Mazda introduces facelifted Demio with 1.3L SKYACTIV engine in Japan; hybrid-like fuel consumption at a lower price
|Demio SKYACTIV-13. Click to enlarge.|
Mazda began taking pre-orders for the facelifted Mazda Demio (known overseas as the Mazda2) at all Mazda, Mazda Anfini and Mazda Autozam dealers throughout Japan; the sales launch is scheduled for 30 June. The updated Demio offers a new 13-SKYACTIV model grade that features the new 1.3-liter gasoline direct injection SKYACTIV engine (earlier post).
Combined with an updated version of Mazda’s idling stop system, i-stop, and a continuously variable transmission (CVT), SKYACTIV-G 1.3 will achieve fuel economy of 30 km/L (71 mpg US, 3.33 L/100km) on Japan’s 10-15 mode test cycle, or 25.0 km/L (59 mpg US, 4 L/100km) on the newer JC08 test cycle. By comparison, the Prius S model is rated at 35.5 km/L (84 mpg US, 2.8 L/100km) on the 10-15, and 30.4 (72 mpg US, 3.3 L/100km) on the JC-08. Starting price (including taxes) for the SKYACTIV-G 1.3 is ¥1,400,000 (US$17,430); starting price for the Prius S is ¥2,200,000 (US$27,400). Mazda is hoping that the Demio’s lower price point will give it some traction in the market against hybrids.
|Fuel economy (10-15) km/L [mpg US]||30.0 ||35.5 |
|Fuel economy (JC-08) km/L [mpg US]||25.0 ||30.4 |
Mazda’s Life Cycle Assessment (LCA) calculates that the facelifted Mazda Demio will produce 11% less carbon dioxide (CO2), 6% less NOx, 5% fewer non-methane hydrocarbons (NMHC), and 7% less SOx over its lifetime than the previous model.
The 1.3-liter direct engine features a compression ratio of 14.0:1. A cooled EGR system cools part of the exhaust gas and returns it to the combustion chamber in order to suppress knocking. Newly developed multi-hole fuel injectors with six injection nozzles also effectively suppress knocking by using the latent heat of vaporization to cool the combustion chambers.
Specially designed piston cavities prevent the flame coming in contact with the piston heads to reduce the combustion time and decrease cooling losses. Reduced mechanical friction in the engine—due to lighter pistons, conrods and other parts, and low-tension piston rings—also decrease energy loss.
|“We will make sure this car is successful. Our company’s future depends on it.”|
|—Takashi Yamanouchi, Mazda president|
Mazda’s first dual sequential valve timing system (dual S-VT with electronically-operated intake) contributes to high power output and low fuel consumption.
An updated version of Mazda’s idling stop system, i-stop, operates with a higher frequency, requires less fuel to restart, and achieves a smoother restart.
The 13-SKYACTIV model grade uses drive force control that optimizes torque delivery from the engine and continuously variable transmission (CVT). It responds precisely to slight movements of the accelerator pedal to provide the desired level of acceleration for smooth and linear vehicle movement.
The 13-SKYACTIV model grade uses aero parts—including an engine under cover and rear roof spoiler—to control airflow above and below the body. It achieves a top class drag coefficient (Cd) of 0.29, and improved fuel economy and stability when driving at high speed.
The 13-SKYACTIV model grade features Dynamic Stability Control (DSC) and Mazda’s Traction Control System (TCS). In the 13-SKYACTIV model grade, the DSC is built into the electronically-controlled brake-assist system.
The Demio is the first model to feature SKYACTIV technology. The 13-SKYACTIV model also features “intelligent-Drive Master” (i-DM), a new driver aid that supports enjoyable driving while encouraging a driving style that enhances passenger comfort and improves fuel economy. The i-DM display on the dashboard indicates the driver’s inputs at the controls in real time, and provides an overall score and practical advice at the end of each trip. The score from each trip is used to calculate a driving skill level, from Stage 1 to Stage 3. By progressing through the stages, drivers can feel that their driving skills are improving.