Birdwatcher

I'm thinking of trading my '08 JK w/6 spd. and wondering about the possibility of the 3.6 with a a 5 spd. automatic this time. Any experience or comments on this would be appreciated much. I'm thinking Rubicon unlimited. Is the 4:10 gear available? I did not like the old '08 auto trans at all. It might be nice to NOT have to shift for while. And a second thought while I'm here- has anyone heard any decent feedback on fuel mileage on a 2012, soon to be 2013?

Rickd300mag

Bird:

My rubi came with the 4:10 gears. Lifted it and put some 35 in rubber on it. Great setup! The motor is great

thx1158

You may want to search the forum. There has been some discussions on this. Yes 4.10's are optional. I have a 12 JKU rubicon with 3.73's and I'm very happy with it. Last jk was a 10 Rubicon with a stick.

arjeeper

Go drive one. The Pentastar/5 Speed auto combo is great. I've always felt my Jeeps lacked power, and after a couple test drives I felt this may be the first one that was sufficient, and I promptly ordered one (still waiting).

Yes, the 4.10 axle gearing is available, but only on the Rubicon. The Sport is offered with 3.21 or 3.73. You can also get a Rubicon with the 3.73 if you'd like.

Blues 2

3.6 auto is an improvement. I have the 3.6 auto with 3.73s. I'm coming from a 3.8 auto with 4.10s. The new combo makes the Jeep a totally different experience.

My mileage improved considerably over my 08, but my 08 never averaged close to 14 city as advertised. My rubicons were and are currently stock.

I'm reading Jeeps with the 3.6 and 4.10s are not needing a regear when adding 35s.

Jfh1976

I have a 2012 JKU R and have 35s. The power is still there, although it does drop to 4th more often going up hill. I can still merge with and pass traffic at will. Mileage dropped from mid 15s to mid 14s average.

Rickd300mag

Do u have the 410 gears? Just curious. I'm pretty sure the rubi has the 410 gearing. I could be wrong !

thx1158

No the 2012 Rubicon auto is 3.73 standard with 4.10 optional. I test drove the 4.10 and the 3.73 with the auto and there isn't a ton of difference.

PGT

I've got the 3.6L/auto combo with 4.10's and stock Rubi tires. Acceleration is adequate....no good, not bad. it feels a little slower than the vehicle this replaced (a 2010 FX35 AWD), which in my opinion....not too bad. I had a choice of manual and auto and would have liked the extra performance of the 6sp but also realize I'm not 25 anymore and hate clutching in traffic. Maybe I'm going soft...

PGT

exactly. my daily driver was the Benz and it hits the 1/4 in 12.9, so anything else I drive will be slow.