I have a few datasets for various SGs!
2007 FXT (vf34, stock injectors, pro-tuned, highway, n=49) @ 10.7 L/100km
2006 FXT (TD04, stock, highway, n=51) @ 11.0 L/100km
2005 FXT (TD04, stock, city/highway, but only n=5 in winter) @ 14.8 L/100km
2008 FXT (EFR6758, ID1000, water meth, 6MT, etc, city, n=46) @ 13.5 L/100km
I took out outliers (i.e. when they were on the dyno = much worse!)
The lines are moving averages. You can really tell where I stopped doing the Strathmore commute!