New for 2007, Jeep brought a four-door version of the popular Wrangler on to the market.

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It's 20.6 inches longer and has much better accommodations for rear-seat passengers.

Unlike the regular two-door four-wheel-drive Wrangler, the Unlimited can be had with just two-wheel drive powering the rear wheels.

Otherwise, most of what can be found on the regular Wrangler can be found on the four-door Unlimited.

Three trims are offered: X, Sahara and Rubicon.

One engine supplies the power to all. It's a 3.8-liter 60-degree V6 made of cast iron for robust performance and durability. Output is 202 horsepower and 237 pound-feet of torque and is routed through a standard six-speed manual or optional four-speed automatic transmission.

A 140-amp alternator provides ample power for off-road accessories such as lighting, winches and more.

Jeep's Command-Trac and Rock-Trac are the systems at work on four-wheel-drive models. Rock-Trac is the incredibly capable one and is standard on the Rubicon model.

Fuel mileage is estimated at 15 miles per gallon in the city and 19 on the highway, regardless of transmission.

Available comfort and convenience amenities include a 368-watt seven-speaker Infinity sound system with subwoofer, stain-resistant premium cloth seats, leather-wrapped steering wheel, alloy wheels and a Sunrider soft-top roof that allows the roof to be partially open like a sunroof.

The MyGIG infotainment system is also available, with a navigation system, touch-screen LCD monitor and a 20-gigabyte hard drive for storing lots of music.