I actually bought one
I had a 15 year old Audi 80 diesel which gave me 50-60mpg which I had intended to replace next year. However
- my old Mum found the seat uncomfortable
- several bits(not of the byte sort) were a bit dodgy and my MOT was going to be expensive
- dear Gordo had made diesel more expensive than petrol
- some idiot had arranged to refund me £2000 for a load of crap
I chose the Prius because
- my old Mum found the seat comfortable
- I wanted a reasonable size saloon
- I wanted a good mileage
- the vehicle tax is zero
My experience has been
- the best was 76mpg on a 10 mile journey over an inadequate A class road with about 3 miles in a 30mph area
- 66mpg on a 220 mile journey over motorway and A class road split about 50/50 and going as fast as was safe for the road including some 30mph areas in towns
- never less than 60mpg for any journey although it does dip below this with a lot of uphill during journeys but then the downhill kicks in
- EV mode is not required because it defaults to electric power if you trundle around slowly anyway
- ECO mode is good if cruising at a steady 25 -35mph but needs to be disengaged if doing a lot of acceleration even at slow speed in traffic
- acceleration in no-mode is more than adequate but engage PWR mode and it rams your back thru the seat back. You can engage/disengage by pressing a button as you go along so you get the extra oomph for overtaking and cut it once you are cruising again
- the central console makes it impossible to enter via the passenger side if some idiot blocks the drivers door
- rear visibilty is poor and even forward visibilty for parking nose in is more an estimate than a visual judgement.
- the interior plastic is definitely a rather cheap let down but who cares its a car not a girlfriend
- I intend to keep the vehicle for about 15+ years and being "green" played no part in my decision although the fuel consumption and zero vehicle tax is a benefit of greeness.
Overall I am pleased with it and although it has some quirks like the foot handbrake and no ignition key (just a starter button like when I learned to drive) you soon get used to it.