Smokes are taxed to the point of something like 56 cents of every dollar cigarette is tax and it goes up twice a year.
Petrol is the same but different. It cops two different taxes and both are indexed so they go up with the wholesale price.
Gas is a different kettle of horse shit, we export that to Singapore and then buy it back at a dearer price.
I can't be fucked doing the imperial conversation but standard fuel here is about $1.50 per litre and diesel and premium (higher octane) fuels are a about 10 cents per litre dearer. It does drop in some states to around $1.30 but I haven't seen diesel prices around here drop from $1.50 for about 5 years.