Actually, in real world use (because C! usually uses northern testing routes, which are less crowded... and they have many different drivers, so testing methodology is sometimes suspect)... again, in real world use, the Mazda3 1.6 gets around 10-11 km/l in mixed driving, while the 1.5s get around 14 km/h in the same situation, and the Jazz 1.3 gets 16-17 (from owners).

I'd pick the Mazda3 1.6 myself, biggest interior, most comfortable, most expensive, yes, but you're buying a lot of space for that money.