(USA Today) Plug-in electric cars may be cutting-edge technology, but an analysis suggests that most will depreciate more dramatically over five years than their conventional counterparts.

Some of the biggest value gaps involve 2014 models powered only by batteries, entirely without gas engines, according to the analysis performed by Kelley Blue Book at the request of USA TODAY. Examples:

Chevrolet Spark EV. The little electric is projected to be worth 28% of its $28,305 list price in five years, while a comparable conventional version of the same car will retain 40% of its value.

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