I can't find a Green NCAP test for a Superb, did you mean Octavia?

Similarly, the only Green NCAP test that I can find is of the plug-in Prius rather than the more normal version of the hybrid (which likely will have a lower score) & whilst the Skoda is better in the Clean Air Index section of the tests it is worse in the Greenhouse Gases section..

www.greenncap.com

Certainly, the latest diesels can have very effective emissions control systems but it would be interesting to see how both diesel & hybrid fare 10 years down the line & how much they may have cost in maintenance in the interim.

The government plans for both to go away anyway ...

I don't subscribe to Which so I can't access Which's own tests/reports but I take it that you mean www.which.co.uk/news/2021/07/popular-full-hybrids-.../ which appears to largely be Which commenting on the GreenNCAP tests & then plugging their own?

You can access the full GreenNCAP tests at the link I posted above. Extracting the Which report details, even were I able to access them, & posting I believe would technically be illegal which I suspect HJ's owners would not approve of.

I do wonder how the diesels complicated emissions systems will be faring 10 years down the line...