One of the key determinants of a good bus manufacturing company is the availability of its spare parts in the local markets. A brand new bus depreciates almost 45% after hitting the road. Similarly used buses for sale need to be repaired and serviced on a regular basis. Usually all shuttle buses last up to 15 years or up to 100,000 miles. During this period the vehicle is subjected to tremendous wear and tear. It may run into an accident or bump over a huge pot hole on the road and break some of its parts and components. When it happens spare parts should be readily available in the local markets. For example Amazon, Ebay, bus repair shops, bus dealers etc. When the parts are easy to source, they can be readily purchased and replaced with older worn out components within a few hours. However, when they are not available in the local markets, then starts the big chase to import them from other provinces or worst countries. It increases the overall cost of replacing the part. Which includes traveling, over night stays in hotels, cost of equipment, shipping and hauling charges etc. If its imported from other countries then the total price includes custom charges too. Moreover, since the parts are rarely found in the local markets, chances are high many technicians may not be aware of how to fit them into the bus. Thus specially trained mechanics will be required to complete the task. Cumulatively it will delay the bus getting back on the road. https://www.quora.com/Which-companys-buses-are-the-best/answer/Charles-Kaufman-8