Fuel Price Check Analysis – Week of March 31, 2026 Petrol (E10) 155.4p 2.7% (+4.1p) 7d avg: 153.5p Hold off if you can | Super Unleaded (E5) 172.8p 2.6% (+4.4p) 7d avg: 170.8p Hold off if you can | Diesel (B7) 186.9p 3.8% (+6.9p) 7d avg: 183.9p Hold off if you can | Super Diesel (SDV) 204.4p 2.9% (+5.8p) 7d avg: 201.7p Hold off if you can |
Fuel Price Check Analysis – Week of March 31, 2026 Petrol (E10) 155.4p 2.7% (+4.1p) 7d avg: 153.5p Hold off if you can | Super Unleaded (E5) 172.8p 2.6% (+4.4p) 7d avg: 170.8p Hold off if you can | Diesel (B7) 186.9p 3.8% (+6.9p) 7d avg: 183.9p Hold off if you can | Super Diesel (SDV) 204.4p 2.9% (+5.8p) 7d avg: 201.7p Hold off if you can |

Today’s Cheapest Petrol and Diesel in Clase, Cwmrhydyceirw, Clydach, Morriston, Plasmarl, Plasmarl Industrial Estate, Swansea Enterprise Park, Ynystawe, Ynysforgan: The Full Report

A comprehensive breakdown of fuel prices in the Clase, Cwmrhydyceirw, Clydach, Morriston, Plasmarl, Plasmarl Industrial Estate, Swansea Enterprise Park, Ynystawe, Ynysforgan area. We analyze the market data to help you save on your next fill-up.

Jonathan Mathews
Jonathan Mathews
Automotive Data Analyst
10+ years automotive industry
Last Updated Saturday, 4th April 2026 at 11:15
23
Local Stations
55
Brands (SA Area)
31.0p
Max Price Gap
#7
UK Ranking REGION
Key Takeaways
  • Cheapest petrol: 126.9p at Old Pump Filling Station
  • Potential savings: Up to £17.05 per tank
  • 157 stations tracked across 55 brands

Motorists in Clase, Cwmrhydyceirw, Clydach, Morriston, Plasmarl, Plasmarl Industrial Estate, Swansea Enterprise Park, Ynystawe, Ynysforgan are currently enjoying some of the lowest fuel prices in the UK, ranking in the top 6% nationally. Over the past week, E10 petrol prices in SA have Increased 4.2p (2.8%)

According to our latest data feed from the Competition and Markets Authority (CMA), selecting the right forecourt in Clase, Cwmrhydyceirw, Clydach, Morriston, Plasmarl, Plasmarl Industrial Estate, Swansea Enterprise Park, Ynystawe, Ynysforgan could save you up to 31.0p per litre. For an average 55-litre family car, that's a saving of over £17.05 on a single tank.

Market Competition: Moderate competition

Competition Level: High

Clase, Cwmrhydyceirw, Clydach, Morriston, Plasmarl, Plasmarl Industrial Estate, Swansea Enterprise Park, Ynystawe, Ynysforgan has 157 active fuel stations across 55 different brands, with a brand diversity index of 0.35 - indicating healthy market competition.

The price spread between cheapest and average stations is 26.1p, revealing significant price differences - shop around to save!

Today's Best Value

Cheapest E10 Petrol in Swansea, Clase, Cwmrhydyceirw, Clydach, Morriston, Plasmarl, Plasmarl Industrial Estate, Swansea Enterprise Park, Ynystawe, Ynysforgan:
126.9p at Old Pump Filling Station, POST OFFICE, PENTLEPOIR, SAUNDERSFOOT, SA69 9BJ, SAUNDERSFOOT, Wales

Cheapest B7 Diesel in Swansea, Clase, Cwmrhydyceirw, Clydach, Morriston, Plasmarl, Plasmarl Industrial Estate, Swansea Enterprise Park, Ynystawe, Ynysforgan:
138.9p at Old Pump Filling Station, POST OFFICE, PENTLEPOIR, SAUNDERSFOOT, SA69 9BJ, SAUNDERSFOOT, Wales

Surprisingly, an independent or branded station (Old Pump Filling Station) has beaten the supermarkets to the top spot today.

Fuel Type Availability

E10
Unleaded (E10)
Widely available
152 / 157 Stations (96.8%)
E5
Super Unleaded (E5)
Moderate availability
89 / 157 Stations (56.7%)
B7
Diesel (B7)
Widely available
150 / 157 Stations (95.5%)
SDV
Premium Diesel
Moderate availability
48 / 157 Stations (30.6%)

Top 10 cheapest petrol stations (E10)

Here is the verified list of the most affordable places to buy standard Unleaded petrol in Clase, Cwmrhydyceirw, Clydach, Morriston, Plasmarl, Plasmarl Industrial Estate, Swansea Enterprise Park, Ynystawe, Ynysforgan today.

PETROL LEADERBOARD Live Data
1
Old Pump Filling Station
POST OFFICE, PENTLEPOIR, SAUNDERSFOOT, SA69 9BJ, SAUNDERSFOOT, Wales , SA69 9BJ
126.9p
BEST PRICE
2
Texaco
Haverfordwest Road,St Davids,Haverfordwes   , SA62 6QN
136.9p
+10.0p
3
Murco
PENYDRE GARAGE, HIGH STREET, FISHGUARD, SA65 9AT, FISHGUARD, Wales , SA65 9AT
141.9p
+15.0p
4
ASDA
UPPER FOREST WAY, SWANSEA, SWANSEA, WALES , SA6 8PS
149.7p
+22.8p
5
SHELL
CROSSROADS GARAGE, BEGELI, CILGETI, SA68 0YH, CILGETI, W , SA68 0YH
149.9p
+23.0p
6
murco
ABSALOMS, CENTRAL GARAGE, MAENCLOCHOG, CLYNDERWEN, SA66 7LA, CLYNDERWEN, Wales , SA66 7LA
150.9p
+24.0p
7
ESSAR
B4314, NARBERTH, PEMBROKESHIRE, WALES , SA67 8EN
151.7p
+24.8p
8
EG ON THE MOVE
NEATH ROAD, MORRISTON, SWANSEA, SWANSEA, UNITED KINGDOM , SA6 8EF
151.9p
+25.0p
9
TEXACO
EASTGATE GARAGE, JESSE ROAD, ARBERTH, SA67 7DJ, ARBERTH, Wales , SA67 7DJ
151.9p
+25.0p
10
ESSO
TYSSUL VILLA, EFAILWEN, CLYNDERWEN, SA66 7XB, CLYNDERWEN, Wales , SA66 7XB
152.9p
+26.0p

Top 10 cheapest diesel stations (B7)

For diesel drivers, the price variance can often be even higher. The following stations are currently offering the best value for B7 Diesel in the Clase, Cwmrhydyceirw, Clydach, Morriston, Plasmarl, Plasmarl Industrial Estate, Swansea Enterprise Park, Ynystawe, Ynysforgan area.

DIESEL LEADERBOARD Live Data
1
Old Pump Filling Station
POST OFFICE, PENTLEPOIR, SAUNDERSFOOT, SA69 9BJ, SAUNDERSFOOT, Wales , SA69 9BJ
138.9p
BEST PRICE
2
Texaco
Haverfordwest Road,St Davids,Haverfordwes   , SA62 6QN
157.9p
+19.0p
3
Murco
PENYDRE GARAGE, HIGH STREET, FISHGUARD, SA65 9AT, FISHGUARD, Wales , SA65 9AT
163.9p
+25.0p
4
ASDA
UPPER FOREST WAY, SWANSEA, SWANSEA, WALES , SA6 8PS
176.7p
+37.8p
5
ESSAR
B4314, NARBERTH, PEMBROKESHIRE, WALES , SA67 8EN
181.7p
+42.8p
6
EG ON THE MOVE
NEATH ROAD, MORRISTON, SWANSEA, SWANSEA, UNITED KINGDOM , SA6 8EF
181.9p
+43.0p
7
murco
ABSALOMS, CENTRAL GARAGE, MAENCLOCHOG, CLYNDERWEN, SA66 7LA, CLYNDERWEN, Wales , SA66 7LA
181.9p
+43.0p
8
SHELL
CROSSROADS GARAGE, BEGELI, CILGETI, SA68 0YH, CILGETI, W , SA68 0YH
183.9p
+45.0p
9
TEXACO
EASTGATE GARAGE, JESSE ROAD, ARBERTH, SA67 7DJ, ARBERTH, Wales , SA67 7DJ
183.9p
+45.0p
10
L G Eynon & Sons
L G EYNON & SONS, MAENCLOCHOG, CLUNDERWEN, SA66 7LB, CLUNDERWEN, Wales , SA66 7LB
183.9p
+45.0p

How to save on fuel in Clase, Cwmrhydyceirw, Clydach, Morriston, Plasmarl, Plasmarl Industrial Estate, Swansea Enterprise Park, Ynystawe, Ynysforgan

While choosing the cheapest station is the easiest way to save, changing your driving habits can also make a significant difference to your monthly spend.

Drive Smoothly

Aggressive acceleration and heavy braking can increase fuel consumption by up to 40% in stop-and-go traffic around Clase, Cwmrhydyceirw, Clydach, Morriston, Plasmarl, Plasmarl Industrial Estate, Swansea Enterprise Park, Ynystawe, Ynysforgan.

Reduce Weight

Carrying an extra 50kg in your boot increases fuel consumption by 1-2%. Clear out unnecessary items.

Market Analyst Commentary
CFP Research Team

"Clase, Cwmrhydyceirw, Clydach, Morriston, Plasmarl, Plasmarl Industrial Estate, Swansea Enterprise Park, Ynystawe, Ynysforgan benefits from strong market competition with 55 brands operating across 157 stations. Prices have climbed 4.2p this week, so filling up sooner rather than later is advisable, while ranking in the top 6% nationally makes this an excellent area for fuel savings."

For more detailed savings, explore our Interactive Fuel Map to scan the entire region visually.

Frequently Asked Questions

As of April 4, 2026, the cheapest station is Old Pump Filling Station at 126.9p per litre.

There is currently a 31.0p difference between the cheapest and most expensive stations in Clase, Cwmrhydyceirw, Clydach, Morriston, Plasmarl, Plasmarl Industrial Estate, Swansea Enterprise Park, Ynystawe, Ynysforgan. For a standard family car, this equals a saving of £17.05 per tank.

Not currently. An independent or oil-company brand (Old Pump Filling Station) is actually cheaper than the local supermarkets today.

Our Analysis Methodology

Data Collection
  • Direct feed from UK Government CMA API
  • Updated every 30 minutes via automated polling
  • Zero user-submitted prices (prevents manipulation)
  • Last sync: 11:44, 04 Apr 2026
Quality Assurance
  • Automated anomaly detection for pricing errors
  • Cross-referenced against regional averages
  • Outliers flagged for manual review
  • Historical data tracked for trend validation
Verified Data Source: All prices displayed on this page are sourced directly from the Competition and Markets Authority's official fuel price transparency scheme. We do not accept payments from retailers to alter rankings or display preferential pricing.
Data Accuracy & Methodology

Source: We retrieve real-time pricing data directly from the UK Government CMA Open Data Scheme.

Frequency: Data for Clase, Cwmrhydyceirw, Clydach, Morriston, Plasmarl, Plasmarl Industrial Estate, Swansea Enterprise Park, Ynystawe, Ynysforgan was last synchronized at 11:15 today. We update our database every 4 hours to ensure accuracy.

Disclaimer: While we strive for 100% accuracy, forecourt prices can change instantly. The prices listed above were correct at the time of our last server sync.

Editorial Policy

CheckFuelPrices is independent. We do not accept payment from fuel brands to alter rankings. Read our full policy.

📈 7-Day Price Movement
Petrol (E10) 4.2p
Was: 148.8p → Now: 153p
Diesel (B7) 5.8p
Was: 177.8p → Now: 183.6p

Visualise the Savings

View 20 local stations on our interactive map.

Open Live Map
Popular Brands in Clase, Cwmrhydyceirw, Clydach, Morriston, Plasmarl, Plasmarl Industrial Estate, Swansea Enterprise Park, Ynystawe, Ynysforgan
Old Pump Filling Station Texaco Murco ASDA SHELL