WHAT????? I get that it's a very nice car, and that replacement parts for it (in the event of a prang) will probably be pricey, as would labour in an official RR dealer. But that's horrendous jc. Not being (overly) nosey, but what's your driving history? Have you had a few claims down the years? I had a write off in 2010,but I had NCB protection, and the premium barely moved at renewal time. I'm driving a 2021 Tucson now; ordinary diesel, no electric.
*edit* I see you've already answered the question re your driving history.