The Power Of 1000cc. Toyota IQ Toyota first introduced the iQ as a concept city car at the 2007 Frankfurt Auto Show. The design emphasizes low fuel consumption, maneuverability, environmental friendliness, and maximized interior space. Six specific design factors contribute to IQ's minimal overhangs, forward windscreen location, maximized cabin space and overall compactness. These include a newly developed differential and a centre take-off steering gear, a flat fuel tank and rear-angled shock absorbers, a smaller heater/air conditioning unit and asymmetric dashboard, and a slimmer seat design which retains comfort while increasing interior room.