Electric, hybrid, and gasoline vehicles carry different major drive parts, so a form that fits one may leave a gap in another. Build the list from your own vehicle before you compare any forms.
Start with the drive parts on your vehicle
A gasoline vehicle relies heavily on the engine and transmission. A hybrid also carries a high-voltage battery, an inverter, and an electric drive unit alongside the engine. A battery-electric vehicle depends on its traction battery, drive motor, inverter, and onboard charger. Write down the parts that make your vehicle move and the parts that store and control its power, using the owner's manual and the title as your sources.
Compare each form against your list
Read the covered parts section and mark each drive component as named, not named, or unclear. A form may name a motor but not the battery, or a battery but not the charger. Where a part is unclear, ask the provider to state in writing whether it is included. Keep a separate list for each form so the forms are compared on the same parts.
Check the battery and charging terms
Battery terms vary widely. Look for how the form measures battery condition, whether it addresses gradual loss of capacity, and what evidence it asks you to provide. Check whether the form covers charging equipment, the cable, or a home charger, and whether any charging-related damage is excluded. Ask whether the form treats the battery as a covered part or as a wear item, because that changes what you can claim.
Match the use and the mileage
Note your typical daily driving, any towing, and any commercial use. Compare those with the use limits the form states. A form written for light personal use may read very differently from one written for heavier driving.
Compare the lists, not the brochures
Set the named-part lists for each form side by side. This site publishes no comparison of individual companies or their contracts. Use the state pages on this site to see which rules govern the form in your state, then read the form itself, because the form controls what the provider must do.