£10-50 ish from the light being on. I rarely do any kind of distance riding. I've also altered the gearing a little this year (2 teeth up on rear sprocket) and that has had the affect of riding at a higher revs (by about 500 rpm or so). The consumption may have dropped a little when I did that but not by much really (not below 100). Mostly done track days since then so not sure - above was all based on standard gearing.
Threaded Mode