always the case (EVO IX vs EVO X). the new G probably will be faster, but you never know until the numbers come out. i thought the G37 would be hitting 13.5 in the 1/4, but it's doing 13.9 just like us so you never know

 

I want the 7speed that comes in the g35 (i think 03 and 04) in japan. They never brought it to the US.

-Sean

 

The notion that the 7 speed will be slower has no merit. The IS350 with slightly more torque and 6 gears is slightly faster than the G. The FX50 with 7 gears did 0-60 in 5 seconds. There is no loss in perfomance there. I am nogt going to hesitate in upgrading to the G37 from my 08

 

no merit? okay here is reasoning, when a transmission switches gears it isn't seamless and there is a delay...if i had a 10 speed AT would that do a 0-60 in 1 second? who will win if a car had the same engine but one had 5at and the other had 10at? from your assumptions, the 10at guy would win, but some of us know there are other factors that will determine the winner of this race

and again, i'm not saying they're going to come out with something slower but you can't just assume something is better because it's newer or has more number of gears.

you're taking my comments out of context, you can't just base straight line speeds from the number of gears in a transmission is what i'm trying to say. there is more to a car's performance numbers than just the transmission. tires can make a bigger difference IMO.

 

I think my logic makes sense, IS350 faster than G despite 6 gears. It weighs more and it has more torque but I think these 2 balnce each other out. Real world example of y more gears dont necessarily equate to slower trap time, both are 3.5l engines (different technology, yes I know)

Your reasoning makes sense but why look at the theory when there are real world examples out there. I believe the 3.7l coupe is just as fast as the G35 from 0-60, so if the G37 sedan weighs less than the coupe it should be pretty fast, I doubt the extra gears will be a problem because it will not need all 7 gears to get to 60mph or even 100mph. I doubt it will ever get to the 6th gear at 100mph.

from your assumptions, the 10at guy would win, but some of us know there are other factors that will determine the winner of this race

Not even going to comment on this

 

more gears = better. Better powerband = faster. 7AT will be faster than 5AT or even 6MTs.

 

exactly

 

5AT? probably
6MT? thats iffy... the AT will weigh more, and you do get more drivetrain loss.

 

lets wait & see

 

Don't forget about the gear ratios:

Current 5-speed AT's gear ratios:

(V6)
1st – 3.842
2nd – 2.353
3rd – 1.529
4th – 1.000
5th – 0.839

New 7-speed AT:

(V-6)
1st – 4.92
2nd – 3.19
3rd – 2.04
4th – 1.41
5th – 1.00
6th – 0.86
7th – 0.77

It will be very quick from 1, 2, and 3rd gears in the 7AT.

 

Do you know the final drive ratio?

 

these type of threes are fun to read