The EPA hasn't officially tested the Ram 1500 EcoDiesel, but luckily for us Motor Trend Magazine has. When subjected to the Motor Trend Real MPG test, the Ram 1500 EcoDiesel put up an impressive 28 MPG on the highway.
Motor Trend's MPG test involves an "88-mile drive cycle" to simulate real world driving. First the four-wheel-drive Ram 1500 EcoDiesel ran through the test and came out with a rating of 19/26/21 MPG city/highway/combined. That's much better than the Ram 1500 4x4 that runs on a Pentastar 3.6-liter V-6, which gets 16/23/19 MPG.
Next is the rear-drive Ram 1500 EcoDiesel. It posted 18/28/22 MPG. Compared to the rear-drive Ram 1500 with the Pentastar V-6, which the EPA rates at 17/25/20 MPG. You can see that the EcoDiesel really improves over its gasoline-powered predecessors.
The Ram 1500 EcoDiesel produces 240 HP and 420 lb-ft of torque with its 3.0-liter turbodiesel V-6. It's biggest draw is its amazing fuel efficiency though. The truck's towing and hauling capabilities aren't sacrificed for this fuel efficiency either. Depending on a few factors, Ram says that a 1500 EcoDiesel will tow up to 9,200 pounds, which is 1,750 pounds more than the highest-rated 1500 V-6.
Now, these numbers aren't official EPA ratings, but often times real world MPG figures are more reliable than EPA ratings anyway. Ahead of EPA ratings, Ram said that they were confident that the Ram 1500 EcoDiesel would get rated at or above 27 MPG on the highway.
Does this match up with what you guys are experiencing in your trucks?