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XFR - Real world fuel economy

8.7K views 20 replies 13 participants last post by  L80OUS  
TBH, I didn’t buy my R-S to look at the fuel computer. I just drive it. When it needs refuelling I refuel it, quite often it seems :D
 
My front discs were getting witness marks on, so I did an 18 mile journey of booting it and braking to clean them off. It worked. Quick glance at the screen and I achieved 11mpg.