Auto Express have already posted their verdict below:
https://www.autoexpress.co.uk/byd/seal-uWhile the BYD Seal U might not have any important stand-out features, the overall package is inoffensive and the car should come well equipped. It has that all-important interior space that families in particular will desire, and if BYD can continue with its keen pricing, then the Seal U stands a chance of becoming another huge hit for the Chinese brand in this part of the world.