We have a Toyota Avensis estate. The room in the boot is great, as you'd expect from an estate car but I think that Mondeo/A4/Passat estates are probably a bit bigger.
It's comfortable inside and long distance journeys are fine.
It's quite economical on fuel compared to others with engines of similar sizes.
No room in the back for more than two large carseats, not a problem for us as we have two children, one of whom only needs a booster anyway.
This is my husband's company car, chosen because it's cheaper than other similarly sized cars on tax.
As a family car I'd recommend it, it ticks all the boxes for long and short distance family journeys.
It's just a wee bit dull, but for it's purpose it's great.