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2011 Grand Cherokee A Top Safety Pick; Crosstour 'Disappointing'

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2011 Jeep Grand Cherokee

2011 Jeep Grand Cherokee

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2011 Kia Sorento

2011 Kia Sorento

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Depending on which utility vehicle you choose, you might be getting vastly different degrees of roof protection in the event of a rollover.

That's the surprising result of that a new round of tests from the Insurance Institute for Highway Safety (IIHS) serves to highlight.

First, the good news: In a new round of roof-strength tests for mid-size utility vehicles, the 2010 Chevrolet Equinox and closely related 2010 GMC Terrain; the 2010 Jeep Liberty and closely related Dodge Nitro; the 2010 Toyota Highlander; and the 2010 Toyota Venza all earned top 'good' ratings. So did the 2010 Jeep Grand Cherokee and 2011 Kia Sorento.

The new test, which has been phased in this model year, measures protection in the event of a rollover by seeing how far the roof will deform inward when subjected to a constant pressure. To achieve the Institute's top 'good' rating, a roof must withstand the concentrated force of four times the vehicle's weight before a specific metal contact plate deforms the roof five inches inward.

The Toyota Highlander, Jeep Liberty, Toyota Venza, and 2011 Jeep Grand Cherokee all did extremely well, withstanding nearly five times their respective weights.

Among this latest batch, the Chevy Equinox, Jeep Grand Cherokee, Toyota Highlander, Toyota Venza, and Kia Sorento all earned the Top Safety Pick designation, which requires top good scores in front, side, and rear tests along with the new rollover test.

The risk of serious or fatal injury in a rollover is about 50 percent lower for those with a 'good' roof strength rating than those without, according to the IIHS.

Five utility vehicles—the 2010 Honda Accord Crosstour, Honda Pilot, Mazda CX-7, Mitsubishi Endeavor, and Nissan Murano—earned only a 'marginal' score.

In the case of the Crosstour, a model that's all new for 2010, it's a more noteworthy disappointment.

"First results show that automakers are making progress in rollover protection, but it's disappointing that a new design like the Crosstour didn't perform better," said IIHS president Adrian Lund in an official release. Although many classify the Crosstour as a car, as most of its componentry is shared with the Accord Sedan, the IIHS classifies it as an SUV.

2010 Honda Accord Crosstour EX-L

2010 Honda Accord Crosstour EX-L

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It was only able to withstand about 2.8 times its weight in the test. The Honda Pilot and Mitsubishi Endeavor only withstood about three times their respective weights. The current federal standard is just 1.5, but last April the federal government proposed to phase in a new standard—of effectively three times the vehicle's weight—by 2016.

The Honda Accord Sedan, earlier this year, had earned a slightly better score of 'acceptable.' Prior to the new test, the Accord had been a Top Safety Pick.

 
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