Today’s Cheapest Petrol and Diesel in Alltwen, Cwmtawe, Pontardawe, Rhos, Rhyd-y-fro, Trebanos, Ynysmeudwy: The Full Report

A comprehensive breakdown of fuel prices in the Alltwen, Cwmtawe, Pontardawe, Rhos, Rhyd-y-fro, Trebanos, Ynysmeudwy 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, 7th February 2026 at 03:10
1
Local Stations
41
Brands (SA Area)
0.0p
Max Price Gap
#2
UK Ranking REGION
Key Takeaways
  • Cheapest petrol: 126.9p at TESCO
  • Potential savings: Up to £0.00 per tank
  • 109 stations tracked across 41 brands
  • Prices have decreased 0.6p this week

Motorists in Alltwen, Cwmtawe, Pontardawe, Rhos, Rhyd-y-fro, Trebanos, Ynysmeudwy are currently enjoying some of the lowest fuel prices in the UK, ranking in the top 2% nationally. Over the past week, E10 petrol prices in SA have Decreased 0.6p (0.5%)

According to our latest data feed from the Competition and Markets Authority (CMA), selecting the right forecourt in Alltwen, Cwmtawe, Pontardawe, Rhos, Rhyd-y-fro, Trebanos, Ynysmeudwy could save you up to 0.0p per litre. For an average 55-litre family car, that's a saving of over £0.00 on a single tank.

Market Competition: Moderate competition

Competition Level: High

Alltwen, Cwmtawe, Pontardawe, Rhos, Rhyd-y-fro, Trebanos, Ynysmeudwy has 109 active fuel stations across 41 different brands, with a brand diversity index of 0.38 - indicating healthy market competition.

The price spread between cheapest and average stations is 7.1p, revealing significant price differences - shop around to save!

Today's Best Value

Cheapest E10 Petrol in Swansea, Alltwen, Cwmtawe, Pontardawe, Rhos, Rhyd-y-fro, Trebanos, Ynysmeudwy:
126.9p at TESCO, Tesco Stores Ltd Gwyns Drift Alltwen Pontardawe Swansea

Cheapest B7 Diesel in Swansea, Alltwen, Cwmtawe, Pontardawe, Rhos, Rhyd-y-fro, Trebanos, Ynysmeudwy:
136.9p at TESCO, Tesco Stores Ltd Gwyns Drift Alltwen Pontardawe Swansea

Surprisingly, an independent or branded station (TESCO) has beaten the supermarkets to the top spot today.

Fuel Type Availability

E10
Unleaded (E10)
Widely available
102 / 109 Stations (93.6%)
E5
Super Unleaded (E5)
Moderate availability
63 / 109 Stations (57.8%)
B7
Diesel (B7)
Widely available
101 / 109 Stations (92.7%)
SDV
Premium Diesel
Moderate availability
29 / 109 Stations (26.6%)

Top 1 cheapest petrol stations (E10)

Here is the verified list of the most affordable places to buy standard Unleaded petrol in Alltwen, Cwmtawe, Pontardawe, Rhos, Rhyd-y-fro, Trebanos, Ynysmeudwy today.

PETROL LEADERBOARD Live Data
1
TESCO
Tesco Stores Ltd Gwyns Drift Alltwen Pontardawe Swansea , SA8 3AZ
126.9p
BEST PRICE

Top 1 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 Alltwen, Cwmtawe, Pontardawe, Rhos, Rhyd-y-fro, Trebanos, Ynysmeudwy area.

DIESEL LEADERBOARD Live Data
1
TESCO
Tesco Stores Ltd Gwyns Drift Alltwen Pontardawe Swansea , SA8 3AZ
136.9p
BEST PRICE

How to save on fuel in Alltwen, Cwmtawe, Pontardawe, Rhos, Rhyd-y-fro, Trebanos, Ynysmeudwy

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 Alltwen, Cwmtawe, Pontardawe, Rhos, Rhyd-y-fro, Trebanos, Ynysmeudwy.

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

"Alltwen, Cwmtawe, Pontardawe, Rhos, Rhyd-y-fro, Trebanos, Ynysmeudwy benefits from strong market competition with 41 brands operating across 109 stations. Ranking in the top 2% nationally makes this an excellent area for fuel savings, while with a 7.1p price gap between cheapest and average stations, careful selection could save £3.91 per tank."

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

Frequently Asked Questions

As of February 7, 2026, the cheapest station is TESCO at 126.9p per litre.

There is currently a 0.0p difference between the cheapest and most expensive stations in Alltwen, Cwmtawe, Pontardawe, Rhos, Rhyd-y-fro, Trebanos, Ynysmeudwy. For a standard family car, this equals a saving of £0.00 per tank.

Not currently. An independent or oil-company brand (TESCO) 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: 03:27, 07 Feb 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 Alltwen, Cwmtawe, Pontardawe, Rhos, Rhyd-y-fro, Trebanos, Ynysmeudwy was last synchronized at 03:10 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) 0.6p
Was: 129.3p → Now: 128.7p
Diesel (B7) 0.9p
Was: 138.6p → Now: 137.7p

Visualise the Savings

View 2 local stations on our interactive map.

Open Live Map
Popular Brands in Alltwen, Cwmtawe, Pontardawe, Rhos, Rhyd-y-fro, Trebanos, Ynysmeudwy
TESCO