The given chart illustrates the amount of time that was needed to manufacture transportation of four specific US producing brands during the period of 5 years from 1998 to 2002.
In general, most of the production time witnessed a downward trend. Nissan had the most dramatic change whereas DC is considered to have been the least erratic.
To commence, in 1998, Nissan’s initial hours of manufacturing was at peak of nearly 37 hours while that of GM was insignificantly lower, amounting to nearly 32 hours. However, in the next 4 years, this statistics experienced a 16 hours decline, making this brand became the fastest vehicle producer among the four surveyed brands. GM also followed the same pattern when its production time showed a constant decrease and ended up at only less than a day to create a complete vehicle, the second-lowest time in the final year of the analyzed period.
Conversely, during the four fifths of the time frame, the manufacture time of Ford notably rocketed to approximately 27 hours, however, after some efforts were made by the brand, this amount witnessed an hour decline and ranked the second-longest productor. Having followed a slightly different pattern, the production process of DC was relatively fluctuating. In the initial year, this brand was faster in finishing a product than Nissa. Nevertheless, after hovering between 31 and 32 hours for three years, the brand seemed to not have been able to find an utmost way to improve the manufacturing time, resulting in having the slowest production process among the four surveyed brands.