Here's a "Frequently Posted Post" that should be in the WJ FAQ:
"Investigation of 1993-2004 Jeep Grand Cherokee For Fire After Rear End Collision":
The short version - various consumer advocate groups are claiming the ZJ and WJ are "The next Ford Pinto" and are susceptible to fuel tank fires in rear end collisions. Chrysler's research indicates that the incidence of fires in rear end collisions is no higher than any other vehicle and that the vehicle met Federal Safety Standards in place at the time.
The muckrakers are alleging that positioning a plastic fuel tank behind the rear axle is unsafe and that it can crack in an accident and burst into flames. It was also shown that those GCs equipped with the fuel tank skid plate were not affected. The optional "brush guard" (the thin sheet metal version) were not "sufficiently protected".
Here are few of the inflammatory articles claiming the ZJ and WJ are not safe:
And HERE is Chrysler's research as well as a product developed to prevent the issue known as the "Fuel Tank Blocker Bracket". It shows that the Grand Cherokee was safer in accidents than almost all other SUVs.
Here is a picture of the Fuel Tank Blocker Bracket installed on a WJ:
Credit to user "vwbuge" for the picture.
I believe the Fuel Tank Blocker Bracket is merely a "make you feel better" solution and something Chrysler did to alleviate public pressure on the issue. The data supports their original claim that it is safe.
After reading the above research, it is my opinion that Ralph Nader and the various consumer groups reporting that the ZJ/WJ is unsafe are mostly trolling for funding. They are publishing sensational articles to garner attention and future funding. The research shows that the Grand Cherokee is a safe vehicle, safer than most in its class, and that the incidence of fuel tank fires is insignificant.
Please stop posting "Is the WJ safe?" posts? The answer is yes, and I leave you to read the above links and make your own decision.