Fuel economy rises at Detroit auto show

Fuel economy has become a key factor in today's cars. Gas prices are higher in recent years on average, and consumers are finding their cash stretched further at the pump. In addition, the federal government has adopted new standards that require automakers to increase their fleets' fuel economy.

As these standards are phased in, automakers will be introducing new fuel-efficient models and improving the mileage on existing models. Here are five cars from the 2013 North American International Auto Show in Detroit that will help you save money. Their fuel economy numbers are estimates from the manufacturers.

2014 Cadillac ELR

Under the hood: 1.4-liter gasoline-powered electric generator with lithium-ion battery
Fuel economy: 98 miles per gallon equivalent, or mpge (estimated)
On sale: Early 2014

2014 Infiniti Q50 Hybrid

Under the hood: 3.5-liter V-6 with electric motor
Fuel economy: 30 mpg city/34 mpg highway (estimated)
On sale: Summer 2013

2014 Jeep Grand Cherokee

Under the hood: 3-liter EcoDiesel V-6
Fuel economy: 30 mpg highway (estimated)
On sale: Expected spring 2013

2013 Nissan Leaf

Under the hood: 80-kilowatt AC synchronous motor with lithium-ion battery
Fuel economy: 99 mpge (estimated)
On sale: February 2013

Volkswagen Cross Coupe concept

Under the hood: TDI clean-diesel engine with electric motors
Fuel economy: 89 mpge in electric mode; 35 mpg as a hybrid (estimated)
On sale: A version in production within two years


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