You're right to search for a petrol for short journeys but, as you're finding, most buyers of new cars of this size are high-mileage company car drivers, so there aren't many second-hand petrol examples on the market. A Mazda 6 is a good option, as is the Mondeo. I'd also look at the Honda Civic - it's smaller than the Ford and Mazda, but it has a bigger boot. There are more about, too, and it will be very reliable.