New rollover data
08-09-2004, 11:51 AM
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Three Wheelin'
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New rollover data
NHTSA released new rollover data today, Good news for the Pilot!
http://money.cnn.com/2004/08/06/pf/a...ex.htm?cnn=yes
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NEW YORK (CNN/Money) - The 4-wheel drive Chrysler Pacifica received the top ranking among sport/utility vehicles in the National Highway Traffic Safety Administration's new, more detailed, roll-over ratings, released today.
2004 Chrysler Pacifica
The Nissan Quest is the most stable minivan, according to NHTSA's new ratings and the 2-wheel drive Chevrolet Silverado extended cab is the most stable pick-up.
The 4-wheel drive Pacifica has a 13 percent chance of rolling over in a single-vehicle crash, according to NHTSA. Some auto shopping Websites classify the Pacifica as a station wagon, rather than an SUV, since it is not designed to perform well in rough, off-road terrain. NHTSA, however, classifies it as an SUV.
The 2-wheel drive Ford Explorer SportTrac was the lowest-rated SUV, with a 35 percent chance of rolling over in a single-vehicle crash. Ford has previously contended that NHTSA's low stability rating for the SportTrac does not reflect the vehicle's real-world performance.
Other top-rated SUVs are the Nissan Murano and the Honda Pilot. Among the lowest-rated, or least stable, SUVs are the Mercury Mountaineer, GMC Yukon and 2-wheel drive Ford Explorer.
Previously, NHTSA had used a five-star rating system to measure an SUV's tendency to roll over in a crash. The system covered all types of vehicles, not just SUVs, and SUVs overwhelmingly tended to have three-star ratings. Of the 28 SUV that had been rated before today, 20 had three star ratings and just one, the 2-wheel SportTrac, had a two-star rating. Seven had four star ratings.
SUVs overwhelmingly tended to have three-star ratings. Of the 28 SUVs that had been rated before today, 20 had three-star ratings and just one, the 2-wheel drive Ford Explorer SportTrac, had a two-star rating. Seven had four-star ratings.
Top-rated for rollover
These vehicles are least likely to roll over, according to NHTSA
SUV Stars Chance of rollover*
Chrysler Pacifica 4WD 4 13.0
Chrysler Pacifica 2WD 4 14.0
Nissan Murano 4WD 4 15.1
Honda Pilot 4WD 4 15.9
* Chance of rollover in single-vehicle crash.
Source: National Highway Transporation Safety Admininstration
A four-star rating means that an SUV has a 10 to 20 percent chance of rolling over in a single-vehicle crash. Three- and two-star ratings correlate to 20-to-30 and 30-to-40 percent odds of a rollover, respectively.
Far too vague?
The star-rating system had been criticized by auto safety advocates as being far too vague.
Worst-rated for rollover
These SUVs are most likely to roll over in a single-vehicle crash, according to NHTSA.
SUV Stars Chance of rollover
Ford Explorer SportTrac 2WD 2 34.8
Mercury Mountaineer 4-door 2WD 3 28.3
GMC Yukon 2WD 3 28.3
Ford Explorer 4-door 2WD 3 28.3
Chevrolet Tahoe 2WD 3 28.3
* Percent chance of rollover in a single-vehicle crash
Source: National Highway Traffic Safety Administration
To make it easier to distinguish among SUVs, NHTSA will now rank vehicles of the same type. That way, consumers will be able to see which SUVs -- even those that currently have the same star ratings -- are less likely to roll over than others.
"That's a step in the right direction," said R. David Pittle, senior vice president for technical policy for Consumers Union, the organization that publishes the magazine Consumer Reports. Pittle has previously called for changes to the way NHTSA reports the results of SUV stability tests. He was interviewed prior to the public release of the new ratings system.
The ratings are based, primarily, on a figure called the Static Stability Factor, which is calculated from a vehicle's width and the height of the center of its mass. The higher the Static Stability Factor, the less likely a vehicle is to tip over.
Vehicles with lower Static Stability Factors, including all SUVs, are also put through a driving test called the Dynamic Stability test, which consists of a series of abrupt turns at increasing speeds.
Vehicles that can complete the maneuver while keeping at least three wheels on the ground at speeds up to 50 miles per hour are given a passing grade. Those that fail could have their star rating reduced by one star.
Most SUVs have passed NHTSA's Dynamic Stability Test. Pittle and other safety advocates have said that the dynamic test should play a larger role in the ratings and details of the test results, such as the speed at which the vehicle tipped, should be publicly released.
http://money.cnn.com/2004/08/06/pf/a...ex.htm?cnn=yes
----------------------------------
NEW YORK (CNN/Money) - The 4-wheel drive Chrysler Pacifica received the top ranking among sport/utility vehicles in the National Highway Traffic Safety Administration's new, more detailed, roll-over ratings, released today.
2004 Chrysler Pacifica
The Nissan Quest is the most stable minivan, according to NHTSA's new ratings and the 2-wheel drive Chevrolet Silverado extended cab is the most stable pick-up.
The 4-wheel drive Pacifica has a 13 percent chance of rolling over in a single-vehicle crash, according to NHTSA. Some auto shopping Websites classify the Pacifica as a station wagon, rather than an SUV, since it is not designed to perform well in rough, off-road terrain. NHTSA, however, classifies it as an SUV.
The 2-wheel drive Ford Explorer SportTrac was the lowest-rated SUV, with a 35 percent chance of rolling over in a single-vehicle crash. Ford has previously contended that NHTSA's low stability rating for the SportTrac does not reflect the vehicle's real-world performance.
Other top-rated SUVs are the Nissan Murano and the Honda Pilot. Among the lowest-rated, or least stable, SUVs are the Mercury Mountaineer, GMC Yukon and 2-wheel drive Ford Explorer.
Previously, NHTSA had used a five-star rating system to measure an SUV's tendency to roll over in a crash. The system covered all types of vehicles, not just SUVs, and SUVs overwhelmingly tended to have three-star ratings. Of the 28 SUV that had been rated before today, 20 had three star ratings and just one, the 2-wheel SportTrac, had a two-star rating. Seven had four star ratings.
SUVs overwhelmingly tended to have three-star ratings. Of the 28 SUVs that had been rated before today, 20 had three-star ratings and just one, the 2-wheel drive Ford Explorer SportTrac, had a two-star rating. Seven had four-star ratings.
Top-rated for rollover
These vehicles are least likely to roll over, according to NHTSA
SUV Stars Chance of rollover*
Chrysler Pacifica 4WD 4 13.0
Chrysler Pacifica 2WD 4 14.0
Nissan Murano 4WD 4 15.1
Honda Pilot 4WD 4 15.9
* Chance of rollover in single-vehicle crash.
Source: National Highway Transporation Safety Admininstration
A four-star rating means that an SUV has a 10 to 20 percent chance of rolling over in a single-vehicle crash. Three- and two-star ratings correlate to 20-to-30 and 30-to-40 percent odds of a rollover, respectively.
Far too vague?
The star-rating system had been criticized by auto safety advocates as being far too vague.
Worst-rated for rollover
These SUVs are most likely to roll over in a single-vehicle crash, according to NHTSA.
SUV Stars Chance of rollover
Ford Explorer SportTrac 2WD 2 34.8
Mercury Mountaineer 4-door 2WD 3 28.3
GMC Yukon 2WD 3 28.3
Ford Explorer 4-door 2WD 3 28.3
Chevrolet Tahoe 2WD 3 28.3
* Percent chance of rollover in a single-vehicle crash
Source: National Highway Traffic Safety Administration
To make it easier to distinguish among SUVs, NHTSA will now rank vehicles of the same type. That way, consumers will be able to see which SUVs -- even those that currently have the same star ratings -- are less likely to roll over than others.
"That's a step in the right direction," said R. David Pittle, senior vice president for technical policy for Consumers Union, the organization that publishes the magazine Consumer Reports. Pittle has previously called for changes to the way NHTSA reports the results of SUV stability tests. He was interviewed prior to the public release of the new ratings system.
The ratings are based, primarily, on a figure called the Static Stability Factor, which is calculated from a vehicle's width and the height of the center of its mass. The higher the Static Stability Factor, the less likely a vehicle is to tip over.
Vehicles with lower Static Stability Factors, including all SUVs, are also put through a driving test called the Dynamic Stability test, which consists of a series of abrupt turns at increasing speeds.
Vehicles that can complete the maneuver while keeping at least three wheels on the ground at speeds up to 50 miles per hour are given a passing grade. Those that fail could have their star rating reduced by one star.
Most SUVs have passed NHTSA's Dynamic Stability Test. Pittle and other safety advocates have said that the dynamic test should play a larger role in the ratings and details of the test results, such as the speed at which the vehicle tipped, should be publicly released.
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