[RedDevil]

You may also have a look at second gen Insights; their real world economy is not worse than 2nd gen Priuses and they are quite cheap nowadays.
They are slightly smaller (based on the Fit platform) and the rear bench only takes 2 people under 6 feet comfortably, or maybe 3 if they are slender.

There are a few other things to take into account.
The Insight charges its 12V battery very mildly, so when a cell gets out of balance it will degrade as it is never fully charged again. Then if the car sat for a few days the voltage drops to 8-10 Volt and you get a myriad of strange errors as the many systems start detecting sensor readings that are off, instead of recognizing the low feed voltage.
People may get rid of the car for that while all it needs is a new 12V battery!

The 2012 and early 2013 Insights had a piston ring problem, many of those have had them replaced under warranty but you have to make sure that happened.

The CVT may cause problems if the oil has not been changed at the intervals or if they used the wrong CVT fluid (for clutchless CVTs - but this one has a clutch and it will slip with the wrong oil).

Apart from that, it is a pretty trouble-free car.
It is very economical, especially at a constant pace around 55-60 km/h on level ground; on a warm windless day I may see 2.5 l/100 km or about 90 mpg for whole stretches.

It tends to drop the revs to 1100 RPM when driven mildly, and above 55 km/h it will max out the CVT and the revs climb with the speed (so f.i. 2000 RPM at 100 km/h).
When you floor it the revs will quickly go up to 6000, and as you are usually coming from 1100 RPM or thereabouts some people freak out on that, but it is perfectly normal.
It will accelerate well enough when you floor it, but if you are intent to keep the revs under 2000 then it is a lazy bugger (though quite efficient).

At highway speeds the acceleration may disappoint, especially if you are unwilling to floor it for the revving. In town it is quite zippy, as in have patience with the people ahead when the light turns green.

As for economy; my stats show what you can expect when you drive very moderately and stick to the right lane on the freeway. Bear in mind these are winter stats as I haven't filled up since March 1st.