You can use the same bus chassis for different purposes, but the final design and configuration are highly specialised. It’s important to remember that a manufacturer must leverage its engineering to create adaptable chassis platforms. However, the bus chassis is not a one-size-fits-all component; it's a foundation that is optimised from the start for its primary role.
For example, while Eicher may share engineering principles, their product lines are distinct. Their intra-city buses (like the Starline series) are built on a bus chassis designed for high passenger capacity, frequent stops, and easy boarding. In contrast, the Eicher Pro 6019 bus chassis is engineered for different demands.
The Eicher 6019 bus chassis price is justified for inter-city services because you are paying for a chassis and powertrain specifically engineered to enhance passenger comfort, luggage space, and long-term reliability on highways. However, using a truly universal chassis for city and long-distance routes would often lead to compromises in efficiency, cost, and passenger experience. The flexibility exists, but it is the manufacturer's targeted specialisation on the foundational bus chassis that ultimately delivers the best value for specific operational needs.