Four wheeler manufacturers:

•  Maruti Suzuki
•  Eicher Mitsubishi
•  Ashok Leyland
•  Tata Motors
•  Hindustan Motors
   (Mitsubishi Engine  Division)
• Swaraj Mazda Limited
• Punjab Tractors Limited

Heavy Earthmoving vehicle Manufacturers:

•  Caterpillars
•  BEML
•  JCB India

Two wheeler Manufacturers:

•  Hero Honda Motors
•  Bajaj Kawasaki
•  Honda Scooters
•  Yamaha Motors
•  Piaggio
•  Suzuki Motorcycle India Pvt. Ltd.

Axle Manufacturers

•  Automotive Axles Ltd.
•  Axles India Ltd.

Indian Railways