Study suggests every European diesel maker cheated on EU tests

Portable Emissions Measurement Systems (PEMS) on a Peugeot 308

The Volkswagen diesel scandal has thrown a bright spotlight on the way new cars and trucks are tested for compliance with emissions standards. The German carmaker’s use of illegal “defeat device” software showed the limitations of laboratory emissions tests in dramatic fashion. Since news of the scandal broke almost a year ago, other discrepancies… …read more