With its newly available turbo-diesel engine, the Range Rover Sport becomes a choice car for a road trip, pulling in 6 mpg better on average than its gasoline-fueled equivalent.

Published: / Caption: / Photo: Marc Ganley/Roadshow

With its superior fuel economy in mind, we drove over 2,500 miles, from California to Idaho and back, through desolate places like Nevada's high desert.

Published: / Caption: / Photo: Wayne Cunningham/Roadshow

The veterans' park in Winnemucca, Nevada, hosts vintage military equipment, including a Huey poised over trees.

Published: / Caption: / Photo: Wayne Cunningham/Roadshow

Shoshone Falls, southeast of Boise, Idaho, runs through the Snake River Canyon, just south of where Evel Knievel attempted a jump across on a rocket cycle.

Published: / Caption: / Photo: Wayne Cunningham/Roadshow

The Shoshone Falls park offers excellent views from numerous locations.

Published: / Caption: / Photo: Wayne Cunningham/Roadshow

With the Range Rover Sport Td6's V6 diesel engine, we ended up with an average of 27.6 mpg for this 2,500-plus mile road trip.

Published: / Caption: / Photo: Wayne Cunningham/Roadshow

North of Boise, Idaho, the RoadsideAmerica website pointed us to this grounded DC-3.

Published: / Caption: / Photo: Wayne Cunningham/Roadshow

The Range Rover Sport easily trundled up a muddy fire road and made it under this fallen tree.

Published: / Caption: / Photo: Wayne Cunningham/Roadshow

With its Terrain Response System and advanced offroad equipment, the Range Rover Sport is much more capable than its upscale interior would suggest.

Published: / Caption: / Photo: Wayne Cunningham/Roadshow

The Columbia River is a wide waterway dividing Washington and Oregon, leading to the coast.

Published: / Caption: / Photo: Wayne Cunningham/Roadshow
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With its air suspension, the Range Rover Sport delivers a very comfortable ride on the highway, and increases its ground clearance for offroading.

Published: / Caption: / Photo: Wayne Cunningham/Roadshow
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Land Rover has a storied history building offroad capable vehicles, although in recent years the emphasis has also been on luxury.

Published: / Caption: / Photo: Chris Paukert/Roadshow
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Side vents accentuate the sporty look of the Range Rover Sport.

Published: / Caption: / Photo: Chris Paukert/Roadshow
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The 3-liter V6 diesel engine uses a turbocharger to produce 254 horsepower and 443 pound-feet of torque, and brings in 22 mpg city and 28 mpg highway.

Published: / Caption: / Photo: Chris Paukert/Roadshow
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Headlights include automatic high beams, that automatically switch to low beams for oncoming traffic, or when overtaking slower traffic.

Published: / Caption: / Photo: Chris Paukert/Roadshow
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With cushy leather-covered seats, the Range Rover Sport lends comfort to long trips.

Published: / Caption: / Photo: Chris Paukert/Roadshow
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An independent suspension makes for more comfort and better handling than a vehicle on solid axles could offer.

Published: / Caption: / Photo: Chris Paukert/Roadshow
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Smaller than its sibling, the standard Range Rover, the Sport version has reduced legroom for the rear bench.

Published: / Caption: / Photo: Chris Paukert/Roadshow
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The cargo area holds 27.7 cubic feet with the rear seat up, and a maximum of 62.2 cubic feet with the seats down.

Published: / Caption: / Photo: Chris Paukert/Roadshow
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Land Rover opts for simplicity in the Range Rover Sport's dashboard, limited the number of buttons.

Published: / Caption: / Photo: Chris Paukert/Roadshow
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The instrument cluster includes an LCD in the center for trip data and other information.

Published: / Caption: / Photo: Chris Paukert/Roadshow
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An eight speed automatic transmission is the only gearbox available for the Range Rover Sport.

Published: / Caption: / Photo: Chris Paukert/Roadshow
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The Terrain Response System relies on a console-mounted dial, letting drivers select a program for the current conditions.

Published: / Caption: / Photo: Chris Paukert/Roadshow
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Published: / Caption: / Photo: Chris Paukert/Roadshow
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Published: / Caption: / Photo: Antuan Goodwin/CNET
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Published: / Caption: / Photo: Antuan Goodwin/CNET
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Published: / Caption: / Photo: Antuan Goodwin/CNET
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Published: / Caption: / Photo: Chris Paukert/Roadshow
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