Despite a federal investigation into possible fire risks in the Chevy Volt gas-electric hybird, the Insurance Institute for Highway Safety (IIHS) says it has no plans to strip the Volt of its five-star safety rating.
IIHS tested the Volt last February and gave it a top rating. Last month, it said passengers in hybrids had less risk of injury in a crash because of the added mass provided by the heavy battery.
The safety group also said it found no evidence of damage to the Volt's battery packs in its tests.
"If we had found that the battery pack had been damaged or certainly if we had subsequent concerns about fire risk -- that would have raised red flags," IIHS spokesman Russ Rader said, according to a Reuters report.
The National Highway Traffic Safety Administration (NHTSA) opened a formal safety defect investigation of the Volt last month. That could result in recalls and design changes in future models.
In May, a Volt that had been subjected to crash tests at a NHTSA test site burst into flames three weeks later while it was stored in a garage. Just a few days ago, a battery that had been damaged in another test two weeks earlier burst into flames.
NHTSA says it knows of no highway accidents that caused Volts to catch fire.
Gas fires
All cars, especially those powered by gasoline, pose a fire risk. Ford has fought a lengthy battle over charges that its Crown Victoria model, widely used in police and taxi fleets, is prone to explode into flames when rear-ended. Millions of Ford F-150 and other model trucks were recalled because of the risk that they could burst into flames when parked and unattended.
GM has offered free loaner cars to Volt owners worried about the vehicle's safety. GM said that as of last Thursday, 33 of about 5,000 Volt owners have taken the loaners.
In a letter to owners and dealers, North American GM President Mark Reuss tried to reassure them by noting: "I am also a Volt owner, my daughter drives it every day and she will continue to do so."
Most Volt owners are apparently pleased with the cars. Last week, the Volt came up tops in customer satisfaction in a Consumer Reports survey.