|The new Demio (Mazda2).
Mazda Motor Corporation announced the Japanese launch of the fully redesigned Mazda Demio (known overseas as the Mazda2). As of May 2007, the Demio family, first introduced in 1996, had a total production volume in Japan of more than 1,040,000 units and had become Mazda’s biggest selling model in the Japanese market.
At the launch event, Mazda President Hisakazu Imaki said that the automaker is considering launching a new model that would be smaller than the Demio, which is currently the smallest vehicle in the company’s lineup.
With a completely redesigned body and chassis, the new Demio is around 100 kilograms lighter than the previous model. The Demio 13C-V grade combines Mazda’s newly developed, naturally aspirated MZR 1.3L Miller-cycle engine with continuously variable transmission (CVT) to achieve 10-15 mode fuel efficiency of 23.0 km/L (4.35 l/100km or 54 mpg US). This represents an improvement of approximately 20% over the previous Demio model.
Newly developed from the current MZR 1.3L DOHC aluminum engine, the Miller-cycle variant employs delayed closing of the intake valves in order to reduce pumping losses and improve thermal efficiency through a higher expansion ratio. Intake valve timing is optimized by the Sequential Valve Timing System to provide improved fuel efficiency over the current MZR 1.3L engine when cruising and accelerating.
The Demio also offers conventional 1.3L and 1.5L engine options as well. All model grades offer emissions at least 75% lower than Japan’s 2005 standards.
The new Demio marks Mazda’s first use of a CVT—in both the 13C-V and two 1.5L models. For the CVT used in the 1.5L SPORT grade, a seven-speed manual mode is included that enables the driver to shift up and down using steering wheel-mounted paddle shifters.
The Demio is also the first car produced by Mazda which has electric power-assisted steering built into the steering column. The amount of assistance varies depending on vehicle speed and driving conditions to enhance the driver’s connection to the car. This technology also improves the Mazda-unique driving feel and contributes to better fuel consumption, whether maneuvering at low speeds or cruising on the highway.
After a full chassis design review, the use of 980 MPa-grade ultra-high-tensile steel and high-tensile steel was increased in order to enhance body rigidity and safety levels. Strengthening the sheet steel welds in the door and tailgate frames further improved the body local rigidity and allowed further weight reduction.
The all-new Demio has outstanding aerodynamic characteristics with a drag coefficient of 0.32, which contributes to its improved fuel efficiency.
To reduce the concentration of volatile organic compounds (VOC), the Mazda Demio employs low-VOC emitting resins, paints, and adhesives in the cabin. It satisfies the indoor VOC concentration level guideline figures for 13 substances that were set by Japan’s Ministry of Health, Labor and Welfare.
|New Demio Engine Options
|10-15 fuel econ.
|Equiv. fuel Cons.
|Equiv. Fuel econ.