1. What is the Gas Mileage Savings Formula?

The Gas Mileage Savings formula calculates how much money you can save by switching to a vehicle with better fuel efficiency (higher MPG) or how much more you'll spend with a less efficient vehicle.

2. How Does the Calculator Work?

The calculator uses the following formula:

Where:

• \( Old\ MPG \) — Original vehicle's miles per gallon
• \( New\ MPG \) — New vehicle's miles per gallon
• \( Distance \) — Miles you plan to drive
• \( Price \) — Cost per gallon of gasoline

Explanation: The formula compares fuel consumption between two vehicles over a given distance at current gas prices.

3. Importance of MPG Comparison

Details: Understanding potential fuel savings helps when considering vehicle upgrades, evaluating commuting costs, or comparing rental car options.

4. Using the Calculator

Tips: Enter your current vehicle's MPG, the new vehicle's MPG, your expected driving distance, and current gas price. All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What if my new vehicle gets worse MPG?
A: The calculator will show a negative value, indicating how much more you'll spend.

Q2: How accurate is this calculation?
A: It provides theoretical savings based on EPA ratings. Actual savings may vary based on driving habits and conditions.

Q3: Should I include highway and city MPG separately?
A: For most accurate results, use the MPG that matches your typical driving pattern or calculate each scenario separately.

Q4: Does this account for hybrid/electric vehicles?
A: For hybrids, use the combined MPG rating. For pure EVs, you'll need a different calculation based on electricity costs.

Q5: Can I use this for long-term cost projections?
A: For long-term projections, consider potential changes in gas prices and your annual mileage.