How to cheat at emissions tests the #VWGate way – an annotated infographic

As we all know by now, Volkswagen has got itself in to a little hot water (hot CO2?) with the EPA in America, with the revelation that it has been fudging the emissions tests for its diesel vehicles.

How does this happen? Vehicle certification requires new car models to go for a 20-minute simulated drive on a “rolling road” while hooked up to test equipment. The car’s computer then quietly optimises the engine performance to run cleanest during the test.

E&T news has been reporting on the latest VW-gate news, including the likelihood that more car manufacturers are involved in similar practices.

Click on the graphic for an expanded view.

Diesel test cheats
Diesel test cheats



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