Feature article
The Kiwi Guide to Saving at the Pump: How to Find the Cheapest Fuel in NZ
Use digital tools like Gaspy to find real-time low prices & maximise savings by stacking loyalty discounts and vouchers.
7 November 2025
With the challenging cost of living a constant pressure point for Kiwi households, finding the cheapest petrol can make a significant difference to the weekly budget. Fortunately, in New Zealand, you don't have to drive around to compare prices - there are dedicated tools and strategies to help you fill up without the financial ouch.
The Essentials: Comparison Tools
The single most effective tool for finding cheap fuel in New Zealand is the Gaspy app (free for both iOS and Android).
Gaspy operates on a crowd-sourced model, meaning its prices are updated by a community of "Gas Spies".
Real-Time Price Map: shows you an interactive map of stations in your current area with their latest reported prices.
While Gaspy is the most popular, other resources can provide useful regional insights:
PriceWatch: Run by CardLink, this website provides a national snapshot of fuel transaction prices. While the data may be at least 24 hours old, it's a good tool for spotting regional trends and average pricing
But also!
Loyalty programs can be game changers.
| Strategy | Details | ||
|---|---|---|---|
| Loyalty Cards | Loyalty Cards | Always carry and swipe your loyalty cards (like AA Smartfuel/BP and Mobil Smiles). The standard 6c/L discount is minimal, but the real benefit is the discount stacking for greater savings events | Always carry and swipe your loyalty cards (like AA Smartfuel/BP and Mobil Smiles). The standard 6c/L discount is minimal, but the real benefit is the discount stacking for greater savings events |
| Supermarket Vouchers | Supermarket Vouchers | Vouchers earned at supermarkets (Countdown/BP and New World/Z) can often be combined with your existing loyalty discount, sometimes leading to savings of 20c/L or more on a single fill | Vouchers earned at supermarkets (Countdown/BP and New World/Z) can often be combined with your existing loyalty discount, sometimes leading to savings of 20c/L or more on a single fill |
| Discount Days | Discount Days | Major independent fuel companies, particularly Gull, are famous for their sudden, large "Discount Days" which drop prices across all their stations nationally for a few hours. Gaspy will often alert you to these events! | Major independent fuel companies, particularly Gull, are famous for their sudden, large "Discount Days" which drop prices across all their stations nationally for a few hours. Gaspy will often alert you to these events! |
| Z Sharetank | Z Sharetank | The Z App's Sharetank feature allows you to pre-purchase fuel (up to 1,000 litres) at the cheapest Z price within a 30km radius and redeem it later at any Z station nationwide… perfect for capitalising on price dips | The Z App's Sharetank feature allows you to pre-purchase fuel (up to 1,000 litres) at the cheapest Z price within a 30km radius and redeem it later at any Z station nationwide… perfect for capitalising on price dips |
By embracing digital tools like Gaspy to find real-time low prices, maximizing the savings from loyalty programs and supermarket vouchers, and staying aware of the broader price trends (as shown in the graph), you can actively fight the pinch at the pump.
Making smart decisions before you start the engine is the best way to keep more of your money where it belongs - in your pocket.
Disclaimer Regarding Third-Party Services
The tools, apps (such as Gaspy), and fuel company promotions (such as Gull Discount Days and Z Sharetank) mentioned in this guide are provided for informational purposes only. Trade Me does not operate, or guarantee the accuracy, security, or reliability of any third-party app or website listed.
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