Consumption Vs. Temperature (Graphs)

[GasSavers_BEEF]

if you put the l/100km to negative (cheesy way to invert the numbers) you can see the way they line up.

if you make a second excel spread sheet (I assume you are using excel) you can just copy the first and manually insert a negative in front of all those within that column. you can also use a pivot chart to plot them both on the same graph. you could even put one or the other on a secondary axis.