1. What is the Plug-in Hybrid Mileage Calculator?

The Plug-in Hybrid Mileage Calculator estimates the total miles per gallon (MPG) for plug-in hybrid electric vehicles (PHEVs) by accounting for both electric and gasoline-powered miles.

2. How Does the Calculator Work?

The calculator uses the PHEV mileage equation:

Where:

• \( electric\_mi \) — Miles driven in electric mode
• \( gas\_mi \) — Miles driven in gasoline mode
• \( total\_gal \) — Total gallons of gasoline used

Explanation: This calculation gives a more accurate representation of overall efficiency by accounting for both energy sources.

3. Importance of MPG Calculation for PHEVs

Details: Traditional MPG calculations don't account for electric miles, making PHEVs appear less efficient than they actually are. This method provides a more complete picture.

4. Using the Calculator

Tips: Enter all miles driven (both electric and gas) and total gallons of gasoline used. All values must be valid (miles ≥ 0, gallons > 0).

5. Frequently Asked Questions (FAQ)

Q1: Why calculate MPG this way for PHEVs?
A: Traditional MPG calculations only consider gasoline usage, which doesn't reflect the true efficiency of PHEVs that use both electricity and gasoline.

Q2: What's a good MPG for a PHEV?
A: Most PHEVs achieve 50-100+ MPG equivalent when accounting for electric miles, though this varies based on driving patterns.

Q3: How should I track my electric and gas miles?
A: Many PHEVs track this data in their trip computers. You can also note odometer readings when switching between modes.

Q4: Does this account for electricity costs?
A: No, this is purely a mileage calculation. For cost analysis, you'd need to factor in electricity prices.

Q5: Can I use this for regular hybrids?
A: No, this is specifically for plug-in hybrids where you can track separate electric and gas miles.