Aside from the coin flips over who’ll ride shotgun or get stuck in the back seat, one of the biggest concerns with road trips is how many times you’ll have to stop to fill up the tank. And while electric vehicles might seem like a viable option for offsetting that pain at the pump, finding charging stations can be a challenge. That dilemma has sparked a growing interest in diesel vehicles—and we recently got behind the wheel of three that just might convince you to make the switch.   

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Boldly Unique: Audi Q7 TDI
This ride embodies everything that we’ve come to love about Audi in a more fuel-efficient crossover. The full-size vehicle features all the technology and luxury amenities that have helped redefine Audi over the past few years, plus a performance package that gets 28 miles per gallon on the highway (compared to 22 mpg highway with the standard Q7 V6 engine). For 2015, the TDI model has received a number of luxury enhancements as part of the Q7 line-up.

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King of the Hill: Jeep Grand Cherokee EcoDiesel
With nearly 1,700 miles logged on the road in a 2014 Grand Cherokee EcoDiesel, we can see why the buzz on this vehicle is so high. The new diesel Jeep, which has earned a number of awards since launching in 2013, features a 3.0-liter V6 engine that gets up to 30 mpg on the highway with a driving range of more than 730 miles. Packaged with the premium features in the Overland edition, the SUV is as impressive sitting in the back watching a flick on one of the rear seat video screens as it is when comes to fuel economy.

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Subtle Overachiever: Volkswagen Touareg TDI Redline
A little more on the conservative end when it comes to exterior styling, the Volkswagen Touareg TDI is no less impressive when it comes to avoiding those cash-sucking gas pumps on the road. The mid-size vehicle is packed with all the new interior features that have broadened the appeal of VW in a vehicle that gets 31 mpg on the highway. Coupled with the surprise performance that comes with the Redline badge, the Touareg TDI is further proof that you can’t always judge a book—or vehicle—by its cover.