European commission warned of car emissions test cheating, five years before VW scandal

Documents seen by Guardian show that the commission's in-house science service told it in 2010 that tests had uncovered what researchers suspected to be a 'defeat device'

The European commission was warned by its own experts that a car maker was suspected of cheating emissions tests five years before the VW emissions scandal.

A documents cache seen by the Guardian show that the commission's in-house science service told it in 2010 that tests had uncovered what researchers suspected to be a "defeat device" that could cheat emissions tests.