Cost of regular maintaining costs

For this you will need to contact Bentley, As most shops wont have the filters and such for this car (dealer only) Althou sit down when you are speaking to them, their motto is, "if you can afford the car you can afford the service". Just like Porsche, 2005 911 (cant remember the model) pads and rotors and labour $22435!!! They will have all the prices and intervals. Sorry I cant be more help, best of luck thou.

a regular annual service costs between £600 and £1000 depending on requirements

If you can't find a REAL Pro to do it for under $10,000 then you're getting screwed! I had the exact car (willed to me, Lord knows I wouldn't buy a car that sounds like a Go-Kart) and a COMPLETE front and rear brake replacement/repair was under 10 Grand. Amazing how people with no mechanical skills constantly get reamed! The chap, Mark, is right on the mark for the annual. Expect around $1500.00.

Please let me correct my previous answer. I meant a (if you pardon the expression, "Porsche") NOT one of the nicest and classiest motorcars ever, in the Bentley! Can't help you with the Bentley but just had my Mercedes 2004 CL55 AMG done at an amazingly low price or $500.00 per axle. True story!! After jerking me around with "Free" loaner cars and car washes, the total was $1250.00. Very reasonable! However, everything else is very expensive to fix on my Mercedes.