Fuel Price Check Analysis – Week of April 28, 2026 Petrol (E10) 157.3p 0.3% (+0.5p) 7d avg: 157.1p Prices stable | Super Unleaded (E5) 174.2p 0.1% (+0.1p) 7d avg: 174.2p Prices stable | Diesel (B7) 187.6p 0.3% (-0.5p) 7d avg: 187.9p Prices stable | Super Diesel (SDV) 207.5p 0.3% (-0.6p) 7d avg: 207.9p Prices stable |
Fuel Price Check Analysis – Week of April 28, 2026 Petrol (E10) 157.3p 0.3% (+0.5p) 7d avg: 157.1p Prices stable | Super Unleaded (E5) 174.2p 0.1% (+0.1p) 7d avg: 174.2p Prices stable | Diesel (B7) 187.6p 0.3% (-0.5p) 7d avg: 187.9p Prices stable | Super Diesel (SDV) 207.5p 0.3% (-0.6p) 7d avg: 207.9p Prices stable |

Today’s Cheapest Petrol and Diesel in Portstewart: The Full Report

A comprehensive breakdown of fuel prices in the Portstewart area. We analyze the market data to help you save on your next fill-up.

Jonathan Mathews
Automotive Data Analyst
10+ years automotive industry
Last Updated Saturday, 9th May 2026 at 02:55
3
Local Stations
213
Brands (BT Area)
1.0p
Max Price Gap
#2
UK Ranking REGION
Key Takeaways
  • Cheapest petrol: 153.9p at CIRCLE K
  • Potential savings: Up to £0.55 per tank
  • 463 stations tracked across 213 brands

Motorists in Portstewart 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 BT have Increased 2.2p (1.5%)

According to our latest data feed from the Competition and Markets Authority (CMA), selecting the right forecourt in Portstewart could save you up to 1.0p per litre. For an average 55-litre family car, that's a saving of over £0.55 on a single tank.

Market Competition: Moderate competition

Competition Level: High

Portstewart has 463 active fuel stations across 213 different brands, with a brand diversity index of 0.46 - indicating healthy market competition.

The price spread between cheapest and average stations is 29.5p, revealing significant price differences - shop around to save!

Today's Best Value

Cheapest E10 Petrol in Portstewart, Portstewart:
153.9p at CIRCLE K, 162 STATION ROAD, PORTSTEWART, NORTHERN IRELAND

Cheapest B7 Diesel in Portstewart, Portstewart:
175.9p at CIRCLE K, 162 STATION ROAD, PORTSTEWART, NORTHERN IRELAND

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

Fuel Type Availability

E10
Unleaded (E10)
Widely available
419 / 463 Stations (90.5%)
E5
Super Unleaded (E5)
Moderate availability
196 / 463 Stations (42.3%)
B7
Diesel (B7)
Widely available
450 / 463 Stations (97.2%)
SDV
Premium Diesel
Limited availability
110 / 463 Stations (23.8%)

Top 3 cheapest petrol stations (E10)

Here is the verified list of the most affordable places to buy standard Unleaded petrol in Portstewart today.

PETROL LEADERBOARD Live Data
1
CIRCLE K
162 STATION ROAD, PORTSTEWART, NORTHERN IRELAND , BT55 7PU
153.9p
BEST PRICE
2
LARKHILL SERVICE STATION
LARKHILL SERVICE STATION, 171, COLERAINE ROAD, PORTSTEWART, Northern Ireland , BT55 7HU
154.9p
+1.0p
3
Spar Larkhill Service Station
LARKHILL SERVICE STATION, 171, COLERAINE ROAD, PORTSTEWART, BT55 7HU, PORTSTEWART, NORTHERN IRELAND , BT55 7HU
154.9p
+1.0p

Top 3 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 Portstewart area.

DIESEL LEADERBOARD Live Data
1
CIRCLE K
162 STATION ROAD, PORTSTEWART, NORTHERN IRELAND , BT55 7PU
175.9p
BEST PRICE
2
LARKHILL SERVICE STATION
LARKHILL SERVICE STATION, 171, COLERAINE ROAD, PORTSTEWART, Northern Ireland , BT55 7HU
179.9p
+4.0p
3
Spar Larkhill Service Station
LARKHILL SERVICE STATION, 171, COLERAINE ROAD, PORTSTEWART, BT55 7HU, PORTSTEWART, NORTHERN IRELAND , BT55 7HU
179.9p
+4.0p

How to save on fuel in Portstewart

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 Portstewart.

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

"Portstewart benefits from strong market competition with 213 brands operating across 463 stations. Prices have climbed 2.2p this week, so filling up sooner rather than later is advisable, while ranking in the top 2% 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 May 9, 2026, the cheapest station is CIRCLE K at 153.9p per litre.

There is currently a 1.0p difference between the cheapest and most expensive stations in Portstewart. For a standard family car, this equals a saving of £0.55 per tank.

Not currently. An independent or oil-company brand (CIRCLE K) 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: 02:58, 09 May 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 Portstewart was last synchronized at 02:55 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) 2.2p
Was: 151.2p → Now: 153.4p
Diesel (B7) 0.5p
Was: 177.1p → Now: 177.6p