For a Ford vehicle, the odometer can be read via a mode $22 PID of $6180 for km clusters, and $6182 for mph clusters. Fuel level is standard mode $01 stuff, but mode $22 data is usually available also.
if you do not know the OEM specific pids you would still be able to read the miles/km travelled by reading the vehicle speed mode 01 pid 0D and calculating distance travelled during that interval.
Fuel level can also be calculated indirectly by reading the Mass air flow reading mode 01 pid 10 - there are some threads here on how to get MPG using this method
Linear Mode
