On paper, the overhauled Chevrolet Malibu lineup looks strong, and the first model to arrive is the Eco. But the car, a mild hybrid, doesn’t make a very strong case for its particular approach to efficiency.

Uber, a car service with a following among urbanites, is trying to expand its appeal to the less affluent by adding less luxurious cars.

Some compact E.V.'s are engineered for greater efficiency at the expense of driving range, while others travel far, but do so relatively inefficiently.

Uber, a start-up based in San Francisco, has won a following among urbanites with its novel twist on calling a car service: its app lets you summon a luxury sedan with a tap on your phone. Now it is trying to appeal to the less affluent by adding less luxurious cars. In San Francisco and New York on Wednesday, Uber will start to give customers the option of choosing a hybrid car at a price that it says will be 10 to 25 percent more than a taxi. That compares with the 40 to 100 percent premi...

By summer’s end, nearly a dozen plug-in cars and crossovers may be traveling California’s highways. Here is a look at some of the newest models.