Fuel Economy Update for July - 2014 Ram 1500 EcoDiesel Long-Term Road Test
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2014 Ram 1500 EcoDiesel Long-Term Road Test

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2014 Ram 1500 EcoDiesel: Fuel Economy Update for July

August 7, 2014

2014 Ram 1500 EcoDiesel

Thanks to a long road trip our 2014 Ram 1500 EcoDiesel racked up 3,795 miles in July and consumed almost 173 gallons of diesel fuel. That works out to 22.2 mpg, slightly below the truck's 23 mpg combined rating. We also added diesel exhaust fluid on multiple occasions.

We made incremental improvements by increasing the Ram's best range from 600 to 607 miles and improving its best fill from 25.4 mpg to 25.5 mpg. Small gains, which is surprising given the 3,000-mile road trip the truck endured last month.

The road trip, which began in Southern California and headed north into Nevada, Arizona, Utah, Idaho and Wyoming, covered few miles that we would consider ideal for fuel economy. Across the Nevada and Arizona deserts temps were above 100 degrees and continued that high into Northern Utah. Plus, that leg of the trip includes thousands of vertical feet of climbing. Once we hit Wyoming we encountered 20 to 40 mph head and crosswinds.

It wasn't until the next tank through Eastern Idaho and back to central Wyoming when we finally encountered conditions enabling the fuel economy the truck promises. Milder temps and flat roads let us witness a few hundred miles of fuel economy beyond 30 mpg. Even so, those conditions were short lived and drug the tank average down to 25.5 mpg, which is still our best yet. Also, both Wyoming and Utah include hundreds of miles of 80-mph freeway. Overall fuel economy for the trip, which was almost exclusively highway miles, was 23.2 mpg.

2014 Ram 1500 EcoDiesel

It's worth noting that at about 9,000 miles the truck has consumed about 11.5 gallons of diesel exhaust fluid, slightly more than the amount of fluid Chrysler claims the engine will consume during "normal" (8 gallons/10,000 miles) use. We've purchased the fluid from auto parts stores as well as from the dealer with prices ranging between $6/gallon and $9.75/gallon (including the cost to dump it in the tank).

Worst Fill MPG: 17.4
Best Fill MPG: 25.5
Average Lifetime MPG: 22.6
EPA MPG Rating: 23 Combined (20 City/28 Highway)
Best Range: 607.3
Current Odometer: 8,984

Josh Jacquot, Senior Editor @ 8,984 miles


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