According to a recent report, the Chevrolet Volt and Cadillac ELR could adopt a three-cylinder range extending engine.

According to a recent report, the Chevrolet Volt and Cadillac ELR could adopt a three-cylinder range extending engine.

Edmunds says the engine would displace 1.0- or 1.2-liters and could be co-developed with one of the company's Chinese partners. There's no word on specifications, but the engine is expected to be lighter and more fuel efficient than the current 1.4-liter four-cylinder engine.

The move apparently ties into General Motor's initiative to reduce their vehicles weight by up to 15 percent by 2016. A GM spokesperson declined to discuss their future plans, but the company has previously said their three-cylinder engines will go into production by mid-decade and be used globally.

If the changeover is approved, the three-cylinder engine could be used in the 2015 Volt and the 2016 ELR.

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