REXEV Starts API Integration with Mitsubishi Motors' Vehicle Data Platform

REXEV Co., Ltd. (Headquarters: Chiyoda-ku, Tokyo; Representative Director: Ken Watabe; hereinafter “REXEV”), which provides EV introduction support and develops EV energy management systems, has started vehicle data linkage via API with the “Mobility Service Platform” provided by Mitsubishi Motors Corporation (hereinafter “Mitsubishi Motors”).

Through this collaboration, REXEV's EV car-sharing system will be able to acquire and utilize real-time vehicle data, such as the state of charge (SoC) of Mitsubishi Motors' light EV "eK X EV."

Car-sharing services utilizing this function will be progressively launched starting in March 2026. This is REXEV's first commercial operation of EV car-sharing that leverages API integration with connected data provided by an automobile manufacturer. This collaboration will allow some of the vehicle data acquisition, traditionally handled by aftermarket in-vehicle devices (hereinafter "in-vehicle devices"), to be replaced by the vehicle manufacturer's connected functions. This simplification of in-vehicle device configuration is expected to improve service operational stability and reduce maintenance burden.

Vehicle data acquired through this integration will be utilized in various services such as smart chargers, Flemobi, and car-sharing, primarily for energy management.

Background and Purpose of this Collaboration

Traditionally, EV car-sharing required the installation of in-vehicle devices to monitor the vehicle's charging status and condition. However, these devices incurred installation costs and presented challenges due to varying data accuracy across different vehicles, hindering large-scale deployment.

Through this collaboration, high-precision vehicle data can be managed without additional devices by directly acquiring data via API from Mitsubishi Motors' "Mobility Service Platform." This will improve the accuracy of energy management, leading to optimized EV operation and advanced vehicle reservation management.

Furthermore, by eliminating the need for in-vehicle device installation, initial introduction costs can be reduced, and the burden on users can be alleviated. In the future, this is expected to enable the expansion of compatible vehicle models and flexible service deployment.

Benefits of Data Integration

1. Advanced Energy Management

Utilizes real-time charging data to optimize charging control and improve electricity usage efficiency.

2. Reliable Reservation Management

Accurately calculates driving range based on real-time charging status, preventing issues caused by insufficient charge.

3. Reduced Operational Load by Simplified In-Vehicle Device Configuration

For car-sharing, API integration eliminates the need for in-vehicle devices to acquire vehicle data, allowing them to focus on basic functions like key control. This suppresses the risk of failures and configuration errors, leading to improved operational stability.

4. Smoother Support for New Vehicle Models

Since acquired data is standardized to some extent on the manufacturer's side, individual development and settings for each vehicle model are not required on the in-vehicle device side, reducing the effort required when adding new vehicle models.

5. Efficient Vehicle Management

Centralized management of vehicle location and status on the system, reducing maintenance man-hours.

6. Seamless Introduction

By utilizing the connected functions installed in the "eK X EV," the installation of in-vehicle devices and initial setup processes are reduced, enabling rapid service launch.

Future Outlook

REXEV will expand the utilization of vehicle data from this collaboration to various services, primarily focusing on energy management.

This function is already being utilized in the EV car-sharing business in Okazaki City, Aichi Prefecture, and will serve as the foundation for future service developments.

Moving forward, REXEV will deepen its collaboration with Mitsubishi Motors to contribute to the realization of a sustainable society by integrating energy management and mobility services.

*Details of Okazaki City's initiative "Okazaki Public EV Share" can be viewed on the following page:

https://www.city.okazaki.lg.jp/shisei/koho/1006195/1006358/1014373/1014599.html

Mitsubishi Motors' release regarding this matter can be viewed on the following page:
https://www.mitsubishi-motors.com/jp/newsroom/newsrelease/2026/20260331_1.html

Contact for inquiries regarding this matter

REXEV Co., Ltd. Public Relations Department
Tel: 03-3525-8008 E-mail: info@rexev.co.jp