The data indicates that all vehicles of the specified model, the Mercedes-Benz C-Class (2011-15) C200 4DR Saloon, are equipped with a 2.1-litre diesel engine, specifically 2143 cc, which accounts for 100% of the sample. Additionally, every vehicle in this sample uses diesel as its primary fuel, suggesting a consistent engine and fuel type across the fleet. This uniformity may reflect the standard engine options and fuel choices offered for this model range during that period.