Autocar has it's first write up of their long term Prius in the current issue (it doesn't appear to be available online). Quite good overall.
What astonishes me is their criticism at the end that the car didn't manage 72mpg! It's been one of the coldest January's for a long time and they admit that the car has mainly been used in London. Which means shorter highly stop/go journey's and the car probably doesn't get much chance to cruise to warm up. Therefore it needs to keep turning over to keep itself up to temperature.
Mind you those EU consumption figures don't help. The US EPA quoted level of 60mpg (UK) is much nearer the mark. And that is certainly achievable in the warmer months.
One wonders also if over the 3 weeks they've had the car if they have adjusted to it. The writer admits he mainly leaves it in Power mode (how many owners do that?).