The cost of filling the tank in April surged by margins New Zealand has never recorded before, with Statistics New Zealand confirming on Friday that petrol prices climbed 12.6 percent in the single month to April and diesel prices leapt 36.6 percent over the same period. The figures, drawn from the latest monthly Selected Price Indexes, leave no room for doubt that the closure of the Strait of Hormuz and the wider Middle East conflict have rewritten the recent history of pump prices in this country.
Across the two months from February to April, petrol prices have risen 33.6 percent and diesel prices have risen a staggering 94.9 percent, almost a doubling. The annual numbers are nearly as severe, with petrol up 30.1 percent and diesel up 91.3 percent over the year to April. The world oil benchmark Brent Crude has averaged more than US$170 a barrel since the conflict began, and futures pricing assumed by the Reserve Bank only sees Dubai crude slipping below US$100 by the end of June.
Statistics NZ prices and deflators spokesperson Nicola Growden said the data captures the speed of the disruption rather than its full ongoing impact. “In the two months since February 2026, petrol has increased 33.6 percent and diesel has increased 94.9 percent,” she said in comments to RNZ. The Selected Price Indexes survey covers about 47 percent of the items in the quarterly Consumers Price Index, so the figures back economist forecasts of an inflation spike in the June quarter.
Infometrics chief executive Brad Olsen described the rises as “off the scale”, telling RNZ’s Midday Report that “for the likes of diesel you’ve never seen anything like it, even for petrol things are bigger than they’ve ever been”. Olsen said the speed of the surge had caught firms unprepared and left households scrambling to rework their budgets. “What do you plan for, because that uncertainty in the market, and how quickly those prices have shot up are a real concern,” he said.
The human cost is already visible. Waikato student nurse and mother of four Poihaere Whare told RNZ that financial pressure was hitting students across the country. “We have to do what we do to get by and that’s including the bare necessities like food. I haven’t had fresh fruit and vegetables for a wee while. I always put myself last.” She said many students had been forced into Afterpay debt to cope, and that she tried to time her fills for the cheapest windows but did not always have that luxury.
Electricity prices added to the squeeze, climbing 2.3 percent for the month and 13.1 percent over the year. Growden noted that electricity prices have now risen every single month since December 2024, an unbroken sequence of eighteen monthly increases. Gas prices were up 10.8 percent for the year. Domestic airfares rose 4.2 percent in April and international airfares rose 6.2 percent, although both measures remain below their levels of a year ago by roughly seven percent, partly because airline pricing locks in up to 12 months ahead.
Set against the energy storm, food prices offered a brief reprieve. The food price index was flat between March and April, and the annual food inflation rate slowed to 2.6 percent, the lowest reading since February 2025. Cheaper fruit and vegetables led by kiwifruit and apples offset higher prices for avocados, meat pies and chocolate blocks, while legs of lamb dropped in price. The meat, poultry and fish group was still the biggest annual contributor to food inflation, rising 7.8 percent, with porterhouse and sirloin steak, beef mince, takeaway coffee and white bread all leading the rise.
ASB senior economist Mark Smith said the monthly numbers translated to roughly a 1.3 percent inflation spike for the survey, although consumer caution had taken some heat out of the underlying readings. “What appears to be apparent, however, is that consumer caution and the subdued demand backdrop is having more of a moderating impact on inflation,” Smith said. He is forecasting annual inflation to hit 4.3 percent in the June quarter, up from 3.1 percent in the March quarter, which already sits outside the Reserve Bank’s 1 to 3 percent target band.
Smith and several other bank economists now treat further hikes in the Official Cash Rate as a certainty. ASB expects the Reserve Bank to begin tightening from July in 25 basis point increments and to finish the year with the OCR at 3.25 percent, up from 2.25 percent today. “The timing is tricky, and the case can be made for an earlier May or later September start to OCR hikes,” Smith said. Interest.co.nz reported that wholesale money markets are now fully pricing two hikes by September.
The fuel shock is feeding through to the wider economy faster than many expected. The BNZ-BusinessNZ Performance of Manufacturing Index for April came in at just 50.5, barely above the break-even line of 50 and down sharply from 52.8 in March and 54.6 in February. BNZ head of research Stephen Toplis said the survey suggested “the wheels started to fall off” in April. BusinessNZ director of advocacy Catherine Beard said 63.6 percent of respondents pointed to negative influences on their business performance, with comments dominated by freight costs, fuel costs and disrupted deliveries of raw materials tied to the war.
The fuel shock has also forced visible operational decisions across the economy. Air New Zealand has warned of a full-year loss of up to $390 million and is cutting around five percent of its flights, while The Warehouse Group has blamed a flat quarter on the same fuel-driven slowdown in household spending. For ordinary households, the figures released on Friday confirm what every motorist has already felt at the pump and every renter has felt in the power bill. Fuel and electricity, the two pillars of weekly cash flow, are now rising faster than wages, faster than rents and faster than the Reserve Bank can comfortably look past.
What’s it costing you to fill the tank or pay the power bill this month? Have you cut back on driving, switched to public transport or rearranged the family budget to cope? Tell us what you are seeing in the comments below.
See also New Zealand’s Fuel Situation — Newswire’s live tracker of petrol and diesel prices, stocks and the Middle East supply chain.
This article was written by AI, briefed to report the facts, hopefully without some of the bias people bring to the job 🙂
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