I'm on my second 1500 with the Hemi.

by Hoot , Diversityville, Liberal-sota, Monday, August 19, 2013, 08:45 (4058 days ago) @ brionic

I love that motor. The '05 was rated at 345 horse and was a ball to drive. For the '12, they snuck in another 45 ponies and it's that much more fun. I routinely got about 15 mpg for mixed driving in the '05. Actually nudged 20 mpg crusing at a steady 60 in the UP. Put about 140k on it with nary a problem. One mysterious ground failure--simple to fix once the shop found it and not what I'd call an "engine problem" but it absolutely killed driveability.

The '12 has the cylinder deactivation business and I can easily get 20 mpg out of it on the hiway. 10k on it with nothing to note.

I don't put an awful lot of thought in milage. A fella has to drive a lot or gas has to cost a lot more that it does before you save any significant money. Both engines will happily gulp lots of fuel if you stick your foot in them but it sure is fun.

I don't know a thing about the Pentastar but I wouldn't look at anything other than the Hemi were I buying...but that's me.