If you do buy an Audi, don’t get a s-line or one with big wheels.
I have owned a number of them, the best for touring was a A4 3.0 Tdi on standard suspension and 17″ wheels. Almost as smooth as a friends E-class. But they are not big inside.
I now drive a Superb. Hora suggests the Audi is better for the money, However for me the equivalent A4 at the time was £5000 more expensive for the same age and mileage, with the same engine and similar drivetrain ( 2.0 Tdi, 4wheel drive and a manual gearbox)The Audi also depreciates more in real terms if not percentage terms.
However, you have ruled Skoda’s out. Buy an old Merc for the real old mans car, the Honda’s above would get my vote