filled My K engined S1 Exige to the top with Tesco super unleaded and did 170 miles before the refill came up last time. I’m guessing that the fuel display is the same on all, mine goes down to 11 litres then over to refill leaving me 10 litres reserve!? On 36 litres in the tank plus 1ish up the pipe it puts my fuel consuption at about 28.5 or 29 mpg driving normally. That was a sunny afternoon fill up though so an early morning fill up should see a return nearer to 30 mpg.
my ~S1 K is refilled @ 150 miles +/- as fuel gauge is crap…Now -a- days petrol stations are so far apart I also carry spare gallon just in case.
(buy at your local INDEPENDANT to stop supermarkets killing them all)
12 mpg on track…I agree but dont tell 'er indoors as she thinks its super economical!!!