What Fuel ? :-))

[sven]

I could only buy 91 Ron in the USA and the hire RT ran like a bag of sh*te, especially at altitude. It returned 59mpg though compared to 47.8mpg on mine, which shows how straight roads and cruise control can improve fuel consumption. Prefer thrashing the tits off mine on twisty roads though

 

[Schtum]

I could only buy 91 Ron in the USA and the hire RT ran like a bag of sh*te, especially at altitude.

US fuel ratings are different. I suspect you were buying 91 AKI = 95 RON.