Start with what the Mazda 616 is: a car with gasoline engine, from Mazda. What it meant takes a little longer.
The engineering
The engine is gasoline engine. On the scales it comes to 1005 kg. These are manufacturer figures carried by Wikipedia and Wikidata, not road-test measurements.
Where it sits
Its Mazda stablemates include the Mazda BT-50 and the Mazda T2000.
Owning one today
EPA combined economy is 30 mpg, about $2,600 a year in fuel at the EPA's assumptions. Condition, mileage and specification move any single car a long way from a headline figure.