Sounds about right, as with all the MEB platform cars the range display is usually referred to as a GOM, Guess O-Meter 🙂
It does alter depending on your driving, time of year, which way the wind is blowing etc. When I collected my Enyaq in Jan it had 325 miles showing, 4-5 weeks later in the real world and cold temperatures it was struggling to get over 220 on a full charge!.
Charged it to 100% Sunday night, range said 305 miles (best it’s done since I got it), drove 5 miles to Durham Monday night and it said 285 miles and 85% ???. Whereas I did about 25 miles today (including the same trip as Monday) and it’s only droped 18 miles! 🙂
Please excuse spelling/typos. Apart from being a clot it turns out I had one on my cerebellum that's now causing various problems!