Weekly bulletin, 28 September to 4 October 2026. Published Monday 5 October 2026.
Petrol prices in Portsmouth: up 0.6p this week to 175.1p
Between Monday 28 September 2026 and Sunday 4 October 2026, the average price of unleaded across 11 filling stations in Portsmouth rose 0.6p to 175.1p a litre, while diesel rose 0.9p to 200.0p.
Cheapest and most expensive
On Sunday 4 October 2026, prices updated within 30 days, judged against their neighbours.
The last 30 days
Daily averages, in pence per litre. Right-click the image to save it; it is free to publish with a link.
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The weekly change compares the same 10 filling stations with an unleaded price on both days, so a station dropping out of the figures does not move it.
10 of the 13 stations seen during the week changed at least one price.
The cheapest unleaded in Portsmouth on Sunday 4 October 2026 was 172.9p at All Saints Service Station, Portsmouth (PO1 4BU); the most expensive was 176.9p at Mfg North End, Portsmouth (PO2 7DZ), a gap of 4.0p, or £2.00 on a 50-litre tank.
The cheapest diesel was 197.9p at Sainsburys Farlington, Portsmouth (PO6 1RR).
Across the UK, unleaded was up 0.7p over the same week, at 174.7p, which puts Portsmouth 0.4p above the national average.
"Drivers in Portsmouth paid 0.6p more for a litre of unleaded this week. On a 50-litre tank, that is £0.30 more than a week earlier. The gap between the cheapest and the dearest forecourt in Portsmouth is 4.0p, so where you fill up still matters more than when." said Jacky A., editor of fuelpricetoday.co.uk.
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Petrol prices in Portsmouth: up 0.6p this week to 175.1p Between Monday 28 September 2026 and Sunday 4 October 2026, the average price of unleaded across 11 filling stations in Portsmouth rose 0.6p to 175.1p a litre, while diesel rose 0.9p to 200.0p. The weekly change compares the same 10 filling stations with an unleaded price on both days, so a station dropping out of the figures does not move it. 10 of the 13 stations seen during the week changed at least one price. The cheapest unleaded in Portsmouth on Sunday 4 October 2026 was 172.9p at All Saints Service Station, Portsmouth (PO1 4BU); the most expensive was 176.9p at Mfg North End, Portsmouth (PO2 7DZ), a gap of 4.0p, or £2.00 on a 50-litre tank. The cheapest diesel was 197.9p at Sainsburys Farlington, Portsmouth (PO6 1RR). Across the UK, unleaded was up 0.7p over the same week, at 174.7p, which puts Portsmouth 0.4p above the national average. "Drivers in Portsmouth paid 0.6p more for a litre of unleaded this week. On a 50-litre tank, that is £0.30 more than a week earlier. The gap between the cheapest and the dearest forecourt in Portsmouth is 4.0p, so where you fill up still matters more than when." said Jacky A., editor of fuelpricetoday.co.uk. Source: fuelpricetoday.co.uk, weekly bulletin for Portsmouth, 28 September to 4 October 2026. https://fuelpricetoday.co.uk/press/2026-W40/town-portsmouth Prices are pence per litre, computed from the government's Fuel Finder open data. Free to use with a link to the source.
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- Every station (CSV)
Name, brand, postcode, coordinates, unleaded and diesel on 28 Sep and 4 Oct.
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All the figures on this page, with the 30-day series.
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Terms of use
Free to use, quote and publish, including the chart and the data, with a link to https://fuelpricetoday.co.uk/press/2026-W40/town-portsmouth or a credit to fuelpricetoday.co.uk. Prices are computed from the Fuel Finder open data published by the Department for Energy Security and Net Zero under the Open Government Licence v3.0. Questions, a figure for another area, or a quote: contact@fuelpricetoday.co.uk.
How the figures are computed
Each average is the mean of the prices changed in the last 7 days at the filling stations of Portsmouth, motorway services left out and prices more than 25p from the day's median discarded. The cheapest and most expensive stations are judged against the stations within 10 km, so that a typing error cannot top the list. The week runs from Monday to Sunday. Details on how this site works.