Agreed, a short journey profile hurts any car's economy especially from cold starts. but 50mpg for a 2 mile journey is still very good. my 2 mile journey to my village shop is hilly, and from cold I get between 36 and 44mpg this time of year. coming back, with a slightly warm engine, about 46-50mpg. take the car on a country run for 15 miles, and its back up to 65-70mpg, using heater, aircon etc. so yes, a huge range of consumption numbers. BUT I'll still wager thats miles ahead of a standard petrol or diesel, as they too still have to warm up. for example my golf petrol mild hybrid on the same 2 mile journey to the village shop in winter gets approx 25mpg, whereas its lifetime average is approx 50mpg, as I use it mainly for long motorway trips, where its in its element.