I looked at it but for the price premium they want I can get a 1500.
Seems like I read somewhere that the projected mileage for the diesel Colorado is only marginally better than the eco diesel. Compared to what you give up going from the full size half ton to the Colorado in room and capability not sure how it will be received unless it really does get a lot better mpg.
This.
The midsize GM twins are getting a diesel, however it'll be a 4k premium on the already pricey midsize. To get halfway decent features plus the diesel, you'll be looking at close to 40k. With the discounts you can get on a 1500, you're paying the same if not less for more truck/features. And, unless you do a lot of driving, the projected 10mpg better will take years of ownership to break even due to the premium for the diesel.
That said, the numbers out so far on the GM twins are better than the ecodiesel. Reports are mixed driving in the high 20's to low 30's. Payload and towing are beating the ecodiesel iirc.
That said, it's a GM and a first gen for the diesel (when it comes out, thanks to VW I suspect not until early next year) -- the current model that has the gas engine has already seen a few recalls... so buyer be warned.
Back to the EcoDiesel...
There's a premium on them as well. I think 4k iirc. So any Ram you get, add 4k to the price. Plus most incentives are for gas only, so you loose out on those as well. However, 2015's are being discounted if you look online, the 2016's when they hit wont be -- so limited time frame to pick one up.
My mentality of it all is this...
Gas gets 17-20
Diesel gets 25-28
5-10mpg for at least a 4k premium is a lot upfront. If you are the typical buyer (like myself) who trades in every few years, it's very very possible you wont see a financial benefit in the long run for the diesel (short term, of course because you're paying less at the pump).
If payload and towing aren't as big of a deal to you, I'd suggest looking at the Ram V6. That Pentastar is a solid engine that gets anywhere from 17-22mpg. The only downside is the new 9speed transmissions stink. Don't ask me how I feel about my Cherokee (pilot vehicle for the new trans before they rolled them out) I bought last year...
The 2.7ecoboost in the new F150's has been well received this past year from what I've been seeing online, definitely worth taking a look at. I've bought Chrysler vehicles the past few times and have been closely looking at Fords lately.