Dual mass flywheels

Our local garage always fit solid flywheel conversions, none of the customers has ever commented on the clutch feeling any different. I run a Peugeot Partner car and a Citroen Dispatch van, both fitted with the same 2.0 hdi engine. The van has a dmf as standard but the car doesn’t, although for some reason the 1.6 engined version does? :confused:

Pete.