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Diesel prices in St Mary's

Compare current diesel (B7) across 1 St Mary's forecourts. Check the lowest listed price, local average and map before choosing where to fill up.

Lowest listed diesel forecourt in St Mary's

223p/l

Lowest listed diesel price in St Mary's

Island Carriers<0.1 mi from St Mary's centre
DirectionsStation details
Diesel local average
223p/l
Local forecourts
1
UK comparison
Above

View station

Live local prices

Current diesel prices in St Mary's

1 current diesel (B7) prices from 1 St Mary's forecourts listed as stocking diesel.

Prices checked 20 Oct 2026, 08:50. Individual rows show when that forecourt price was reported.

Current diesel prices in St Mary's. Ranked by Diesel (B7) price.
ForecourtPostcode and reportDiesel(B7), selected rankingDistancefrom Isles Of Scilly centreOpening timesActions
1Island CarriersIndependent forecourtTR21 0JYReported 19 Sept 2026, 16:36223pCheapestDistance: <0.1 miHours vary by dayMonday: 08:00 - 17:00; Tuesday: 08:00 - 17:00; Wednesday: 08:00 - 17:00; Thursday: 08:00 - 17:00; Friday: 08:00 - 17:00; Saturday: 08:00 - 17:00; Sunday: 00:00 - 00:00; Bank holidays: 08:00 - 17:00Details

How to read this page

About diesel prices in St Mary's

Coverage, freshness and comparison scope matter as much as the headline price.

St Mary's has 1 forecourts listed as stocking diesel (B7), with current prices available from 1. The table ranks forecourts by current diesel (B7) price, with distance and station name used to order equal or unavailable prices. Station status, distance and update freshness remain visible for comparison.

This page focuses on Diesel (B7) using official UK Fuel Finder data, local averages, regional benchmarks and UK average comparisons where coverage is available.

Thirty-day evidence

Thirty-day diesel (B7) price trend

Thirty-day diesel (B7) trends, local comparisons and potential savings from official UK Fuel Finder data.

224p210p195p
  • 20 September 2026: local 223: region 196.9: UK 196.3
  • 21 September 2026: local 223: region 197.5: UK 196.9
  • 22 September 2026: local 223: region 198: UK 197.3
  • 23 September 2026: local 223: region 198.4: UK 197.7
  • 24 September 2026: local 223: region 199: UK 198.3
  • 25 September 2026: local 223: region 199.5: UK 198.8
  • 26 September 2026: local 223: region 199.7: UK 199.1
  • 27 September 2026: local 223: region 199.8: UK 199.2
  • 28 September 2026: local 223: region 200.3: UK 199.6
  • 29 September 2026: local 223: region 200.5: UK 199.8
  • 30 September 2026: local 223: region 200.6: UK 199.8
  • 1 October 2026: local 223: region 200.6: UK 199.8
  • 2 October 2026: local 223: region 200.7: UK 199.9
  • 3 October 2026: local 223: region 200.8: UK 200
  • 4 October 2026: local 223: region 200.7: UK 200
  • 5 October 2026: local 223: region 200.7: UK 200
  • 6 October 2026: local 223: region 200.7: UK 199.9
  • 7 October 2026: local 223: region 200.6: UK 199.8
  • 8 October 2026: local 223: region 200.5: UK 199.7
  • 9 October 2026: local 223: region 200.5: UK 199.7
  • 10 October 2026: local 223: region 200.5: UK 199.7
  • 11 October 2026: local 223: region 200.5: UK 199.7
  • 12 October 2026: local 223: region 200.4: UK 199.6
  • 13 October 2026: local 223: region 200.2: UK 199.4
  • 14 October 2026: local 223: region 200.1: UK 199.3
  • 15 October 2026: local 223: region 200: UK 199.2
  • 16 October 2026: local 223: region 200: UK 199.1
  • 17 October 2026: local 223: region 200: UK 199.1
  • 18 October 2026: local 223: region 200: UK 199.1
  • 19 October 2026: local 223: region 200: UK 199.1

Average price

223p/l

20 Sept to 19 Oct

30-day low
223p/l
30-day high
223p/l
Movement (30 days)
0p/l
Volatility
Low
Jerry holding a light bulb and presenting a fuel-price insight

Jerry's diesel trend read

Diesel in St Mary's ended the period broadly where it started, moving from 223p/l on 20 September to 223p/l on 19 October. The latest 7 days were steadier, with the average little changed since 12 October. St Mary's's current average is 23.9p/l above the UK average. Daily movement volatility is low.

Consistency, not just today's lowest

A consistently competitive diesel forecourt

This recommendation requires at least 21 completed reporting days and a current price no higher than the local average.

Island Carriers

223p/l today

Matches St Mary's average today

Near cheapest
Within 1p on 30 of 30 days
Daily cheapest
Cheapest on 30 of 30 days
Average gap
0p/l average gap
Evidence
30 of 30 days reported
DirectionsStation details

Island Carriers stayed within 1p/l of the daily cheapest diesel price on 30 of 30 reported days, averaging 0p/l above the daily cheapest price.

Price choice

Potential diesel savings

Cheapest versus average is the practical comparison. Cheapest versus highest is the maximum listed difference, not a guaranteed saving.

Current local price range

0p/l

223p/l cheapest, 223p/l highest

Cheapest versus local average
£0.00 less than the local average on a 55-litre fill
Cheapest versus highest
£0.00 maximum listed difference on a 55-litre fill

Comparing current diesel prices in St Mary's can avoid paying up to 0p/l more than the cheapest listed price.

Diesel (B7) compared with nearby locations

Ranked by current average diesel price. St Mary's is highlighted so the local baseline remains easy to find.

  1. 1Penzance37.5 mi, 5 reporting195.1pAverage-27.9p/lCheapest 175.9p
  2. 2Helston48.8 mi, 6 reporting199.2pAverage-23.8p/lCheapest 198.9p
  3. 3Redruth52.7 mi, 7 reporting200.2pAverage-22.8p/lCheapest 198.9p
  4. 4Hayle44.2 mi, 5 reporting200.7pAverage-22.3p/lCheapest 199.7p
  5. 5Penryn55.2 mi, 4 reporting201.7pAverage-21.3p/lCheapest 199.7p
  6. 6St Mary'sHereCurrent location, 1 reporting223pAverageBaselineCheapest 223p

Penzance has the lowest nearby average shown at 195.1p; it is 27.9p/l cheaper than St Mary's.

Local market evidence

Diesel market in this location

Distribution, station consistency and forecourt type provide different evidence. None is treated as a guarantee of the next pump price.

Price distribution

223p/l1 stations

All reporting diesel forecourts in St Mary's currently list the same price.

Cheapest station consistency

  1. 1Island Carriers30 days

Supermarkets and other forecourts

Supermarkets
No price
Major brands
No price
Independent forecourts
223p/l
Named local evidence: Independent forecourts.

Where value persists

Diesel brand reliability over 30 days

Historical claims render only when the documented reporting thresholds are met.

No brand has at least two St Mary's forecourts and 14 days of diesel evidence for a reliable 30-day comparison.

Areas with the cheapest diesel in St Mary's

  1. 1Old Town1 reporting, 0 below average223p/l

Good to know

Fuel price FAQs for St Mary's

Use the current local evidence to choose a forecourt, compare nearby places and understand how coverage and freshness affect the figures.

Where is the cheapest diesel (B7) in St Mary's today?
The cheapest listed diesel (B7) price in St Mary's is 223p/l at Island Carriers. Check the table before travelling because distance, opening status and recent updates can affect the best choice.
How are St Mary's diesel (B7) forecourts ranked?
Forecourts are ranked by their current diesel (B7) price first. If prices are tied or unavailable, the table uses distance and station name. Use the forecourt comparison to sort and inspect the current results.
Are diesel (B7) prices in St Mary's below the UK average?
Diesel is above the UK average by 23.9p/l. These comparisons use current location averages and the latest benchmark data available to the page.
How recent are the St Mary's fuel prices on this page?
Prices checked 20 Oct 2026, 08:50. Individual prices can remain unchanged between checks until a retailer reports a price change.
Why do some St Mary's forecourts not show a current diesel (B7) price?
A forecourt can be listed when it is known to stock diesel (B7), even if there is not a current reported price available for that fuel. The price table keeps those stations visible but prioritises forecourts with current prices.
Should I compare nearby locations before filling up in St Mary's?
Nearby comparisons currently show Penzance at 195.1p/l, 27.9p/l cheaper than St Mary's, Hayle at 200.7p/l, 22.3p/l cheaper than St Mary's and Helston at 199.2p/l, 23.8p/l cheaper than St Mary's. Compare Penzance, Hayle, Helston and Redruth.
How can I compare fuel prices around my current location?
Use cheapest diesel near me for a distance-led comparison based on your current position.

Built on real fuel-price data

Prices are sourced from the UK Government Fuel Finder scheme. Prices checked 20 Oct 2026, 08:50. See how we qualify and compare prices

Retailer reporting target
30 minutes