VW suggests engine downsizing is done; emissions rules are the reason
Green Car Reports
FEBRUARY 8, 2017
When it comes to improving fuel efficiency, simply making an engine smaller is a fairly direct way to get results. They have downsized engines across model lines, usually adding turbochargers at the same time to match the power output of the larger-displacement engines that they. emissions VW downsizing Fuel Economy TurbochargingIt's the approach that many automakers have taken in recent years.