Last tank on my gen 4 RX was 36.6mpg calculated brim to brim, mostly eco as it lets go of the engine quicker and I am tight b*st*rd. if you can live eco and with less than 60mph on the motorway I suspect you would do better than 32mpg. I sometimes do that just to see what I can achieve, usually ~38-40 mpg, it soon drops back at 70mph and over though.Other times I am forced to crawl along through stop start traffic on the M62 which very quickly depletes the battery and kills the figure but I am still managing average of 35.5mpg over 13 months. The car computer is strangely accurate and it also indicated 36.6mpg for the same tank. I have never had that before, usually car is plus ~10%