Mira is 660cc. Off course small engine, less fuel consumption.
Yaris is 1000cc more fuel consuming but b'coz of manual tranny a good driver can bring its fuel average close to a 660cc engine's average.
Both can be installed with CNG
Both are fully powered & with common safety features.
Both have good resale value here in Karachi.
Their prices have a difference of around 3 lacs.
I have both of these cars for Sale, both are Unregistered, both in Silver color.
Check the details here: