That depends on which Cessna. Many of the earlier Cessnas were made to run on regular auto gasoline, however now most need avgas or jet fuel.
100 LL Avgas.
Avgas 100LL
A Cessna is a type of airplane.
how much fuel does a 406 Cessna take
There is not, and never has been a Cessna called 'Mustang'
You nust have a number wrong, there is no record of a Cessna 142
That there is no fuel in it!
There are many different kinds of Cessna so your question is un-answerable.
20.3 gallons
The fuel tank capacity of a Cessna Citation jet varies by model. For example, the Cessna Citation 550 has a fuel capacity of approximately 6,000 pounds, while the Citation X has a capacity of around 6,900 pounds. Generally, Cessna Citation jets are designed for efficient long-range travel, with fuel capacities that support various flight distances depending on the specific model.
Avgas 100LL
It depends on which Cessna you have, whether you have added auxiliary fuel tanks to it, and how much cargo and pax you are carrying.