By Tim FentonThe diesel performance test was done by Volkswagen Group of America’s diesel division in the US.
It was done to check whether diesel engines performed better than gasoline engines.VW had promised that it would give the diesel test results to the EPA, which is supposed to verify the performance of diesel vehicles in the real world.
However, in the past it has not always done so, and it has never tested diesel engines.
A Volkswagen spokesperson said the company did not have to release the diesel tests.
“In fact, it is important to emphasize that the results of the test are for our diesel engine only, and not for the diesel vehicle.
This is a standard Volkswagen procedure,” the spokesperson said.
The spokesperson added that the EPA would issue a final report.
The EPA’s tests of diesel engines have been subject to some controversy.
In the past, they have been criticised for being flawed, with some critics arguing that diesel engines could have been designed differently and made safer.
But now the EPA is investigating whether VW violated environmental laws by using a diesel engine with less than 10 percent of the allowable fuel content.
A spokesman for the EPA did not respond to requests for comment on the diesel performance tests.
Read more:VW diesel engines may not be the best choice for most commutersBut Volkswagen has insisted that it is not using its diesel engines for the same reasons as it has petrol engines.
Volkswagen says its diesel vehicles are designed to operate in a different environment than petrol engines, which have to cope with more pollution and other environmental issues.
“Diesel engines are designed for the environment,” the company said.
“We are working to develop technology to further reduce pollution and improve fuel economy, and are committed to improving fuel economy for our customers and customers around the world.”
The EPA has also said that the diesel cars tested were not necessarily safer than petrol cars, because they were not fitted with electronic stability control, which would have prevented the diesel engine from starting or running up the nose.
The diesel test also showed that the engines did not run hotter than petrol-powered vehicles, which are not allowed to operate under certain conditions.
Volkswagen has said that it has found no significant differences in fuel economy between diesel and petrol.
However there are some questions over the tests.
A diesel engine is used to power a vehicle, but is not meant to operate as an engine.
VW says it is an electrical vehicle, and diesel engines are normally powered by electric motors, and therefore cannot be powered by petrol engines if they are designed this way.VW said that its diesel cars were not designed to run at high speeds, and that it was testing all the possible operating conditions of diesel cars.
“When the test is run, we always test the car with a combination of the air and water temperature, driving conditions and other parameters, to make sure that the car will be able to perform the required driving in a particular setting, according to the manufacturer’s instructions,” the spokesman said.
Volksmwagen has a fleet of over 300 diesel cars, which it says is more than 20 percent of all diesel vehicles on the road.