The chart below gives information on the quantity of time taken to manafacture a vehicle by four US-based a car producers between 1998 and 2000. Looking from an overall perspective, it is readily apparent that the production of vehicle time in four US-based car producers declined to varying degrees, with the exception of Ford, which showed a a slight increase, The figure for Nissan is dominant at the beginning, but dropped sharply with overtaking all car producers. Despite the downward trend, it recorded the highest figure at the end of the period.
In 1998, Nissan was produced in 37 hours, which was slightly higher than the DC, at 34 hours, while GM showed slightly lower with 32 hours, which had much lower than Ford, at 25 hours.By 1999, manafacturing at Nissan had decreased by 6 hours, and that at the DC and GM also decreased by 1 hours, while Ford was remained relatively unchanged. For the rest of the period, the figure for Nissan uninterrupted fell to 14 hours by 2000 and slight decreased by 2 hours in 2002. Meanwhile, production in the GM decreased steadily throughout.
By contrast, manafacturing in DC declined by 3 with some fluctuations, while Ford slightly increased by 1 in 2001, and decreased by the same percentage points in 2002.