The data indicates that all available vehicles of the Mercedes-Benz CLA Coupe (2019-24) in this sample are equipped with a 1.3-liter petrol engine. This engine capacity accounts for 100% of the vehicles, with no variation observed. Additionally, all vehicles use petrol as their primary fuel type. This suggests a consistent engine size and fuel type across this model and specification, reflecting a standardized configuration likely aimed at efficiency and compliance with Euro 6 emissions standards.