The diesel engine was invented in 1893 by Rudolf ... It depends on what you mean by fail. Economically, biodiesel is doing just fine, even if growth is slower than expected. Production and ...

Similarly, 20 percent of petrol vehicles (both private and government cars)—14 out of 71—failed the emission test. “A huge number of diesel vehicles tested recently have been found emitting black ...

With German cities on the verge of banning older diesel vehicles from central areas at the beginning of the year, many drivers are getting particulate filters installed on their cars. The German ...