My cooper has recently gone through the 1250 miles run in period.
I as achieving a respectable 380 ish miles to the tank. This is around 35-37 mpg.
After going through the 1250 mile mark and fitting my whalen shift knob
I am now only getting around 300 miles to the tank full or about 27 MPG.
What a difference eh? she does get a bit thirsty when you push her.
Still she begs to be driven "sportily", I can't help myself.
Just thought I would share my stats, is this about normal?