Why dimethyl ether is not used as a fuel?

Dimethyl ether (DME) is not widely used as a fuel primarily due to its production challenges and limited infrastructure compared to more established fuels like diesel or natural gas. Although it has a high energy density and burns cleanly, its current production methods can be costly and complex. Additionally, the lack of widespread distribution networks and engine compatibility hinders its adoption as a mainstream fuel option. While it shows potential, further advancements in production and infrastructure are needed for it to become a viable fuel alternative.