Is your car unmodified? If so, mileage and age accounting, it seems you have the full beans with a standard engine and the older models have lost some horses along the way...
Impressive if so.. (from a person with no experience of performance drop-off with age)
Cheers
Sime
It's a Feb 2008 car with no modifications. I was pleased at the result as I thought the factory spec was 313PS which is 309BHP