There really is no right or wrong answer when it comes to choosing between in-house maintenance, outsourcing or a combination of practices. Fleet managers employ different approaches to making those decisions.
Among the factors they need to consider are shop space. Trucks waiting for an open bay increase downtime so in those cases expanding or outsourcing might be the answer. If you are outsourcing, a mobile service truck might help as well.
Other factors in this complex decision involve technicians and their skill sets, shop tools, and hiring and training needs. And don’t forget to address parts, tires and supplies.