GM cars to get smaller engines with turbos
Never mind fuel cells, plug-ins or diesels. To achieve quick improvements in fuel economy, General Motors is adopting an off-the-shelf technology: small engines with turbochargers. Next year GM will introduce a turbocharged 1.4-liter gasoline engine for small U.S. cars. The Chevrolet Cobalt and Saturn Astra are candidates for the engine, which is available without a turbocharger in the European Opel Astra. GM engineering chief Jim Queen confirmed the company's plans to use the powertrain and said it could be used in mid-sized vehicles, too.