October 2, 2015 — The Environmental Protection Agency (EPA) said it will begin road-testing emissions on all new vehicles after a cheating scandal involving millions of Volkswagen (VW) diesel cars.
The EPA also plans to test all light vehicles already on the road in the U.S. to check for similar violations, according to USA Today.
The agencies have not ordered VW to issue a recall, but a spokesperson said one is likely: “EPA will require VW to remedy the noncompliance. It is likely that there will be a recall of affected vehicles.”
The Telegraph reports that the “defeat device” software was developed eight years ago by the German engineering firm Bosch. Leaked documents show that in 2007, Bosch warned VW that using the software to cheat on emissions tests would be illegal.
In 2009, VW started installing “defeat devices” to bypass tough anti-pollution laws that capped the legal limit of nitrogen oxide (NOx) emissions. Four years later, researchers at West Virginia University found discrepancies in the amount of NOx emitted by the cars during testing and on the road.
The EPA opened an investigation in May 2014. The dialogue continued until September 2015, when VW admitted using the software to sense deceive regulators about emissions. Up to 11 million cars worldwide, including nearly 500,000 in the United States, are affected by the scandal.