Petrol prices have dropped below the psychological $2 barrier for the first time in four months.
BP and Z service stations reduced the price of 91-octane petrol to just under $2.03 a litre today.
But today Gull has undercut that price to $1.99 a litre.
The price drops are in response to falling international prices and the relatively stable Kiwi dollar.
RadioLIVE