Tauranga motorists could save as much as 9 cents per litre by shopping around and pumping their own petrol.
The saving equates to about $3.60 for 40 litres of fuel.
But a price comparison website shows residents are missing out on the country's cheapest petrol.
In Tauranga, the cheapest priceof $2.029 per litre (for 91 octane petrol) was found at the self-service Gull station in Whakamarama, city drivers could find fuel almost as cheap ($2.039) at the self-service Gull station in Merivale.
Waimapu Garage on Oropi Road sells Regular 91 for $2.069 per litlre and they pump the petrol for their customers.
Gull has announched today that they have dropped their prices for a second time this week. This means that prices at Gull's unmanned sites have dipped below the $2.00 a litre price point.
Two men seen filling up at the Merivale station yesterday afternoon said they specifically came to the station because it was the "cheapest in town". However fuel was much cheaper in Rotorua, the men said.
A Caltex station within 5km of the Merivale station was selling 91 octane yesterday for a posted price of $2.119 per litre, while most stations in Tauranga had an average price of $2.088 per litre.
