I was wondering what other owners think about this. Do you guys think infiniti should have made the new g35 a 6 speed auto transmission? i didn't check if someone made a thread about this before but i think it would have made a difference in the performance, or at least in the gas mileage of the new auto sedan. Just curious..

 

Or add an electronic overdrive.

 

i would have loved a 6th gear. It would have helped gas mileage BIGGG time. but i guess they didnt bother and went straight to making 7-gear...which comes out on the next model.

as far as performance, i think it would have been equal..give or take .3 seconds or so....its more weight. I would think its a faster revver going through the gears

 

the 7 sp auto sounds great

wouldn't help me out too much since i drive mostly city...

 

Depends how much the R&D would have added to the cost of each car, but yeah, I'd like to have an extra gear or two.

 

Is this confirmed anywhere or still just speculation?

 

speculation

 

unless you're in europe, lol

 

They have a 7 speed auto on the JDM 350GT.

 

I don't believe it's going to improve gas mileage that much and most of the gains would be seen at highway cruising. At the most I'd say 2 miles a gallon.

 

imo they should have made it 6 gears. i havent heard about 7 speed but thats awesome. comparing to the is350, the 335i etc, isnt the new g35 sedan the only one in that bracket to be a 5 speed auto? I think it would have weighed it down a little but gas mileage would have def gotten better, if you are going 75-80 your rpms are already at 3K....just speculation..

 

The gas mileage does not improve by any wide margin. The automatic 08 5 speed G35 is rated at 17 city 24 highway. The automatic 08 6 speed IS350 is rated at 18 city 25 highway. The automatic 08 6 speed 335i is rated at 17 city 26 highway. There is virtually no difference as far as fuel economy when comparing the G35's fuel economy only having a 5 speed auto compared to the competitions 6 speeds. We'll see what happens with the new 7 speed auto. It might improve the fuel economy by 1 or 2 mpg but it might not depending on how it is geared, etc... Infiniti does not really seem to be interested in fuel economy. If they were they'd offer a less powerful more fuel efficient engine in the G35 like Lexus and BMW already do.

 

adding another gear would not significantly alter the top gear ratio/final drive...just fyi. a 7spd auto just tightens ratios up a bit so you have less of that "always in the wrong gear" sensation. the top gear does tend to get slightly taller, but you're not likely to see a significant difference in gear ratios between the top gear of a 5spd auto and one from a 7spd auto, differing final drives being taken into account