There are other features added in the Dynamic variant like alloy wheels, Auto AC, USB/AUX, leather wrapped steering, Steering mounted audio controls which are useful for one reason or the other. However, easily skippable based on your requirements. Leaving all the above features aside, Dynamic variant has Airbags which the Active variant doesn't have. This is highly recommended, so I wouldn't suggest the Dynamic variant out of these two for Airbags. Strangely, fiat india web site doesn't mention airbags in the specifications list for any of the Linea variants. Do check this with the dealer or in the product manual.