1. AB Volvo
2. BorgWarner Inc.
3. CNH Industrial NV
4. Cummins Inc.
5. Ford Motor Company
6. FPT Industrial S.P.A.
7. Honda Motor Company
8. Hyundai Motor Company
9. Landi Renzo SpA
10. Maruti Suzuki India Limited
11. Mijo Auto Gas Pvt. Ltd.
12. Minda Industries Ltd.
13. Nissan Motor Corporation
14. Robert Bosch GmbH
15. Suzuki Motor Corporation
16. Tata Motors Limited
17. Volkswagen AG
18. Westport Fuel Systems Inc.