Based on the available data, all vehicles in the sample of Mercedes-Benz GLA models (2014-17) are manufactured in the year 2014. This indicates a complete concentration of this model in that particular year, with no vehicles from 2015, 2016, or 2017 represented in the data.

The data indicates that all identified vehicles of the Mercedes-Benz GLA (2014-17) GLA200 5DR SUV with the specified model details are equipped with a 2.1-litre diesel engine. Notably, 100% of these vehicles use diesel as their primary fuel type. This suggests a consistent engine and fuel configuration across the sample, reflecting the model's design focus on diesel powertrains during this period.