The datasheet doesn't answer this question, but the manufacturer may be able to. It seems to be
generally sensitive to organics than can be catalyzed to oxidize on the sensor heated element, which
suggests it ought to work (it works well for propane and butane for instance which are similar
in properties to the hydrocarbons in petrol).
It is something you could test if you can devise safe way to expose a sensor to a known concentration of the
vapour yourself - but without risking the kind of explosion you seek to prevent... perhaps outside well away from
buildings and flamable stuff in a cardboard box (cardboard shrapnel isn't scary!)