When I compare my vehicle with others, it would be good to know what percentage of the average mpg is done when driving in the city or on the highway.
When I look at other vehicles like mine, it seems they are much higher in mpg than me. That could be because they drive a larger percentage of the time on the highway, but I don't know because this metric is not displayed.
If it's not displayed, I believe it's because they are choosing to not input that info during their fuel ups. If you look at Ashley's Pearl, can you see their 74% highway 26% city split? It also lists the amount of city driving for each tank in the detailed info table.