Fuel Price Check Analysis – Week of March 31, 2026 Petrol (E10) 153.7p 2.5% (+3.8p) 7d avg: 152p Hold off if you can | Super Unleaded (E5) 171.4p 2.7% (+4.5p) 7d avg: 169.2p Hold off if you can | Diesel (B7) 184.3p 3.7% (+6.6p) 7d avg: 181.3p Hold off if you can | Super Diesel (SDV) 201.9p 2.4% (+4.8p) 7d avg: 199.6p Hold off if you can |
Fuel Price Check Analysis – Week of March 31, 2026 Petrol (E10) 153.7p 2.5% (+3.8p) 7d avg: 152p Hold off if you can | Super Unleaded (E5) 171.4p 2.7% (+4.5p) 7d avg: 169.2p Hold off if you can | Diesel (B7) 184.3p 3.7% (+6.6p) 7d avg: 181.3p Hold off if you can | Super Diesel (SDV) 201.9p 2.4% (+4.8p) 7d avg: 199.6p Hold off if you can |

Today’s Cheapest Petrol and Diesel in Cardiff city centre, Canton, Cardiff Bay, Grangetown: The Full Report

A comprehensive breakdown of fuel prices in the Cardiff city centre, Canton, Cardiff Bay, Grangetown 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 Thursday, 2nd April 2026 at 03:15
7
Local Stations
26
Brands (CF Area)
5.0p
Max Price Gap
#23
UK Ranking REGION
Key Takeaways
  • Cheapest petrol: 150.9p at ASDA
  • Potential savings: Up to £2.75 per tank
  • 100 stations tracked across 26 brands

Motorists in Cardiff city centre, Canton, Cardiff Bay, Grangetown are currently enjoying some of the lowest fuel prices in the UK, ranking in the top 19% nationally. Over the past week, E10 petrol prices in CF have Increased 4.6p (3.1%)

According to our latest data feed from the Competition and Markets Authority (CMA), selecting the right forecourt in Cardiff city centre, Canton, Cardiff Bay, Grangetown could save you up to 5.0p per litre. For an average 55-litre family car, that's a saving of over £2.75 on a single tank.

Market Competition: Moderate competition

Competition Level: High

Cardiff city centre, Canton, Cardiff Bay, Grangetown has 100 active fuel stations across 26 different brands, with a brand diversity index of 0.26 - indicating healthy market competition.

The price spread between cheapest and average stations is 10.9p, revealing significant price differences - shop around to save!

Today's Best Value

Cheapest E10 Petrol in Cardiff, Cardiff city centre, Canton, Cardiff Bay, Grangetown:
150.9p at ASDA, FERRY ROAD RETAIL PARK, CARDIFF, WALES

Cheapest B7 Diesel in Cardiff, Cardiff city centre, Canton, Cardiff Bay, Grangetown:
178.9p at ASDA, FERRY ROAD RETAIL PARK, CARDIFF, WALES

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

Fuel Type Availability

E10
Unleaded (E10)
Widely available
99 / 100 Stations (99%)
E5
Super Unleaded (E5)
Moderate availability
70 / 100 Stations (70%)
B7
Diesel (B7)
Widely available
99 / 100 Stations (99%)
SDV
Premium Diesel
Moderate availability
44 / 100 Stations (44%)

Top 7 cheapest petrol stations (E10)

Here is the verified list of the most affordable places to buy standard Unleaded petrol in Cardiff city centre, Canton, Cardiff Bay, Grangetown today.

PETROL LEADERBOARD Live Data
1
ASDA
FERRY ROAD RETAIL PARK, CARDIFF, WALES , CF11 0JR
150.9p
BEST PRICE
2
ASDA
CAPITAL RETAIL PARK-LECKWITH ROAD, CARDIFF, WALES , CF11 8AZ
151.7p
+0.8p
3
MORRISONS
INTERNATIONAL DRIVE, CARDIFF BAY, CARDIFF, WALES , CF11 0JP
151.9p
+1.0p
4
TEXACO
SLOPER ROAD, LECKWITH, CARDIFF, WALES , CF11 8AF
154.9p
+4.0p
5
ESSO
235 CORPORATION ROAD, CARDIFF, GLAMORGAN, WALES , CF11 7AS
154.9p
+4.0p
6
ESSO
CATHEDRAL ROAD, CARDIFF, SOUTH GLAMORGAN, WALES , CF11 9HA
155.9p
+5.0p
7
VALERO HADFIELD RD
HADFIELD ROAD, CARDIFF, GLAMORGAN, WALES , CF11 8WD
155.9p
+5.0p

Top 7 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 Cardiff city centre, Canton, Cardiff Bay, Grangetown area.

DIESEL LEADERBOARD Live Data
1
ASDA
FERRY ROAD RETAIL PARK, CARDIFF, WALES , CF11 0JR
178.9p
BEST PRICE
2
ASDA
CAPITAL RETAIL PARK-LECKWITH ROAD, CARDIFF, WALES , CF11 8AZ
179.7p
+0.8p
3
MORRISONS
INTERNATIONAL DRIVE, CARDIFF BAY, CARDIFF, WALES , CF11 0JP
181.9p
+3.0p
4
ESSO
CATHEDRAL ROAD, CARDIFF, SOUTH GLAMORGAN, WALES , CF11 9HA
186.9p
+8.0p
5
TEXACO
SLOPER ROAD, LECKWITH, CARDIFF, WALES , CF11 8AF
187.9p
+9.0p
6
ESSO
235 CORPORATION ROAD, CARDIFF, GLAMORGAN, WALES , CF11 7AS
187.9p
+9.0p
7
VALERO HADFIELD RD
HADFIELD ROAD, CARDIFF, GLAMORGAN, WALES , CF11 8WD
189.9p
+11.0p

How to save on fuel in Cardiff city centre, Canton, Cardiff Bay, Grangetown

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 Cardiff city centre, Canton, Cardiff Bay, Grangetown.

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

"Cardiff city centre, Canton, Cardiff Bay, Grangetown benefits from strong market competition with 26 brands operating across 100 stations. Prices have climbed 4.6p this week, so filling up sooner rather than later is advisable, while ranking in the top 19% 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 2, 2026, the cheapest station is ASDA at 150.9p per litre.

There is currently a 5.0p difference between the cheapest and most expensive stations in Cardiff city centre, Canton, Cardiff Bay, Grangetown. For a standard family car, this equals a saving of £2.75 per tank.

Not currently. An independent or oil-company brand (ASDA) 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: 03:51, 02 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 Cardiff city centre, Canton, Cardiff Bay, Grangetown was last synchronized at 03:15 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) 4.6p
Was: 148.2p → Now: 152.8p
Diesel (B7) 9.1p
Was: 174.4p → Now: 183.5p

Visualise the Savings

View 14 local stations on our interactive map.

Open Live Map
Popular Brands in Cardiff city centre, Canton, Cardiff Bay, Grangetown
ASDA MORRISONS TEXACO ESSO VALERO HADFIELD RD