To achieve a breakthrough with the gasoline engine, Mazda engineers conducted intensive research into innovative ideas and technologies for achieving ideal combustion. These ideas are combined in the next-generation direct injection gasoline engine “Mazda SKY-G,”^* which is currently under development. The fuel economy of the “Mazda SKY-G^* 2.0L” engine demonstrates about a 15% improvement over the current 2.0L gasoline engine. In performance terms, it has been confirmed that the engine generates approximately 15% more torque.

Generally speaking, diesel engines already deliver relatively good fuel economy. However, improving fuel efficiency even further while simultaneously reducing nitrogen oxide (NOx) and Particulate Matter (PM) emissions is a major technical challenge that has, until now, been seen as extremely difficult. To break through this barrier, we aimed to achieve ideal fuel combustion in the development of the next-generation “Mazda SKY-D”^* diesel engine. The result of our efforts is clean emissions to meet anticipated strict future regulations, along with a 20% improvement in fuel economy compared with the current diesel turbo engine, and a substantial increase in low-and high-end torque for enhanced overtaking acceleration.