The agreement was signed by Gujarat principal secretary Maheswar Sahu and PSA Peugeot vice-president (emerging market and India) Fredic Fabre in the presence of Gujarat Chief Minister Narendra Modi in Ahmedabad.
Gill, who studied at Modern School and Hindu College in Delhi, joined Deutsche Bank in 1991 and became its India CEO in 2012.
The Naveen Patnaik-led party bagged 112 of the 146 assembly seats despite the Modi wave in the country.