Fuel Consumption Comparison Calculator UK
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Reviewed by Calculator Editorial Team
Compare fuel consumption between different vehicles in the UK to make informed decisions about your fuel costs. This calculator helps you understand which vehicle is more efficient based on official fuel consumption figures.
How to Use This Calculator
To compare fuel consumption between two vehicles:
- Enter the fuel consumption figures for each vehicle in litres per 100 kilometres (l/100km).
- Enter the distance you plan to travel in kilometres.
- Enter the fuel price in GBP per litre.
- Click "Calculate" to see the comparison results.
The calculator will show you the total fuel cost for each vehicle, the difference in cost, and a visual comparison chart.
Formula Used
The fuel cost for each vehicle is calculated using the following formula:
Where:
- Fuel Consumption is in litres per 100 kilometres (l/100km)
- Distance is in kilometres (km)
- Fuel Price is in GBP per litre (£/l)
The difference in cost is calculated as:
Worked Example
Let's compare a Petrol Car and a Diesel Car:
- Petrol Car: 6.5 l/100km
- Diesel Car: 5.2 l/100km
- Distance: 1000 km
- Fuel Price: £1.50/l
Calculations:
- Petrol Car Cost: (6.5 / 100) × 1000 × 1.50 = £97.50
- Diesel Car Cost: (5.2 / 100) × 1000 × 1.50 = £78.00
- Cost Difference: £97.50 - £78.00 = £19.50
The diesel car is more fuel-efficient, saving you £19.50 on fuel for this journey.
Vehicle Comparison
Here's a comparison of typical fuel consumption figures for common vehicle types in the UK:
| Vehicle Type | Fuel Type | Average Consumption (l/100km) |
|---|---|---|
| Petrol Car | Petrol | 6.5 |
| Diesel Car | Diesel | 5.2 |
| Hybrid Car | Petrol/Electric | 4.8 |
| Electric Car | Electric | 15.0 (kWh/100km) |
Note: Electric car consumption is shown in kilowatt-hours per 100 kilometres (kWh/100km) as this is the standard metric for electric vehicles in the UK.
Frequently Asked Questions
How accurate is this fuel consumption comparison?
This calculator uses standard fuel consumption figures provided by vehicle manufacturers. For the most accurate results, use the official figures from the vehicle's technical specifications.
Can I compare vehicles with different fuel types?
Yes, you can compare vehicles with different fuel types. The calculator will show you the cost difference based on the fuel consumption figures you enter.
How do I find the fuel consumption figure for my vehicle?
You can find the fuel consumption figure in your vehicle's handbook or on the manufacturer's website. It's typically listed as litres per 100 kilometres (l/100km).