I have a 07 plate Accord and while its good its not been without its problems unfortunately (Manifold cracked, rear calipers ceased, alternator gone) but its massive (Bike will fit in boot with seats up and load cover over it. Put the seats down and i can put my wire framed camp bed up in it and stand the bike up next to me.
Fuel wise, 44-46mpg when just pootleing around and teh wife is driving it, just short of 60mpg on a run keeping it just under 70, or 40mpg on an alps trip last year with 4 people, 3 bikes on the back, one on roof and roofbox and camping gear.
Other options are the Passat but lots of them have loads of owners which tells you something and the handbrake is an issue, a big one in my eyes!
5 series is my ideal car but next price level.
3 Series, you seen how small the boot is? pointless IMO
Mondeo, not bad but its a ford. Look nicer in a more unusual colour for a ford, say red with silver bits on.
Mazda 6 – No where near as big as the accord but has a really lovely engine, sounds gorgeous for a diesel and the 170bhp model has loads of power. A lot more than the accord. If a massive boot isnt essential these are a great buy.
Skoda, they are alright aint they, like a trusty pair of doc martins. Good workhorse but not a very inspiring car in any way.
V70 – Really heavy on fuel, like late 20’s if you have a moderately heavy so watch that one
V50 – too small, waste of time
Audi – A4 not that big, A6 similar category to 5 series, nice but depends if you can afford the prices, getting near T5 league then.