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I thought most of the engines that were cheating were the non Urea engines. Most other companies thought it would be impossible to build a diesel engine that me

by vondur 9y ago

I thought most of the engines that were cheating were the non Urea engines. Most other companies thought it would be impossible to build a diesel engine that meets the pollution restrictions without including the DEF based anti pollution system.

vonmoltke 9y ago
Most, but not all as the other poster is claiming. The proportion of DEF-affected vehicles is much higher in North America as well.