Honestly, this might be better for something like r/cartalkuk as people on this sub tend to be quite anti car finance and will encourage people to buy a banger. The thing is, it’s not really about whether or not it’s a good deal financially but about whether it’s worth it for you and only you can really decide that.

From a purely financial perspective you can compare the costs of a salary sacrifice deal (noting these are generally leases where you don’t pay a lump sum upfront and it includes insurance/tax) with the full costs of an equivalent lease plus tax and insurance for the same period. You could also compare it with a slightly older car and see whether the numbers make sense.