Fuel Saving Calculator UK

Fuel Saving Formula:

\[ Savings = \left(\frac{miles}{old\ mpg} - \frac{miles}{new\ mpg}\right) \times price\ per\ litre \times \frac{4.546}{4.546} \]

Miles Driven:

miles

Old Miles Per Gallon:

mpg

New Miles Per Gallon:

mpg

Fuel Price:

pence/litre

Savings:

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1. What is the Fuel Saving Calculator?

The Fuel Saving Calculator estimates how much money you can save by improving your vehicle's fuel efficiency. It calculates the difference in fuel consumption between your current and improved MPG (miles per gallon) and converts this to monetary savings based on current fuel prices.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ Savings = \left(\frac{miles}{old\ mpg} - \frac{miles}{new\ mpg}\right) \times price\ per\ litre \times \frac{4.546}{4.546} \]

Where:

\( miles \) — Distance driven in miles
\( old\ mpg \) — Current fuel efficiency in miles per gallon
\( new\ mpg \) — Improved fuel efficiency in miles per gallon
\( price\ per\ litre \) — Current fuel price in pence per litre
4.546 — Conversion factor from gallons to litres

Explanation: The equation calculates the difference in gallons used, converts to litres, then multiplies by the price per litre to determine monetary savings.

3. Importance of Fuel Saving Calculation

Details: Calculating potential fuel savings helps in making informed decisions about vehicle upgrades, maintenance, or driving habit changes. It demonstrates the financial benefits of improving fuel efficiency.

4. Using the Calculator

Tips: Enter the miles you drive, your current MPG, the improved MPG you expect to achieve, and the current fuel price per litre. All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: Why convert from gallons to litres?
A: In the UK, fuel is sold in litres but vehicle efficiency is typically measured in MPG, so conversion is necessary for accurate calculations.

Q2: How accurate is this calculation?
A: The calculation provides a good estimate, but actual savings may vary based on driving conditions, vehicle load, and other factors.

Q3: Can I use this for electric vehicles?
A: This calculator is designed for petrol/diesel vehicles. Different calculations are needed for electric vehicles based on kWh consumption.

Q4: What's a typical MPG improvement I might see?
A: Regular maintenance can improve MPG by 3-4%, while switching to a more efficient vehicle could double your MPG in some cases.

Q5: How often should I recalculate my potential savings?
A: Recalculate whenever fuel prices change significantly or if you make changes to your vehicle or driving habits that affect fuel efficiency.