Fuel Cost Calculator UK
For Drivers & Fleet Managers
Calculate petrol, diesel and electric costs for single trips, daily commutes and entire vehicle fleets, instantly.
Use Google Maps for accurate distance
Apr 2026 avg: petrol 148p · diesel 153p
UK avg home rate Apr 2026: 24p/kWh
Small Car (55)
Medium Car (42)
Large/SUV (34)
Van (38)
Light Truck (30)
HGV Rigid (22)
Artic 44t (10)
Motorcycle (65)
Efficient EV (4.2)
Average EV (3.5)
Large EV (2.8)
E-Van (2.2)
Your Fuel Cost Estimate
Total Cost
Cost Per Mile
pence per mile
Fuel Used
litres
Your Cost vs With Transpoco
See what you could save by optimising fleet fuel spend
Your Current Cost
With Transpoco
−10% saving
−10% saving
With Transpoco
−15% saving
−15% saving
Transpoco Fleet Intelligence
You're leaving money on the table
Real-time telematics tracks every litre, every route and every driver behaviour — automatically reducing fuel waste across your entire fleet.
potential annual saving with Transpoco
Small Car (55)
Medium Car (42)
Large/SUV (34)
Van (38)
Light Truck (30)
HGV Rigid (22)
Motorcycle (65)
Efficient EV (4.2)
Average EV (3.5)
Large EV (2.8)
Your Commuting Costs
Per Day
return trip
Per Week
fuel only
Per Month
4.33 weeks
Per Year
48 weeks
Annual Commute Cost vs With Transpoco
If your employer covered your commute — here's what efficient fleet management saves
Current Annual Cost
With Transpoco
−10% saving
−10% saving
With Transpoco
−15% saving
−15% saving
Transpoco Fleet Intelligence
Scale this saving across your whole fleet
Multiply your commute costs by every driver in your organisation. Transpoco gives fleet managers full visibility of fuel spend — per vehicle, per driver, per route.
potential annual saving per driver with Transpoco
UK commercial van average: ~80 miles/day
Apr 2026 avg diesel: 153p/L
Diesel Van (38)
Petrol Car (45)
Small Car (55)
Light Truck (30)
HGV Rigid (22)
Artic 44t (10)
Tipper (15)
Coach/Bus (8)
Efficient EV (4.2)
Average EV (3.5)
Large EV (2.8)
E-Van (2.2)
E-Truck (1.5)
Fleet Fuel Cost Estimate
Daily (whole fleet)
per operating day
Weekly
whole fleet
Monthly
whole fleet
Annual
whole fleet
Annual Fleet Cost vs With Transpoco
The cost of not having telematics — year after year
Current Annual Cost
With Transpoco
−10% saving
−10% saving
With Transpoco
−15% saving
−15% saving
Transpoco Fleet Intelligence
Your fleet is spending more than it needs to
Driver behaviour, idle time, unoptimised routes — these invisible costs add up to thousands per year. Transpoco makes them visible and actionable from day one.
potential annual saving across your fleet
Guide
How to Use This Fuel Cost Calculator
This tool covers three distinct use cases: a single journey, your regular commute, and managing a full commercial fleet. Choose the tab that matches your need and enter the figures below.
Journey Calculator
Enter the total distance in miles, select your fuel type, input the current pump price in pence per litre, and enter your vehicle's MPG. Use the quick-select presets to fill the MPG field instantly. Choose one-way or return journey, then click Calculate.
Commute Cost Calculator
Enter your one-way commute distance and how many days per week you travel. The calculator returns your daily, weekly, monthly and annual fuel spend.
Fleet Fuel Cost Calculator
Built for fleet and transport managers. Enter your total number of vehicles, average daily mileage, fuel type and fleet MPG. The calculator returns total fleet fuel spend and estimates how much you could save with telematics.
April 2026
Current UK Fuel Prices
The figures below reflect UK average pump prices as of April 2026. Always check your local station for the most accurate figures.
⛽
Petrol (Unleaded)
148p
per litre · UK average
🚛
Diesel
153p
per litre · UK average
⚡
Electric (Home)
24p
per kWh · Ofgem rate
🔌
Electric (Public)
~65p
per kWh · rapid charger
Methodology
How to Calculate Fuel Cost: The Formula
The UK sells fuel in litres but measures efficiency in miles per gallon (MPG). One UK imperial gallon equals 4.546 litres, which differs from the US gallon (3.785 litres).
Petrol & Diesel Formula
Standard UK Fuel Cost Formula
Fuel Cost (£) = (Distance ÷ MPG) × 4.546 × (Price in pence ÷ 100)
Example: 200 miles, 40 MPG, petrol at 148p/litre
= (200 ÷ 40) × 4.546 × 1.48 = £33.64
Electric Vehicle Formula
EV Cost Formula
EV Cost (£) = (Distance ÷ Miles per kWh) × (kWh price in pence ÷ 100)
Example: 200 miles, 3.5 mi/kWh, 24p/kWh
= (200 ÷ 3.5) × 0.24 = £13.71
Fleet Fuel Consumption Formula
Fleet Total Cost Formula
Daily Fleet Cost (£) = Vehicles × Daily Miles × (4.546 ÷ MPG) × (Price ÷ 100)
Example: 10 vans, 80 miles/day, 38 MPG, diesel at 153p
= 10 × 80 × 0.1196 × 1.53 = £146.40/day · £43,900/year
Context
What Affects Fuel Costs for UK Fleets?
Fuel spend is shaped by a combination of external market forces and internal operational factors you can directly influence.
01
Government Intervention & Fuel Duty
UK fuel duty stands at 52.95p per litre, roughly a third of the pump price. VAT at 20% is applied on top.
02
Crude Oil & Financial Markets
Brent crude is priced in USD, so GBP/USD exchange rate movements directly affect UK pump prices.
03
Geographic Area
Rural locations can see prices 8-12p higher per litre than supermarket forecourts in urban England.
04
Vehicle Type & Load Weight
A van carrying full payload uses significantly more fuel than the same vehicle running empty.
05
Driver Behaviour
Harsh acceleration, excessive idling and speeding can increase fuel consumption by 20-30%.
06
Route Efficiency
Unoptimised routes inflate mileage directly. Route planning software can cut fleet mileage by 10-20%.
Best Practices
How to Reduce Fleet Fuel Costs
Fuel is typically the second-largest operating cost for UK fleets after labour. These approaches deliver the highest return on effort.
📊
Monitor Driver Behaviour in Real Time
Telematics identifies harsh braking, rapid acceleration and excessive idling. Fleets using behaviour monitoring typically see 10-15% fuel reduction within 90 days.
🗺️
Optimise Routes Across the Fleet
Route optimisation eliminates unnecessary mileage and avoids congestion. Even a 5% mileage reduction translates to thousands of pounds in annual savings.
🔧
Maintain Tyre Pressure Fleet-Wide
Under-inflated tyres can raise fuel consumption by 3-5%. For a fleet running 10 vehicles at 80 miles per day, that costs hundreds of pounds per month.
⏱️
Eliminate Unnecessary Idling
An idling diesel van consumes roughly 0.8 litres per hour. Telematics can flag excessive idle events automatically.
⚡
Plan Your EV Transition Strategically
For routes under 100 miles, electric vehicles already cost significantly less per mile than diesel, particularly with home or depot charging.
💳
Use Fleet Fuel Cards
Fuel cards provide discounted pump prices, consolidated invoicing and detailed transaction-level reporting.
FAQ
Frequently Asked Questions
How accurate is this fuel cost calculator?
The calculator provides estimates based on your inputs. Real-world fuel costs vary depending on traffic, driving style, vehicle load and road type. For fleet management, Transpoco telematics tracks actual consumption in real time.
What MPG should I use for my fleet vehicles?
Start with the manufacturer's official figure, then apply a 15-20% reduction for real-world conditions. If you already use telematics, use the actual average MPG reported by your fleet management system.
How do I calculate fuel cost for multiple vehicles?
Use the Fleet tab above. Enter the total number of vehicles and the average daily mileage per vehicle. For mixed fleets, run separate calculations for each vehicle type and add the results together.
What is the average fuel cost per mile in the UK in 2026?
At April 2026 average prices, a typical petrol car doing 40 MPG costs approximately 16.8p per mile. A diesel vehicle at 45 MPG costs around 15.4p per mile. An electric vehicle charged at home costs approximately 6.9p per mile.
What is the formula to calculate UK fuel cost?
The standard UK formula is: Fuel Cost (£) = (Distance in miles / MPG) x 4.546 x (Price in pence per litre / 100). The 4.546 figure converts gallons to litres using the UK imperial gallon.
How can fleet management software reduce fuel spend?
Fleet telematics identifies harsh acceleration, excessive idling, speeding and poor route choices. Transpoco customers typically achieve 10-15% fuel savings within the first quarter of deployment.
Stop Estimating. Start Tracking.
Transpoco gives fleet managers real-time visibility of every litre consumed, every mile driven and every pound spent, across your entire fleet, automatically.
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