Gasoline or petrol fuel has a boiling point of 35oC(96oF) at atmospheric pressure and so definitely it will condense if you lower the temperature by cooling to less than than the above mentioned temperature.

Thank you Sir. Can we calculate what percentage of gasoline vapors present in the air would condense? Would Condensor pressure determine it?

What you need are the parameters of an Antoine equation for gasoline or an equivalent (e.g. Clausius Clapeyron) equation, so you can calculate the partial pressure as a function of temperature and total pressure (ambient pressure as I understand). This problem is similar to condensation of water out of humid air (where the condensation can be seen and calculated by usage of the Mollier-diagram).

Whether vapour condensation would happen or not depends on two factors: temperature and vapour partial pressure (Thus, total pressure also plays a role). If you know the gasoline vapour molar fraction in the vapour-air mixture and the total pressure, you can calculate the vapour partial pressure (P_vap). The dew point temperature is the temperature at which the vapour partial pressure equals/exceeds its saturated vapour pressure, i.e. P_vap >= P_sat. As H.S. mentioned above, you can use an Antoine equation to calculate the P_sat. Since gasoline is a complex mixture, the first drop is probably the heaviest components, with a carbon number of about C12. 

Thank you Sirs