The data indicates that all Mercedes-Benz CLA Coupe (2016-19) CLA220 models with the specified description are equipped with a 2.1-liter diesel engine and exclusively use diesel fuel. This uniformity suggests a consistent engine specification and fuel type across this vehicle subset. Notably, the engine capacity of 2.1 liters appears to be the standard for this model, and there are no variations in fuel type, reflecting a focused engine and fuel configuration for this car variant.