Sporty coupe / everyday car / 15t km per year

Good day, I’ve been looking for a suitable car for a few weeks now, as my golf is passed on to my son and I can/must buy a new car After my first visits to Volkswagen, Audi and Mercedes I particularly like the Cla200 or the Gla200 (even if that’s not a coupe I find it ,,sports , ) with the equipment line Streetstyle . After I got the offers for the Cla and Gla last week (about 37000-39000€ ) I am from re The new Ford Mustang with the 2.3 Ecoboost engine, which with my desired configuration would also cost around 39000€ – i.e. still in the green area, came into my eye. However, since I am relatively unsure if such an exotic thing really comes into question I would have a few questions here: – What does the consumption of the EcoBoost look like or will I be able to test the Us model next week you can do this then m compare it to the final Eu model ? – Since I don’t know anyone who owns a Mustang I would be interested in the maintenance costs etc. still if someone can help me there that would be great . – Maybe this is a stupid question but do you think the conversion from about 100Ps to over 300 is very difficult ? That makes me currently most worried, since my son certainly also wants to drive with it . These were then first my questions, about answers I would very much and if you have any more suggestions for me I am open to them. Lg Ps. Absolute pain limit is 40-41000€.