The data indicates that virtually all Vauxhall Insignia 1.8 16V 140 EU5 SRI NAV models produced between 2013 and 2018 are equipped with a 1.796-liter petrol engine, accounting for 100% of the sample. Additionally, nearly all vehicles (99.5%) run on petrol, with a small fraction (0.5%) being gas bi-fuel models. This suggests that the engine capacity and fuel type are highly consistent across this vehicle model, reflecting standard specifications for this particular version.