Your Audi A4 is over 10 years old, and as good as it may be to drive, it will not fetch great resale value. On the flipside, no car in the Rs 10-12 lakh budget will give the power and feel of a well maintained luxury car. If you don’t mind the potential degradation in resale value, you could keep your A4 for longer.
If you are more inclined to a new car purchase in the near future, you could consider the Skoda Kylaq AT. It's got a punchy engine and smooth gearbox, handles well and also delivers with a tough build. It feels like a European car and something we think you would value.