What's the best used, small, automatic car?

I'm looking to buy a used, automatic, small car for my 22-year-old son. It will be his first car and our budget is £3000 - £4000. Ideally it will be a low insurance group, but I mostly want you to recommend...

What mid-size, automatic can I get that's reliable and cheap?

I've just passed my test and would like to buy a cheap, reliable, mid-size automatic (about the same size as a new design Vauxhall Corsa as it's what I passed in). As long as the automatic gearbox is known...

When should I change the transmission fluid on a torque converter gearbox?

I can not find any torque converter gearbox servicing requirements. Does the torque converter oil need replacing at prescribed intervals?

What do you think about buying a secondhand 2009 Honda Jazz automatic?

How would you rate a 2009 Honda Jazz automatic with 30,000 miles on the clock. It's being sold for £3750.