Today’s Cheapest Petrol and Diesel in Penarth, Dinas Powys, Sully, Llandough: The Full Report

A comprehensive breakdown of fuel prices in the Penarth, Dinas Powys, Sully, Llandough 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 Tuesday, 10th February 2026 at 08:10
2
Local Stations
23
Brands (CF Area)
6.0p
Max Price Gap
#38
UK Ranking REGION
Key Takeaways
  • Cheapest petrol: 129.9p at TESCO
  • Potential savings: Up to £3.30 per tank
  • 86 stations tracked across 23 brands

Motorists in Penarth, Dinas Powys, Sully, Llandough are currently experiencing competitive fuel prices, with average costs below the national median. Over the past week, E10 petrol prices in CF have Increased 1.4p (1%)

According to our latest data feed from the Competition and Markets Authority (CMA), selecting the right forecourt in Penarth, Dinas Powys, Sully, Llandough could save you up to 6.0p per litre. For an average 55-litre family car, that's a saving of over £3.30 on a single tank.

Market Competition: Moderate competition

Competition Level: High

Penarth, Dinas Powys, Sully, Llandough has 86 active fuel stations across 23 different brands, with a brand diversity index of 0.27 - indicating healthy market competition.

The price spread between cheapest and average stations is 6.7p, revealing significant price differences - shop around to save!

Today's Best Value

Cheapest E10 Petrol in Dinas Powys, Penarth, Penarth, Dinas Powys, Sully, Llandough:
129.9p at TESCO, Tesco Stores Ltd Terra Nova Way Penarth

Cheapest B7 Diesel in Dinas Powys, Penarth, Penarth, Dinas Powys, Sully, Llandough:
136.9p at TESCO, Tesco Stores Ltd Terra Nova Way Penarth

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

Fuel Type Availability

E10
Unleaded (E10)
Widely available
82 / 86 Stations (95.3%)
E5
Super Unleaded (E5)
Moderate availability
57 / 86 Stations (66.3%)
B7
Diesel (B7)
Widely available
80 / 86 Stations (93%)
SDV
Premium Diesel
Moderate availability
35 / 86 Stations (40.7%)

Top 2 cheapest petrol stations (E10)

Here is the verified list of the most affordable places to buy standard Unleaded petrol in Penarth, Dinas Powys, Sully, Llandough today.

PETROL LEADERBOARD Live Data
1
TESCO
Tesco Stores Ltd Terra Nova Way Penarth , CF64 1SA
129.9p
BEST PRICE
2
Texaco
TEXACO DINAS POWYS, 65, CARDIFF ROAD, DINAS POWYS, CF64 4JS, DINAS POWYS, Wales , CF64 4JS
135.9p
+6.0p

Top 2 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 Penarth, Dinas Powys, Sully, Llandough area.

DIESEL LEADERBOARD Live Data
1
TESCO
Tesco Stores Ltd Terra Nova Way Penarth , CF64 1SA
136.9p
BEST PRICE
2
Texaco
TEXACO DINAS POWYS, 65, CARDIFF ROAD, DINAS POWYS, CF64 4JS, DINAS POWYS, Wales , CF64 4JS
141.9p
+5.0p

How to save on fuel in Penarth, Dinas Powys, Sully, Llandough

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 Penarth, Dinas Powys, Sully, Llandough.

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

"Penarth, Dinas Powys, Sully, Llandough benefits from strong market competition with 23 brands operating across 86 stations. With a 6.7p price gap between cheapest and average stations, careful selection could save £3.69 per tank, while interestingly, TESCO is beating supermarkets on price today."

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

Frequently Asked Questions

As of February 10, 2026, the cheapest station is TESCO at 129.9p per litre.

There is currently a 6.0p difference between the cheapest and most expensive stations in Penarth, Dinas Powys, Sully, Llandough. For a standard family car, this equals a saving of £3.30 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: 08:46, 10 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 Penarth, Dinas Powys, Sully, Llandough was last synchronized at 08:10 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) 1.4p
Was: 130.2p → Now: 131.6p
Diesel (B7) Stable
Was: 138p → Now: 138.2p

Visualise the Savings

View 4 local stations on our interactive map.

Open Live Map
Popular Brands in Penarth, Dinas Powys, Sully, Llandough
TESCO Texaco