Electrification and rated range index

What counts as electrified here

The scope is deliberately broad: hybrid, plug-in hybrid, battery-electric and fuel-cell. A conventional hybrid that recovers braking energy but never plugs in is included, and so is a fuel-cell vehicle with no meaningful plug-in battery at all.

That breadth is the right measure for a market census, but it means the headline number cannot be read as a plug-in count. A make can appear well represented here on the strength of hybrid variants of otherwise conventional vehicles.

• Conventional hybrids are included and do not plug in
• Plug-in hybrids and battery-electric vehicles are both present
• Fuel-cell rows are matched on EPA's own abbreviations, not on the phrase 'fuel cell'
• A family counts once regardless of how many electrified rows it contains

How to read the range column

The figure shown is the highest positive electric-range value among that make's electrified configurations. For a battery-electric vehicle it is the rated range of its longest-range configuration. For a plug-in hybrid it is the electric-only portion, which is a small fraction of total driving range.

Makes showing a dash: Land Rover, Jaguar, Ram: have electrified families whose configurations report no positive electric range, which is the expected result for a lineup electrified only through conventional hybrids.

• The value is a maximum across configurations, not a lineup average
• Plug-in hybrid figures are electric-only, not total range
• Conventional hybrids normally report no electric range at all
• EPA range is a standardized test result, not a guarantee for any trip

Why rated range and real range differ

EPA range testing is conducted under standardized conditions. Real-world range moves with temperature, speed, terrain, cabin heating, payload and tire condition, and the gap is largest in cold weather where cabin heat draws from the same battery that moves the vehicle.

Sustained highway speed is the other dominant factor, because aerodynamic drag rises steeply with speed. A vehicle that comfortably meets its rating in mixed suburban driving can fall well short of it at high sustained speed in winter. With no fault present.

• Cold weather reduces both battery efficiency and available energy after heating
• High sustained speed costs more range than any other driving variable
• Preconditioning while plugged in shifts heating load to the grid
• Rated range is a comparison tool between vehicles, not a trip planner

Depth versus breadth

Comparing the electrified-family count against the electrified-configuration count separates two different commitments. Mercedes-Benz, Volvo, Tesla, Vinfast, Bentley, Land Rover and 8 others have electrified every current family, which is breadth.

A make with fewer electrified families but a high configuration count has instead built depth. Multiple battery sizes, drivetrains and body styles within a smaller set of models. Neither pattern is better; they answer different questions about how much choice a buyer actually has.