Start with what the Jonga is: a car with Six-cylinder 3956 cc in-line petrol engine, from Nissan. What it meant takes a little longer.
The background
The Jonga is an Indian built second generation Nissan Patrol formerly used by the Indian Army. Jonga is an acronym for Jabalpur Ordnance aNd Guncarriage Assembly, manufactured by the Vehicle Factory Jabalpur. They were produced for the Indian Army under an exclusive license granted by Nissan in 1965. The vehicle entered service in 1969 and production ceased in 1999. It served as one of the Indian Army's jeeps until it was phased out and replaced mostly by the Mahindra MM540 jeep.
The engineering
The engine is Six-cylinder 3956 cc in-line petrol engine; other versions carried different engines, listed in the specification table below. Drive goes through a 3-speed manual gearbox. These are manufacturer figures carried by Wikipedia and Wikidata, not road-test measurements.
Where it sits
Its Nissan stablemates include the Nissan N6 and the Nissan N7.