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Toyota and DENSO Transition Mass Production Engineering to MATLAB R2015a Release

Successful Transition Program Reinforces Commitment for reducing the Model-Based Design running cost and model-based incremental development

Tokyo, Japan - (12 Oct 2015)

MathWorks today announced that Toyota and DENSO CORPORATION, Toyota’s primary automotive electronics supplier, have chosen to transition their automotive mass-production programs from MathWorks R2010b to R2015a release. This release of the MATLAB and Simulink product families includes a wide range of productivity enhancements, including in the areas of automatic code generation and verification.

Toyota and DENSO both use MathWorks modeling, simulation and C code generation products in their ECU production software development. With the spread of Model-Based Design, both companies have been able to realize benefits such as;
- Enhancement of Productivity: enhance the productivity of operation by improving workflow efficiency and product usability in every MBD process.
- Incremental development adoption: support incremental development from existing models, which engineers spent more than 90% of their daily work in MBD.
- Continuous feature improvement: improved features of key MBD products such as Embedded Coder for automatic C code generation, and Simulink Design Verifier™ for enhanced model verification capabilities

During the past five years, MathWorks has improved product usability such as improving the Simulink and Stateflow editor to enable productivity improvements of Model-Based Design. The R2015a MATLAB and Simulink products have improved usability with an enhanced editor, increased performance with fast simulation restart capability, added incremental development support with the Model Slicer feature of Simulink Design Verifier, and simulation testing with Simulink Test.

Using R2015a as a common platform enables Toyota and DENSO engineers to realize efficiency and productivity benefits of model based incremental development in current and future production vehicle development.

According to Shigeru Kuroyanagi, head of Toyota’s motor control system infrastructure development group, "Toyota, Denso and MathWorks began cooperative development activities in 2003 to address the industry’s need in the vehicle development field. Using R2010b as a third-generation toolset, we were able to apply automatic code-generation for mass production, and with R2015a we are able to further improve incremental development and design verification. Having the enhanced feature for vehicle development, the result is a positive impact on our productivity."

“Toyota and DENSO’s commitment to Model-Based Design shows how MathWorks software continues to be used by the automotive industry around the world for product design and development,” said Andy Grace, vice president of engineering for design automation at MathWorks. “We have been building our close relationship with Toyota and DENSO for nearly 20 years as part of a collaborative effort to develop the engineering tools required by the automotive industry. During the past 12 years, we’ve focused on meeting specific needs for production use at Toyota and DENSO. We are pleased that our efforts to create high-quality software for mass-production usage have been recognized by Toyota and DENSO.”

About MathWorks

MathWorks is the leading developer of mathematical computing software. MATLAB, the language of technical computing, is a programming environment for algorithm development, data analysis, visualization, and numeric computation. Simulink is a graphical environment for simulation and Model-Based Design for multidomain dynamic and embedded systems. Engineers and scientists worldwide rely on these product families to accelerate the pace of discovery, innovation, and development in automotive, aerospace, electronics, financial services, biotech-pharmaceutical, and other industries. MATLAB and Simulink are also fundamental teaching and research tools in the world's universities and learning institutions. Founded in 1984, MathWorks employs more than 3000 people in 15 countries, with headquarters in Natick, Massachusetts, USA. For additional information, visit

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Toyota Motor Corporation, headquartered in Toyota, Aichi prefecture, Japan is one of the largest automakers in the world, producing a full range of vehicle models from mini-vehicles to large trucks. In fiscal 2014, ended March 31, 2015, Toyota provided over ten million vehicles on a consolidated basis to customers around the world under the Toyota, Daihatsu, and Hino brands. Toyota is a global automobile manufacturer, producing vehicles in 28 countries and regions and marketing vehicles in more than 170 countries and regions, with 16 production lines in Japan. Toyota had approximately 340,000 employees as of December, 2014.


DENSO CORPORATION, headquartered in Kariya, Aichi prefecture, Japan is a leading global automotive supplier of advanced technology, systems and components in the areas of thermal, powertrain control, electric, electronics and information and safety. Its customers include all the world’s major carmakers. Worldwide, the company has more than 200 subsidiaries and affiliates in 38 countries and regions (including Japan) and employs approximately 146,000 people. Consolidated global sales for the fiscal year ending March 31, 2015, totaled US$35.9 billion.null