For about 5 minutes. It was on the edge of its design capability dragging that Bentley around. That's why VW dusted off the venerable 6.75 Rolls Royce V8 and sent that to Cosworth instead.
Funny you mention Bentley. A 90s one went past me the other day and I remembered that Chris Harris auction preview where he commented on how average a size they are compared to modern cars.
XFR's are surprisingly cheap, although they may of course be nails.
On the Golf Club side of things, of course, apart from the estate, of which I think they may have sold 1 globally.
To explain a little why I keep coming back to the 540i - the 1999 Bentley Arnage had the same BMW M62 4.4 litre V8, but turbo-charged by Cosworth.
So, ignoring packaging and cost, it should be possible to have a "factory", Cosworth engineered, twin turbo 540i M Sport Touring.