Pain at the pump as petrol, diesel jump 30c a litre in three weeks

New Zealand motorists are facing significant fuel price increases, with petrol and diesel costs rising by nearly 30 cents per litre in September. Industry experts attribute the surge to global supply chain volatility and ongoing conflicts in the Middle East.
Why it matters
Rising fuel costs impact inflation and consumer spending power, creating economic pressure on households and essential freight services.
Kiwi motorists are being hit with another sharp rise at the pump, with petrol and diesel jumping nearly 30 cents a litre since the start of September as <a href="https://www.1news.co.nz/2026/09/14/fuel-prices-tipped-to-keep-rising-as-conflicts-squeeze-global-supply/">renewed turmoil in the Middle East</a> threatens any prospect of quick relief. The national average for 91 and diesel have jumped to $3.30 and $3.04 respectively in the past 28 days. Waitomo chief executive Simon Parham said volatility had returned since the start of August, adding about 25 cents a litre to 91 and 35 cents to diesel. "It's pushing us to and above that $3 mark, which is a real mental barrier. Above $3 we start to see demand destruction and volume does soften a bit." Drivers were stretching every dollar and changing how they shopped, he said.
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