Based on the available data for the Citroen C1 (2009-12) 3DR Hatchback 1.0 68 VTR+ model, all vehicles are equipped with a 998cc petrol engine. This indicates that the entire sample uses the same engine capacity and fuel type, highlighting a uniformity in specifications for this particular model and period. Such consistency suggests that buyers and sellers can reasonably expect this specific engine and fuel configuration in these vehicles.