The data indicates that the majority of the Audi A4 models in this sample were manufactured in 2010, accounting for 55%. Vehicles from 2009 make up 35%, while only a small portion, 10%, are from 2011. This suggests that the most common year of manufacture for this model is 2010, possibly reflecting a production peak or higher popularity for that model year during the period.

Based on the available data for the AUDI A4 (2008-12) 4DR Saloon 1.8 TFSI 160 Executive S Line Mtron Auto, all vehicles are equipped with an engine capacity of 1,798 cc and are petrol-powered. This indicates a consistent engine size and fuel type across the sample, highlighting the model's standard configuration for this particular variant.