"The occupant death rate in SUVs is 6 percent higher than it is for cars – 8 percent higher in the largest SUVs. The main reason is that SUVs carry a high risk of rollover; 62 percent of SUV deaths in 2000 occurred in rollover accidents. SUVs don't handle well, so drivers can't respond quickly when the car hits a stretch of uneven pavement or "trips" by scraping a guardrail. Even a small bump in the road is enough to flip an SUV traveling at high speed. On top of that, SUV roofs are not reinforced to protect the occupants against rollover; nor does the government require them to be.
Because of their vehicles' size and four-wheel drive, SUV drivers tend to overestimate their own security, which prompts many to drive like maniacs, particularly in inclement weather. And SUV drivers – ever image-conscious and overconfident – seem to hate seat belts as much as they love talking on their cell phones while driving. Bradsher reports that four-fifths of those killed in roll-overs were not belted in, even though 75 percent of the general driving population now buckles up regularly.
While failing to protect their occupants, SUVs have also made the roads more dangerous for others. The "kill rate," as Bradsher calls it, for SUVs is simply jaw-dropping. For every one life saved by driving an SUV, five others will be taken. Government researchers have found that a behemoth like the four-ton Chevy Tahoe kills 122 people for every 1 million models on the road; by comparison, the Honda Accord only kills 21. Injuries in SUV-related accidents are likewise more severe.
Part of the reason for the high kill rate is that cars offer very little protection against an SUV hitting them from the side – not because of the weight, but because of the design. When a car is hit from the side by another car, the victim is 6.6 times as likely to die as the aggressor. But if the aggressor is an SUV, the car driver's relative chance of dying rises to 30 to 1, because the hood of an SUV is so high off the ground. Rather than hitting the reinforced doors of a car with its bumper, an SUV will slam into more vulnerable areas and strike a car driver in the head or chest, where injuries are more life-threatening."
http://www.alternet.org/story.html?StoryID=14839