Multiple Looping Problem for Model Input Parameter Study

Hi,

So I am trying to run a code that simulates the performance of a vehicle. It runs with one main loop that counts as one second per loop iteration. I am now trying to perform parameter studies which involves looping the model inputs (e.g Car Mass, Frontal Area etc.) over a normalized range in order to plot which input has the most effect on the output. I am able to do this with one parameter, by looping it over a set range, and plot it against the output (fuel efficiency) but I am confused as to how to do this with all of the parameters in one go.

Thanks for any help. Just can't get my head around it at the moment!