Need help buying an st170 and advice

[Chev]

Hay guys an gals

I have 4k to spend on st170 an just dont know where to start, i need a 5dr as i have a 2month old son to think about,

I've seen a few around my area, 2002-03 with anywhere between 40-60k on the clock ranging from £3200-4200

Is there any thing in particular i should be looking for when i go check one out?

I've been reading up on mpg an combined they reckon you should get 31.9, so in reality how true is this what you guys getting?

How about the servicing, how often is a service how much and how often are the big services?

I am 25 with 3 years NCB but getting insurance quotes of 770 fully comp an 610 3rd party fire an theft, any ideas of any insurance companys that can do it cheaper?

Hope some one can help

Cheers

Chev