Based on the available data for the Mercedes-Benz E-Class Coupe & Cabriolet (2017-20) E220 2DR Coupe 2.0D DPFR SS 194 EU6 AMG Line Premium 9G-T+ Auto, all vehicles are equipped with a 1950 cc engine capacity and utilize diesel as their primary fuel. This indicates a consistent specification across the sample, highlighting the model's focus on diesel powertrain and a 2.0-liter engine size common to this particular variant.