Recently noticed a smell in my car which i though was petrol. Having looked today noticed that on the drivers side rear there is a cylinder which seems to be dripping which i believe may be fuel. (it smells of a petrol/terps)

I have been told it could be the air conditioning which may be leaking, although it could also be a fuel cylinder but rather unsure, looking advice before taking it to the garage on Wednesday so i can possibly cost the issue so i know im not getting ripped off!

My car is A Aveo 2009 (15,000 miles on the clock and im the second owner)

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