Petrol prices in SY20
Every forecourt in the SY20, Shrewsbury postcode district, cheapest first, with live prices from the government Fuel Finder feed — covering Gwynedd, Wales.
SY20 has only 2 forecourts, so there is no comparison to make within the district itself. The SY area page covers the surrounding districts, which is where a cheaper option would be.
Petrol stations in SY20 (2)
Cheapest first. Prices update through the day.
Mallwyd Service Station, MACHYNLLETHCheapestMACHYNLLETH£1.62E10£1.82B7TEXACO, MACHYNLLETHMACHYNLLETH£1.65E10£1.87B73.0p separates the cheapest and dearest forecourt inside SY20 alone — £1.65 on a tank, without leaving the district. That is usually a bigger saving than any amount of waiting for prices to move.
Is anywhere nearby cheaper?
Neighbouring districts, with the fuel the drive itself burns already subtracted — a 45 mpg car, there and back.
Not today. Of the 8 nearest districts, none is cheap enough to cover the fuel the drive itself would burn — the £1.62already available inside SY20 wins. That is the common case, and it is why chasing a cheaper sign a few miles away usually costs more than it saves — the break-even calculation shows where the line falls.
Nearby postcode districts
Closest first, with today’s typical price.
About fuel prices in SY20
SY20 is part of the SY postcode area, which covers Shrewsbury, and its forecourts sit mainly in Gwynedd in Wales. We track 2 forecourts here across 2 brands.
There is no supermarket forecourt in SY20, which usually shows in the price: supermarket sites anchor local competition, and districts without one tend to run dearer than neighbours that have one. Across Wales as a whole the median is £1.65 — see the whole region.
Every price here comes from the government Fuel Finder scheme, which since February 2026 has required each forecourt to report a change within thirty minutes. For the forecourts nearest a specific address rather than a whole district, search your full postcode.
Common questions about SY20
How much is petrol in SY20 today?
The typical SY20 forecourt is charging £1.63 a litre for E10 petrol — £89.87 for a 55-litre tank. The cheapest of the 2 forecourts reporting a price in SY20 is at £1.62, and the dearest £1.65.
Where is the cheapest petrol in SY20?
Mallwyd Service Station, MACHYNLLETH in MACHYNLLETH at £1.62 a litre. That is 3.0p below the dearest forecourt in SY20. Prices change through the day, so check before you set off.
Is SY20 cheaper or dearer than the rest of the UK?
SY20 runs 1.5p below the UK median of £1.65, and sits in Wales, where the regional median is £1.65. Local competition drives most of that: districts with two or more supermarket forecourts close together price lower than districts where the nearest alternative is a drive away.
Is it worth driving to a cheaper postcode from SY20?
Not on today's prices. No neighbouring district is cheap enough to cover the fuel the detour itself would burn, so the best price available to you is inside SY20.
How many petrol stations are there in SY20?
2 forecourts, from 2 different brands. Every one reports its prices to the government Fuel Finder scheme within thirty minutes of a change.