Originally Posted by AllAWD
I don't think you can make that direct assumption. Many hybrids incorporate lightening to compensate for the hybrid drive. That may be harder on a car designed to be light.
As you also can't make the assumption that the hybrid drive would weigh 400 lbs. Civic hybrid drive weighs ~100 lbs, the Camry hybrid drive weighs ~ 260 ish. Not unreasonable to assume Toyota would make every effort, like you stated to incorporate lightening to compensate for the hybrid drive. No reason why it couldn't weigh around 100-150 lbs.