2011 GMC Yukon

Yukon XL are 20 inches longer than standard Yukons, and the extra length goes right into the rear windows and metal, which takes the shape out of balance, but it's still nicely drawn.

The interior of the GMC Yukon is also very straightforward, and has a more rounded, simple style instead of the upright, macho, machine-shop look that some other models sport. The Yukon's interior has slight differences depending on seating configuration, but they all get the same nicely styled interior, with wood grain trim, tightly grained plastics, and soft, upscale-looking upholstery on offer. Denali versions add more luxury touches, like a honeycomb grille up front and Nuance leather and chrome details to the cabin.

With the standard engine the 2011 Yukon can move quite quickly, and its six-speed automatic transmission provides rapid acceleration and good responsiveness. All Yukon SUVs can be ordered with available four-wheel drive. A single-speed transfer case system is standard on Yukons; a two-speed transfer case is an option on Yukon and Yukon XL; and Denali editions come with on-demand four-wheel drive.

On all versions, the steering feels light but not communicative, and bumps are positively smothered by the massive curb weight and big coil-spring suspension. The GMC Yukon Denali models all get GM's Autoride electronically controlled damping system, which does a great job bringing good ride comfort and decent steering response through the big 20-inch wheels. Overall, the Denali isn't tremendously maneuverable, but it handles surprisingly well on back roads; you'll quickly forget that you're piloting a 6,000-pound vehicle that can tow up to 8,600 pounds.

In either version, the third-row seat doesn't actually fold into the floor when not in use; it needs to be lifted out of the vehicle, which is really a job for two people. With the third row removed and the second row folded, the Yukon XL has a huge 137.2 cubic feet of cargo space, and there's still respectable room for cargo with people in all three rows. Keep in mind that in the standard-length version, there's very little space behind the last row; it has 108.9 cubic feet with the second and third rows down, but just 16.9 cubic feet with the third-row seat raised.

Another problem with the Yukon XL's length is that many city dwellers or even those who frequent shopping malls might find it simply too large to fit easily into conventional parking spaces—or maneuver through tight city streets.

Ride quality in the Yukon is quite good throughout the model line, with most trims having a nicely damped, almost carlike ride—only cornering on choppy surfaces, or railroad crossings, will remind you that it's actually a body-on-frame truck. Fit and finish inside is generally top-notch, the interior is pleasantly free of wind and road noise.

Safety equipment on all Yukon models includes dual front, side, and curtain airbags that cover all rows of seats; traction and stability control; OnStar; and tire pressure monitors.

And while the Yukon hasn't yet been tested by the Insurance Institute for Highway Safety, the federal government has given it top five star scores in both frontal and side impact in its new, more stringent test program—with an overall score of four only because it's such a tall vehicle and thus more rollover-prone. In the new NHTSA side pole test, which isn't yet figured into the overall score, the Yukon also gets a top five-star score.

The Yukon's tall stance, though, might be an issue for some shorter drivers as they park or change lanes. However for that there are large side side mirrors, as well as an available blind-spot warning system, parking sensors, and a rearview camera system.

Next up, SLT models get fog lamps, an upgraded Bose audio system, remote starting, tri-zone climate control, power-adjustable pedals, rear parking assist, an in-mirror rearview camera system, and additional power ports.

Denali editions come absolutely loaded with luxury and convenience features, including tri-zone automatic climate control, a power-folding second-row seat, parking sensors, and remote starting. The Denali also gets a standard Bose Centerpoint surround-sound system with ten speakers and XM Satellite Radio, as well as ventilated seats up front and a heated second-row seat. Denali options include the DVD navigation and entertainment systems, a sunroof, and power-retractable assist steps.

The Tahoe Hybrid comes equipped about as well as the Yukon SLT, but a Yukon Hybrid Denali model adds the works—including the Denali's additional acoustical insulation.

It doesn't come cheap, though. Both a loaded Yukon Denali 4WD or a Yukon Hybrid Denali can top the $60k mark.

The exception is the 6.2-liter engine that's optional on the XL and included in the Denali. It returns just 14/18.

But the Yukon lineup redeems itself with the Hybrid model. With an EPA-estimated 20 mpg city, 23 highway, the Yukon Hybrid gets nearly 50 percent more miles out of every gallon, compared to most other full-size SUVs, and it has most of their towing ability (5,000 pounds).

All standard Yukon models are also E85 (85-percent ethanol) compatible; but when you fuel up with ethanol you'll get an EPA-estimated 11 mpg city, 16 highway.