The data indicates that all surveyed vehicles of the model 'AUDI A5 SPORTBACK (2011-16) 5DR SPORTBACK 1.8 TFSI SS 170 EU5 S LINE 4 SEAT MTRON AUTO8' are equipped with a 1.8-liter petrol engine. Specifically, 100% of the vehicles have an engine capacity of 1798cc, and they uniformly use petrol as their primary fuel type. This consistency suggests that this particular model variant maintains a standard engine configuration and fuel type across the fleet, reflecting its targeted specifications during production.