SAO PAULO (AP) -- The cars roll endlessly off the local assembly lines of the industry's biggest automakers, more than 10,000 a day, into the eager hands of Brazil's new middle class. The shiny new Fords, Fiats, and Chevrolets tell the tale of an economy in full bloom that now boasts the fourth largest auto market in the world.
What happens once those vehicles hit the streets, however, is shaping up as a national tragedy, experts say, with thousands of Brazilians dying every year in auto accidents that in many cases shouldn't have proven fatal.
The culprits are the cars themselves, produced with weaker welds, scant safety features and inferior materials compared to similar models manufactured for U.S. and European consumers, say experts and engineers inside the industry. Four of Brazil's five bestselling cars failed their independent crash tests.
Unsafe cars, coupled with the South American nation's often dangerous driving conditions, have resulted in a Brazilian death rate from passenger car accidents that is nearly four times that of the United States, according to an Associated Press analysis of Brazilian Health Ministry data on deaths compared to the size of each country's car fleet. In fact, the two countries are moving in opposite directions on survival rates -- the U.S. recorded 40 percent fewer fatalities from car wrecks in 2010 compared with a decade before. In Brazil, the number killed rose 72 percent, according to the latest available data.
Dr. Dirceu Alves, of Abramet, a Brazilian association of doctors that specializes in treating traffic accident victims, said poorly built cars take an unnecessary toll.
"The gravity of the injuries arriving at the hospitals is just ugly," he said, "injuries that should not be occurring."
Automakers in Brazil point out that their cars meet the nation's safety laws. Some said they build even tougher cars for the country because of its poorly maintained roadways and rejected any notion that cost-cutting in production leads to fatalities.
But the country's few safety activists perceive a deadly double standard, with automakers earning more money from selling cars that offer drivers fewer safeguards -- a worrisome gap for new middle-class households, whose surging spending power has outpaced consumer protections taken for granted in more developed countries. The problem extends beyond Brazil, with economic forecasts showing the majority of global growth in auto sales taking place in emerging-market nations as the world's auto fleet doubles to 1.5 billion by 2020.
"Entry-level cars in Brazil are incredibly dangerous, it can't be denied. The death rate from accidents is far too high," said Maria Ines Dolci, coordinator of the Rio de Janeiro-based consumer defense group Proteste. "The manufacturers do this because the cars are a little cheaper to make and the demands of the Brazilian consumers are less; their knowledge of safety issues is lower than in Europe or the U.S."
Manufacturers earn a 10 percent profit on Brazilian-made cars, compared with 3 percent in the U.S. and a global average of 5 percent, according to IHS Automotive, an industry consulting firm.
Only next year will laws require frontal air bags and antilock braking systems on all cars, safety features that have been standard in industrial countries for years. The country will also have new impact regulations on paper, at least; Brazilian regulators don't have their own crash-test facility to verify automakers' claims about vehicle performance, nor are there independent labs in the country.
Experts say those requirements alone are not sufficient to meet basic safety standards. Some models sold in Brazil, like the Chinese-made JAC J3, scored only one star in a recent crash test despite having air bags and antilock brakes.
An independent pilot effort known as the Latin New Car Assessment Program has run initial tests of Brazil's most popular car models, and the results are bleak.
The cheapest models of four of the five top-selling cars, made by General Motors, Volkswagen and Fiat, received a one-star rating, out of five stars, while other top sellers also scored poorly. Such a rating means cars provide little protection in serious head-on wrecks, compared to four- or five-star rated cars, which are virtually the minimum that consumers in the U.S. and Europe buy.
"The difference is you're talking about somebody dead in the vehicle or dying very quickly, or somebody being able to get out of the vehicle themselves," said David Ward, director general of the London-based FIA Foundation for auto safety, which supports the Euro and Latin NCAP programs. "It's definitely a difference between life and death."