Forget diesel, hybrid etc.. CSL returns 39mpg

[mattCSLnut]

When I drive in Germany (200 to 280) I get 12.5lt/100km.

That's more like it :supz: ... the equivalent of 23 MPG (UK) ... and near enough what I've been getting on my numerous Autobahn excursions :-D
Doing low 8 min. Ring laps will see low teens (MPG) I've experienced 11 mpg average a few times :bigcry: after a full day of lappage.

[J2LTB]

That's mathematically impossible :smt017 ... and there's something wrong with your Cecil's OBC mate

I'll check the OBC when it's running again. I don't think it's too far wrong though. Reset the counter at the start of the trip. It is mathematically possible. Off throttle the mpg can be very good. Perhaps your right foot is heavier than mine :whistle: