For your budget you are going to be downgrading your car no matter what you do.
For a maximum of 14M you are looking at cars like the Raize, Yaris, etc...which are entry-level vehicles (interior feels cheaper, ride feels compromised and interms of safety features you really are not getting that much more). At the higher end of your budget you can pull off something like a Fronx/Taisor, Nissan Maglite, Nissan Almera or a Honda City. Even these cars would be a bit of a downgrade compared to the Allion you have (feel smaller, ride is not at as compromised as the prior models I mentioned but doesn't feel as nice as an Allion either) and the only noticeable gain would be that "new" feeling and a bit more tech.
Alternatively, you will be looking at used Vezels, etc...that are slightly older than your current car. You cannot even go for something like a new Corolla sedan (petrol variant, which buy itself is an entry level sedan)
I would strongly suggest you keep your Allion for a few more years, especially if it doesn't have any serious mechanical issues. Just give it some TLC, maybe do some modest upgrades (new streo, wheels, good deep clean, etc...) and keep it for a few years until you can actually go for the car you want (Harrier, CR-V, etc...or even something a bit more substantive like at the very least a JDM Yaris Cross or Corolla sedan type vehicle).