Mahindra First Choice, a subsidiary of Mahindra & Mahindra, is eyeing a big space in the car service industry after OEM maintenance, an official of the company said. “The after-market car service industry is presently having a size of Rs 20,000 crore. Out of this, half is taken away by the local garages,” Mahindra First Choice CEO Y V S Vijay Kumar said here on Wednesday.