2014 Ram 1500 EcoDiesel: Potential Range from Here to Texas
May 19, 2015
If you're driving a 2014 Ram 1500 EcoDiesel, your stops for fuel can be rather infrequent. In the year that we've had our truck, we've averaged 436 miles between fill-ups. The furthest we've gone on one tank is 700.2 miles, back in November when Travis Langness drove up to Northern California.
I've been wondering, though: How far can you potentially range in a Ram 1500 with the diesel engine?
The EPA's fueleconomy.gov site lists range as part of its detail for vehicles. For the Ram 1500 4WD with the diesel V6, it shows a potential range of 572 to 704 miles. That's a calculation of the combined fuel economy rating (22 mpg) multiplied by the fuel tank capacity. The Ram offers two tank capacities, 26 gallons or 32 gallons, and that's why two range distances are listed.
Of course, you can get bigger numbers by using the estimated highway MPG and doing the math. Travis's 700-mile, mostly highway drive was based on getting 27.8 mpg from 25.147 gallons of fuel. EPA-estimated highway fuel economy for our truck is 27 mpg.
There's also the rear-wheel drive "HFE" version of the Ram 1500 EcoDiesel that gets an EPA-estimated 29 mpg on the highway. Here, max theoretical range (with the larger 32-gallon tank) balloons to a rather outrageous 928 miles of driving before the need to refuel. That's enough from LA to the Texas border, then halfway back across New Mexico (Update: as noted in the comments, I later discovered that the diesel's DEF tank precludes the fitting of the larger tank. So we're back down to a maximum of 754 miles with the rear-drive HFE. But you'll still make it to Texas — Brent).
How does the Ram compare to other long-distance champions? A rear-drive 2015 Ford F-150 with the turbocharged 2.7-liter gasoline V6 and optional 36-gallon tank appears to have a better potential range of 936 miles.
And here a few other diesel-fuelled vehicles and their potential highway range if you're curious: Mercedes-Benz E250 BluTec (886 miles), Audi A8 TDI (857 miles), Volkswagen Passat TDI (777 miles with DSG) and Porsche Cayenne Diesel (766 miles).
Brent Romans, Senior Automotive Editor @ 31,464 miles