The letters "iQ" also stand for "individuality", "innovation", "quality", a hint at its "cubic form" and also a "cue" for owners to embrace new types of vehicles and lifestyles.

[citation needed] The IQ design emphasizes fuel efficiency, maneuverability, low environmental impact, and interior space.

Six design factors enable the minimal overhangs, forward windscreen location, maximized cabin space and overall compactness: The iQ features a transmissions differential housing located ahead of, rather than behind, the engine; a starter motor incorporated in the engine's flywheel, a high-mounted steering rack and a compact, high-located air conditioning unit behind the dashboard central area.

[5] Because of its overall width and engine displacement, the iQ is classified in its home market as a supermini, though its length complies with kei car dimensional regulations.

Toyota internally designated the iQ as the AJ10, with further sub-model chassis codes: The two seat variant was marketed solely in Japan.

In 2013, the UK's Vehicle and Operator Services Agency voted the Toyota iQ as top three-year-old car most likely to pass its first Ministry of Transport road worthiness test.

[19] Daihatsu noted that for most vehicles including the iQ, "performance standards stipulated by laws and regulations are [still] satisfied".

[21] The production Scion iQ debuted at the 2010 New York Auto Show and was marketed for model years 2012 to 2015.

A prototype of the Toyota eQ (Scion iQ EV in the US) was exhibited at the 2011 Geneva Motor Show.

The exterior of the production version is based on the FT-EV III concept shown at the 2011 Tokyo Motor Show.

[8] The first 30 units were delivered in the U.S. to the University of California, Irvine in March 2013 for use in its Zero Emission Vehicle-Network Enabled Transport (ZEV-NET) carsharing fleet.

[30] Designed as a city commuting vehicle, the iQ EV has a lower battery capacity that also translates into a shorter charging time, allowing the car to be fully recharged in approximately three hours, and using fast charging, the battery can be recharged up to 80% capacity in only 15 minutes.

The iQ EV has a 150 cell 12 kWh 277.5 V lithium-ion battery pack that delivers a NEDC-certified range of 85 km (53 mi),[25] and rated 80 km (50 mi) in the U.S.[9] Based on further development of Toyota's Hybrid Synergy Drive technology, the iQ EV's fully electric powertrain comprises an air-cooled, 47 kW electric motor/generator, the 12 kWh battery pack, a 3 kW water-cooled battery charger, an inverter, a DC/DC converter and a motor speed reduction mechanism.

Like other Toyota full hybrid vehicles, the iQ EV is equipped with a regenerative braking system.

[38] Sales were not restricted, but demand from existing Aston Martin owners for Cygnet was expected to take priority initially.

Aston Martin CEO Ulrich Bez announced shipping expectations of about 4000 per year at a price of about £30,000[39] – about three times as much as the iQ.

[40] Bez stated that the Cygnet demonstrated the company's "commitment to innovation and integrity", whilst respecting the need to "satisfy demands of emissions and space".

[41] The Cygnet featured revisions to the exterior and interior but shared other specifications with the iQ, having a 97 bhp (72 kW; 98 PS) 1.3L inline-four engine,[42] it produced 110 g of CO2/km and fuel consumption of 58.9 mpg‑US (3.99 L/100 km; 70.7 mpg‑imp).

[44] The Cygnet was cancelled due to disastrously low sales, with the car reaching only 150 units in the UK and fewer than 600 across Europe[45] rather than its annual target of 4000.

[53] It is based on the iQ platforms, steering and suspension but uses a three-cylinder engine and electric motor supplied by Lotus.

MODELLISTA MIXTURE includes custom B-pillar shadow, mirror cover, back window panel, side door trim.

It included a 1,329 cubic centimetres (1.329 L; 81.1 cu in) I4 engine, 6-speed manual transmission, stiffer sport suspension that lowers its ride height by 30 mm (1.2 in), rear disk brakes, RAYS 16x5.5-in aluminium wheels with 175/60R16 tires, enhanced brakes, stiffening brace, tachometer, aluminium pedals, rear spoiler, GRMN emblem and a sport exhaust system.