If you need full-size, the new Dodge 1500 has an "Ecodiesel" option in a few more months. 3.0L turbo diesel:
2014 RAM 1500 EcoDiesel V6 | Diesel Engine Truck | RAM Trucks
You can also get the Jeep Grand Cherokee with the same engine, EPA 30mpg hwy.
2014 Jeep Grand Cherokee | Eco Diesel Engine Capabilities | Jeep