First drive Ram 1500 diesel

Turtle n Peeps wrote:

goducks10 wrote:
If the 2014 Ram with DEF only gets 16-18 mpg hwy then it looks like the DEF is only a bonus for less regens. My 12 CTD gets 16-18 mpg hwy all day @70 mph. 18-19+mpg running 55-60.

Auto manufactures run the same dyno load program for fuel economy tests so it's apples and apples.

IOW's it's all relative. Some may get more than the EPA sticker, some might get less, but on average, the average person is going to get right at the EPA sticker. If you drove the 2014 Ram the same way you drove your 12 it would get better mileage. DEF allows the tune to be a lot better so they can pick up mileage without being dirtier. Win-win.

The gossip I'm hearing (nothing scientific) says the 2013-2014 Ram 2500/3500 6.7 trucks (with DEF) are getting about 1-2 mpg better fuel economy (empty) than their 2012 counterparts (without DEF).

Ref your comment about EPA testing, the EPA doesn't do fuel economy tests on vehicles with a GVWR of 8,500 lb. or higher. Unfortunately, the GVWR on nearly all 3/4 ton (and larger) trucks exceeds 8,500 lbs. Wish the EPA would include them. Certainly would make it easier to shop & compare new trucks from the Big 3.