Some parts of the emissions control systems (I was informed by competent technicians, but not yet adequately "educated") work through burning extra gasoline and

Some parts of the emissions control systems (I was informed by competent technicians, but not yet adequately "educated") work through burning extra gasoline and fuel - they are active, they use energy. The extra intake may seem pretty dramatic - though of course full data for comparison should be in order... It should be possible to compare euro-4 vs euro-5 model consumption through spritmonitor.de (through selecting by year) - I have no time right now but may do it later, and possibly report.