How Petrol Station Pricing Works

The Murky Mechanics Behind the Forecourt

Petrol prices are a bit like the weather: everyone’s got an opinion, they’re constantly changing, and no one seems to know who’s really in control. You drive past three stations in ten minutes and spot three wildly different prices – how does that even happen?

This article breaks down how petrol station pricing actually works – from the global oil market to the local forecourt, with some classic marketing insights thrown in. Because yes, psychology plays as big a role in the price you pay as geopolitics.

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It All Starts With Crude Oil

The base price of petrol is tied to crude oil – the raw, unrefined stuff drilled from the ground in places like Saudi Arabia, the US, and Russia. Crude oil prices are set on global markets, predominantly through trading hubs like Brent Crude (North Sea) and West Texas Intermediate (USA).

These prices fluctuate daily based on:

  • Supply and demand: War in Ukraine? Cut in OPEC+ production? Spike in travel after a pandemic? All these affect the balance.

  • Speculation: Traders buy and sell oil futures based on predictions, which affects short-term prices even if actual supply hasn’t changed.

  • Currency rates: Oil is traded in US dollars, so a weaker pound means Brits pay more, even if oil prices remain steady.

This raw cost makes up roughly 30–40% of the price you see at the pump.

Then Comes Refining and Wholesale Pricing

Crude oil needs to be refined into usable fuels like petrol (gasoline) and diesel. Refineries (many based in the UK, Netherlands, and other parts of Europe) handle this, and their operating costs, maintenance downtime, and environmental regulations all impact pricing.

The refined fuel is then sold on the wholesale market – and this is where regional supply chains come into play.

Some interesting quirks:

  • If a UK refinery is undergoing maintenance, fuel might need to be imported, which increases costs.

  • Wholesale petrol and diesel prices can move independently – diesel has more industrial demand and stricter refining processes, making it more volatile.

Forecourts buy at this wholesale price, which changes daily, but they usually fix retail prices for longer to avoid scaring consumers away with hourly updates.

Tax – The (Not-So) Hidden Chunk

In the UK, about half the price of a litre of fuel is tax. There are two main components:

  • Fuel Duty – currently fixed at 52.95p per litre (as of 2025).

  • VAT (Value Added Tax) – charged at 20% on the total price, including duty.

Let’s do a quick example:

If a station buys fuel at 55p/litre wholesale:

  • Add 52.95p duty → 107.95p

  • Add a 5p retail margin → 112.95p

  • Add 20% VAT → approx 135.54p at the pump

So even if a station sells at 135p, their actual profit margin might only be 3–6p per litre.

Why Prices Vary Between Stations

Now for the bit that gets people shouting at the radio: why do two stations on the same road charge different prices?

Here are the main reasons:

1. Location, Location, Location

  • Motorway services charge more because of convenience – they know you’re a captive audience.

  • Rural areas may charge more due to transport costs.

  • Stations near supermarkets or other petrol providers often go lower to stay competitive.

2. Ownership Model

  • Supermarket petrol (Tesco, Asda, Sainsbury’s) often runs at or near cost price, using fuel as a loss leader to get you in-store.

  • Independent stations rely on fuel sales for profit, so margins are tighter and prices are higher.

  • Branded forecourts (Shell, BP, Esso) sometimes charge more due to brand loyalty or added value like loyalty schemes or premium fuels.

3. Dynamic Pricing Tools

Larger chains now use algorithms – yes, algorithms – to tweak prices based on:

  • Nearby competitor prices

  • Time of day

  • Demand patterns

  • Stock levels

Much like airlines or Amazon, fuel pricing is becoming increasingly dynamic.

Marketing Tricks on the Forecourt

There’s more than economics at play. Petrol pricing is also a psychological game:

  • .9 Pricing: 134.9p looks less than 135p – a classic charm price trick.

  • Price Boards: Visible from far away, used to draw drivers in – especially important for brand trust and impulse visits.

  • Premium Fuels: Positioned as better for your engine or offering better mileage, but often with higher margins for the station.

One study found that over 50% of drivers don’t understand what “premium” fuels do, but many still pay the extra. That’s branding and psychology working overtime.

The Politics of Petrol Pricing

The UK government regularly comes under pressure to cut fuel duty or curb profiteering. In recent years, watchdogs like the Competition and Markets Authority (CMA) have investigated whether fuel retailers pass on wholesale savings fast enough.

In fact, in 2023 the UK government announced plans to make fuel pricing more transparent – including a voluntary fuel price comparison scheme and more consistent signage to help consumers shop around.

Expect more digital disruption in this space, with apps and electric vehicle comparisons making pricing more competitive.

Final Thoughts: What Marketers Can Learn

So what does this mean for marketers?

  • Price isn’t just a number – it’s a signal. Petrol stations show how much pricing reflects competition, location, and convenience.

  • Anchoring is powerful. Many people compare today’s price to the last number they remember, not the underlying value.

  • Bundling works. Supermarkets use petrol as a hook – proof that adjacent products can drive footfall, even if they’re not profitable on their own.

  • Transparency matters. In the age of digital comparison tools, consumers are savvier than ever – and trust matters.

And perhaps most importantly: even in a highly regulated, commoditised market, branding still wins. People still choose Shell over Joe’s Fuel Shack, even if Joe’s is 3p cheaper.

Because perception is everything.

TL;DR – Petrol Station Pricing Explained

  • The price at the pump starts with global crude oil prices and ends with local decisions.

  • Tax (fuel duty + VAT) makes up around half the price in the UK.

  • Supermarkets often sell fuel at cost to drive store visits, while independents rely on margin.

  • Forecourt pricing involves psychology, branding, and increasing use of algorithms.

  • Marketing strategies like premium fuel upselling and loyalty schemes keep customers coming back – even when prices hurt.