General Motors engineers put the 2016 Chevrolet Volt on a diet to increase its performance and boost its range on a single battery charge to 50 miles from 38. The plug-in hybrid, which goes on sale in the second half of 2015, shed 243 pounds from the 2015 model. A significant share of that weight was cut from the gasoline-electric powertrain. Here’s how GM made the Volt’s powertrain lighter, along with some other notable engineering changes.
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