Ah, but I don't do three times that mileage, despite what I would consider to be a non compact round. I'm just trying to point out that anyone can make up numbers.
Anyways, even taking your maths, you'd be spending £3,591 at 30mpg.
To spend only £2,591 (to save the fictional £1,000 a year to pay for repairs) you'd need to achieve 42mpg. Unlikely. Possible, but very, very unlikely.
Vin