The first commercial DCD-application in small-displacement passenger cars is a reality as the VW Polo Blue GT hits the market.
2012 Volkswagen Polo Blue GT mixes fun and frugality
Only 4 cylinders, 1.4L in all, but it shuts off the 2 inner cylinders between 1250 and 4000 rpm in conditions where it only has to deliver between 25 and 100 Nm of torque .
That condition occurs for 70% of the NEDC - and in just about all cruising conditions - so fuel consumption is low(ered).
The switchover between 2 and 4 cylinders occurs in 13 to 36 ms, depending on rpm.
It's no lead slug either with 140 HP, and 7.9 s to 62.5mph