Slightly off topic but I’m reasonably happy with my average MPGs so far. My daily commute consists of:
3 miles of twisty country lane, 17 miles of single carriage A road (with zero overtaking opportunities and nearly always a bus, lorry, tractor or horsebox causing a 5 mile tailback and a traffic crawl at around 36mph) with a final 6 mile cross-city section (although it does keep flowing with minimal stop/start).
Return journey consists of 6 mile city crawl (again minimal stop start and only two sets of traffic lights to contend with), then out onto some dual carriageway for a 5 mile blast, then onto the mundane A road which again dawdles along at around 35mph and finally the 3 mile twisty bit home.
I’m averaging 41 mpg doing that each day which is highly impressive. I’m driving in Normal mode. By contrast my A3 1.4 150ps with cylinder deactivation used to average 48mpg on the same trip which again highlights just how efficient the GTI can be in the right circumstances and with the correct style of driving.
However, I suspect it’s a different matter once I get on some open roads evenings or at the weekends 😬