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Here's how I averaged 31.5 mpg in a Ram HFE EcoDiesel

Few things could be more American than a bright red Ram pickup parked in front of Mount Rushmore. To get there and back on a single tank of fuel from the nearest major city, however, requires a collaboration of international proportions. This particular Ram is a 1500 HFE EcoDiesel, festooned with badges indicating the presence of an Italian turbodiesel V6 mated to a German eight-speed automatic. Some Rams are even built in Mexico, but this one only boasted a 27 percent Mexican parts content. A rather global truck, this one. It is the sum of its parts, but those bits and pieces were curated by a team of engineers in Michigan. At the risk of hipstering its history, the Ram HFE (High Fuel Efficiency) package was truly custom-tailored for one purpose: Achieving an EPA-rated 29 mpg on the highway, which is 1 mpg better than a standard Ram 1500 EcoDiesel. It did just that. No, it did better than that, but more on that in a minute. The Ram has stuck with its "son of big rig" styling for nearly 25 years; opting for the EcoDiesel V6 means you can fill up next to Peterbilts. My goal was to bypass truck stops entirely. I left Denver early in the morning and aimed to enjoy lunch with Washington, Jefferson, Roosevelt, and Lincoln looking over my shoulder before heading home for dinner. Mt. Rushmore is about 370 miles away from the northernmost truck stop within Denver, where I filled the Ram HFE's tank and headed northbound on Interstate 25 toward Wyoming and a series of smaller highways that roughly follow an old stagecoach route from Cheyenne to what is now Mt. Rushmore in South Dakota. The Ram was such a fuel miser that I could have driven an extra 50 miles each way and still avoided the pumps. It's beautifully stark country: the kind of desolate place where the FM radio does a lot of seeking; that's all the audio I had on board because the Ram HFE is decidedly lacking in comfort and convenience features. To get to an EPA-estimated 29 mpg highway figure, Ram engineers had to goals: To strip weight and improve aerodynamics. In the wind tunnel, the medium-size 4x2 Quad Cab with 20-inch wheels and the Ram Express trim level's one-piece front bumper proved the most aerodynamic configuration of the many flavors of Ram available. Interestingly, testing revealed that adding full-length tubular side steps and a tri-fold tonneau cover normally offered in the Mopar accessories catalog aid aerodynamics.

AEV Ram Prospector First Drive

Honestly, the trails that rise above Southern California's Rowher Flats aren't much of a challenge. You can still get yourself hurt if you do something stupid, but the trails are mostly hard-packed dirt with some rocks strewn about. No boulder crawling or river forging here. It's a place that's almost beneath the mighty abilities of the AEV Prospector Ram trucks I'm here to drive. American Expedition Vehicles (AEV) has long been in the business of building seriously capable Jeep Wranglers. Wranglers built for crossing Australia or crawling across the Moab. Wranglers converted into pickups and Wranglers done up in fancy Filson duds. They all have the kind of rugged good looks that project positive sunshine competence vibes about the people who drive one. That's no matter how big a dork the doofus behind the wheel actually is. And now AEV has moved on to modifying and producing parts and complete packages for Ram pickups. Because, why not? Actually AEV has been twisting on Rams since at least 2013 when it produced a Ram concept truck for that year's SEMA Show in Las Vegas. And what happened in Vegas hasn't stayed in Vegas. Sitting on the dust at one of the Rowher Flats assembly areas, AEV's two 2015 Ram "Prospectors" look as if they're making the horizon itself cower. It's not like we're going to be scuba diving today, but the snorkels that snake up each truck's right A-pillar are enough to make even the most jaded off-roader slobber in naked desire. These things don't just look great, they look epic – if Homer were around he'd put aside his Iliad to write up this drive. Reaching back into Dodge truck history – when Dodge trucks were Dodges – AEV has adopted the Prospector name for its modified Rams. Back in the late 1970s and through the 1980s Prospector had been used on various Dodge trim and equipment packages fitted to pickups, vans, and the Ramcharger large SUV. Yes, there were even Prospector packages for the Mitsubishi-made D50 small pickup and the Rampage pickup based on the front-drive Omni. The shovel and pick Prospector logo on the AEV vehicles comes straight from those old Dodges. The gray Ram 2500 crew cab is riding on 37-inch tall BFGoodrich Mud-Terrain T/As surrounding AEV's 17-inch Salta HD wheels and is powered by Ram's latest 6.4-liter Hemi V8. Rated at 410-horsepower by the factory, the gasoline-burning 6.4 Hemi is almost a throwback to the days before every three-quarter-ton and one-ton pickup owner became obsessed with turbodiesels.

The EPA has alleged that FCA installed undisclosed emissions software in about 100k Ram and Jeep diesel models [UPDATE]

Update: The text has been updated with official information from the EPA given in a press release and a conference call. Although an initial report from Reuters said the EPA will accuse Ram and Jeep of using emissions defeat devices today, that isn't quite the case. In a press release and a conference call, the EPA stated that the notice of violation sent to FCA is for the installation of eight undisclosed auxiliary emissions control devices on 2014 to 2016 Jeep Grand Cherokee and Ram 1500 models with the 3.0-liter turbodiesel V6. The violation applies to about 104,000 vehicles in total. The agency also explained that auxiliary emissions controls on vehicles are not necessarily illegal, but installing them without disclosing them to the EPA when having the vehicle certified is. Though this initial notice of violation is for installing undisclosed software, the EPA may soon also classify these emissions devices as defeat devices, as it did with the software Volkswagen used. Depending on the outcome of the investigation, there could be fines of up nearly $45,000 per vehicle involved in the notice of violation. The agency revealed that the software alters how the emissions system performs in certain situations. In controlled testing, the vehicles are compliant, but in conditions such as high speed operation, the EPA found the vehicles would produce much higher levels of NOx emissions. The EPA is continuing to investigate, and is waiting for FCA to explain why these emissions control devices are not cheating or defeat devices. In an official statement, FCA stated it is looking forward to explaining that the software does not constitute a defeat device, and has also proposed software updates to achieve compliance. During the conference call, EPA representatives also noted that the vehicles are still safe and legal to be driven, and that owners do not need to take any action yet regarding their cars. It should be noted there is no stop-sale on current models at this time. Additionally, 2017 versions of the 3.0-liter diesel FCA vehicles have not been emissions certified yet. Related Video: News Source: Reuters, Environmental Protection Agency Government/Legal RAM