Best Economical Small Cars

My car is dying and I need a new one. So I've taken a very geeky approach to finding a new one.

The Costs

I realised the main cost from running my car are from:

1. Fuel
   By my calculations, I spend about £40 a week on unleaded petrol. Which works out at quite a large yearly cost. 40 x 50 (52 weeks minus a couple of weeks holiday) = £2,000
2. Maintenance
   I checked my credit card statements for last year and I spent just under £1200. So about £100 a month. I've spent about £300 already this year.

So it's costing me about £3,200 a year to run my car. Not including tax, which is relatively small compared to these 2 factors.