NEW YORK — Federal safety regulators received more than 260 complaints over the past 11 years about General Motors vehicles that suddenly turned off while being driven, but they declined to investigate the problem, which GM now says is linked to 13 deaths and requires the recall of more than 1.6 million cars worldwide.
A New York Times analysis of consumer complaints submitted to the National Highway Traffic Safety Administration found that since February 2003 it received an average of two complaints a month about potentially dangerous shutdowns, but it repeatedly responded that there was not enough evidence of a problem to warrant a safety investigation.
The complaints — the most recent of which was filed Thursday — involved six GM models that the automaker is now recalling because of defective ignition switches that can shut off engines and power systems and disable air bags. GM said the first recall notices were mailed Friday to vehicle owners.
Many of the complaints detailed frightening scenes in which moving cars suddenly stalled at high speeds, on highways, in traffic, and while crossing railroad tracks. A number of the complaints warned of catastrophic consequences if something was not done.
“When the vehicle shuts down, it gives no warning, it just does it,” wrote one driver of a 2005 Chevrolet Cobalt. “I drive my car to and from work praying that it won’t shut down on me while on the freeway.”
Another driver wrote of the same model: “Engine stops while driving — cannot steer nor brake so controlling the car to a safe stop is very dangerous.”
To the mounting complaints, the safety agency sometimes responded with polite but formulaic letters similar to one it sent in December 2010 to Barney Frank, then a congressman from Massachusetts, who had written on behalf of a distraught constituent whose 2006 Cobalt kept stalling.
In the letter to Frank, the agency said it had reviewed its database of complaints to determine if a “safety defect trend” existed. “At this time, there is insufficient evidence to warrant opening a safety defect investigation,” the letter concluded.
Failure to recognize a pattern in complaints has been a problem for the safety agency before. In the late 1990s, it was criticized for failing to detect a wave of highway rollovers in Ford Explorers with Firestone tires, a problem that was eventually linked to 271 deaths.
In response, Congress passed a law in 2000 requiring automakers to report to the safety agency any claims they received blaming defects for serious injuries or deaths, so the government would not have to rely only on consumer reports.
Since 2003, GM has reported at least 78 deaths and 1,581 injuries involving the now-recalled cars, according to a review of agency records. Though the records mention potentially defective components, how many of these records were related to the ignition problem is unclear. Even with that additional information, regulators appear to have overlooked complaints of shutdowns.
“We need to make it clear to both industry members and regulators that adverse events must be immediately reported and analyzed to ensure public safety,” said Representative Diana DeGette of Colorado, a Democrat on the House Energy and Commerce Committee. The panel’s staff is set to meet with the safety agency Monday.
The safety agency has repeatedly suggested that it failed to act over the years because of a lack of a critical mass of evidence that suggested a problem beyond isolated incidents.
In a statement e-mailed to The New York Times, a spokesman noted that over the past seven years, the agency’s investigations in other cases have resulted in 929 recalls of more than 55 million vehicles.
The agency “uses a number of tools and techniques to gather and analyze data and look for trends that warrant a vehicle safety investigation and possibly a recall,” the statement said. The agency said 260 complaints are about 0.018 percent of the vehicles under recall.
The recall has thrown GM into turmoil just as it was emerging from the shadow of bankruptcy under new chief executive Mary T. Barra, and as the agency stepped up pressure on GM in late February by launching an investigation into the “timeliness” of GM’s “defect determination.” Last week the agency sent the company 107 questions, demanding it explain why it had waited so long to recall the vehicles.
But the Times review of thousands of complaints stored in the agency’s public database raises questions about the agency’s own timeliness. The newspaper analyzed nearly 8,000 complaints about the recalled models to find instances when drivers may have been affected by faulty ignition.
The 260-plus total includes only complaints that mentioned a moving car stalling unexpectedly. It does not include the complaints filed about basic ignition problems on these models, like trouble starting or stopping a car’s engine, or failures of the power steering mechanism, even though these could have stemmed from an inadvertent ignition shutdown. People may have filed multiple complaints about the same car.
Greg Martin, a GM spokesman, said the company monitors complaints to the NHTSA about its vehicles but declined to say how the agency responded to ignition switch complaints.
By the time the agency wrote to Frank in 2010, it had received more than 170 complaints about unexpected stopping or stalling of the recalled GM models, and 35 specifically for the 2006 Cobalt. The Cobalt has been a particularly problematic model for GM.
The recall covers six models: 2005-07 Cobalts; the 2007 Pontiac G5; 2003-07 Saturn Ions; 2006-07 Chevrolet HHRs; 2006-07 Pontiac Solstices and the 2007 Saturn Sky. Both the agency and GM are warning motorists that if they must drive a recalled vehicle, no keys other than the car key should be on the key chain to eliminate jostling that could shut down the ignition.
In announcing the recalls, GM said the ignition defect may have been responsible for 31 accidents and 13 deaths, but it has declined to disclose the names of those who died or details of the crashes. GM said it had been “involved in claims and lawsuits” related to the ignition problem, but did not disclose how many settlements had been reached.