NHTSA launches investigation of Jeep Grand Cherokee fires

After reports that the Jeep Grand Cherokees may be three to four times as likely to catch fire in a rear-impact collision than other midsized SUVs, the National Highway Traffic Safety Administration (NHTSA) has agreed to open an investigation.

Based on NHTSA data, the Center for Auto Safety (CAS) determined that the Grand Cherokee has a higher fatality rate than the Ford Pinto, which became infamous in the 1970s for bursting into flames in rear impacts.

The plastic gas tank in the Grand Cherokee is mounted behind the rear axle and hangs down below the rear bumper, making it vulnerable in accidents.

In 2005, Jeep redesigned the Grand Cherokee and moved the gas tank in front of the rear axle. This design reduced the likelihood of fires in these later Grand Cherokees, according to the CAS petition.

NHTSA investigations often lead to recalls, although they can take years.

Meanwhile, if you own a Grand Cherokee, the Center for Auto Safety says an optional skid-plate over the gas tank (available on Grand Cherokees with the off-road package) will provide some protection. 

 —Eric Evarts