Purchase advice Leon 1.8 or 1.4

Moin, I would like to buy the Leon “Xcellence” (5-door) with – 1.8 TSI DSG without dynamic package or – 1.4 TSI DSG with dynamic package. Price-wise, the 1.8 DSG without dynamic package and the 1.4 DSG with dynamic package do not take much and are both in my budget. I need the DSG because of my disability in the left leg, because I cannot use the clutch reasonably. Since I drive 80% in a big city, the question is whether the 1.8 is not too much fuel compared to the 1.4 Is it possible to use about 8 litres for the 1.8 DSG? It is also important for me to maintain the durability of the engine (and in the case of 1.4, that of the DCC) because I want to keep the vehicle for more than 5 years – rather 8+ years. Therefore, the question arises: 1.4 with DCC (Dynamic package) or 1.8 without DCC? Thank you for your answers in advance LG Cossor