Decision in principle

Hello dear Jaguar Community, I would like to personally assess your assessment of the following facts. But first of all ZDF . Inventory: Audi A4 B8_2009 2.7TDI with 310,000 KM on the clock. annual mileage: approx. 35.-40,000 (80% highway 10% Country 10% City) Budget: 12,000 euros I have the great “luck?” that my brother works at Jaguar and now has an internal advantage purchase on a saloon_Jaguar XF from 2010 3.0 – 241 hp diesel with 110,000 KM. The car costs me 8_fold over now my question, would you give up the Audi against the Jaguar? I personally really like my Audi and wanted to crack the 400,000 mark with him and actually get a little lower from the consumption costs ^^ now I think I might just do something crazy, because the extra price in the maintenance against Audi vs Jaguar is marginal. How would you decide?