Hi all I'm still on my first car (mum's old Polo) and will be selling it and upgrading to something a little more exciting. Firstly - I have a few concerns about how taxes work with selling cars as I haven't done before and don't have the slightest clue on how it works. Will I pay any tax on selling it? I've looked through this income tax website (here) but not totally sure that's what I want. Can someone explain the financial side of selling a car privately briefly?

My next question. I'm looking at a new ish Seat Ibiza. Brand new ones have a great looking infotainment system that I quite like the look of, but they're much more expensive than last gen, the infotainment of which I don't particularly like the look of. Is it worth being picky bearing in mind the price differences? Would it be worth looking at a different VW Group car in this class?

Thanks in advance