Don't buy a small car for 100 mile daily trip. I did it, and after having a bigger car realised how nasty my commute was in a small car.
Would a Focus or Golf TDi fit the bill?
Budget of up to £10,000.
Buy a replacement car by all means but buy it because you want a faster/sleeker/bigger/smaller/saloon/
convertible/more reliable/uglier/prettier car, not because you're trying to save money on fuel because that makes ABSOLUTELY NO FINANCIAL SENSE whatsoever.
I had a fiesta 1.4 diesel doing 100miles per day up the M5. It was fine and cost me very little. However, after now driving a Mazda 6 2.0 Diesel the comparison is outstanding. Not to mention I get home a little quicker.![]()