These are my calculations. There's a perfectly scientific reasoning to their creation but ultimately how accurate they will be in the final analysis only the manufacturer knows. They've done three 0-400-0km/h runs individually but published full metrics for none unfortunately and frustratingly. Anyway here goes>
I did time the 0-100km/h on the official video prior to this and it's not far from my calculation. Also the 0-300km/h metric was announced as 11.65 seconds for a developmental car not this specific one but we can use it anyway and it was stated that was slightly faster. So that metric is seemingly good too.
So I've done as much as possible. :)