And I quote: "Unfortunately, my abbreviated test didn't allow for accurate fuel economy testing. But Mitsubishi claims 5.4 litres per 100 kilometres for the i. In more practical terms, this tiniest of Mitsubishis will probably suck back a tad more fossil juice than the Smart but substantially less than what most Prius owners actually achieve in real-world driving." Anyone care to refute that? Substantially less? I think it's the other way around. We use substantially less fuel than the i.