2009 Saturn Aura Hybrid Review

From Cars.com: The five-seat Aura Hybrid features GM's Hybrid System, which consists of an electric motor/generator teamed with a 2.4-liter four-cylinder engine. This system is not as advanced as the company's two-mode hybrid system, which is offered in the Saturn Vue. The Hybrid System, however, provides fuel economy savings of up to 25% overall. The 2009 Aura Hybrid has a recalibrated hybrid system that delivers enhanced overall gas mileage.

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New Low-Cost GM Hybrid System Previewed in Geneva, Will Debut in North America by 2010

General Motors Chairman and CEO Rick Wagoner

As another key element in its overall global strategy to improve fuel economy and reduce oil consumption and CO2 emissions, General Motors Chairman Rick Wagoner announced yesterday that GM will introduce a second-generation version of the GM Hybrid System with a new, more powerful lithium-ion battery.