Fuel Prices in Portsmouth
Live petrol and diesel prices across Portsmouth and Hampshire — cheapest stations first.
Portsmouth drivers can pay very different prices for the same litre of fuel depending on which forecourt they pick. The spread between the cheapest and most expensive station in the PO postcode area regularly tops 10p per litre.
fuelfinder.ai lists every Portsmouth station that reports to the UK Government's CMA Pump Watch open-data feed. Search your postcode and you'll see live petrol and diesel prices ranked from cheapest, with how recently each was updated.
Whether you live in Portsmouth or commute in from Southsea, Havant, or Fareham, a quick check before you fill up is the simplest way to keep your fuel bill down.
How It Works
- Step 1: Enter a Portsmouth postcode — Type any PO postcode or nearby area code.
- Step 2: Compare every station — Live petrol and diesel prices, sorted cheapest first.
- Step 3: Save at the pump — Drive to the cheapest station and save on every fill.
Why Drivers Use fuelfinder.ai
- Hampshire coverage — Portsmouth plus surrounding towns including Southsea, Havant, Fareham.
- Official CMA data — Same prices the UK Government publishes. Refreshed twice daily.
- Always free — No login, no app, no cost.
- Built for mobile — Check prices on your phone before you leave the driveway.
Frequently Asked Questions
Where is the cheapest petrol in Portsmouth?
Supermarket forecourts (Asda, Tesco, Sainsbury's, Morrisons) and Costco where present typically offer the cheapest fuel in Portsmouth. The exact ranking changes daily — use fuelfinder.ai with your postcode for today's cheapest.
How often do Portsmouth fuel prices change?
Most Portsmouth stations adjust prices several times a week. Supermarket forecourts can change daily based on wholesale costs. fuelfinder.ai refreshes from the CMA feed twice daily.
Is diesel more expensive than petrol in Portsmouth?
Diesel typically runs 4–8p per litre above petrol in the PO area, in line with the UK national gap. The exact spread varies by station and brand.
How many fuel stations does fuelfinder.ai cover in Portsmouth?
Every Portsmouth forecourt that reports to the UK Government CMA Pump Watch scheme. Coverage grows as more retailers join the scheme.