Toyota Prius Redux

You might have seen the adverts for the "next Toyota Prius", so Disgruntled tried to find out some information about this new model, so that he could compare it as he did before here. From the Toyota website, we find that the fuel efficiency of the next Prius is 72.4 mpg on the combined cycle, an improvement from the previous 65.7 mpg, but still lower than the VW Polo Bluemotion at 74.3 mpg. It also says that the CO2 emissions are "as low as" and "from" 89g/km, but doesn't say under what conditions - one assumes that this is under the best conditions possible, as if it uses more fuel than the VW, then the emissions are most likely to be higher. But I could be wrong here - Toyota need to clarify exactly what they mean. I still stand by my earlier conclusion - buy the VW, it is more fuel efficient and far cheaper.