First Drive: 2016 Hyundai Sonata PHEV and HEV
Green Car Congress
MAY 26, 2015
The second-generation hybrid system has been thoroughly enhanced from its predecessor: The downsized GDI engine features an aluminum block and head, a compression ratio of 13.5:1, The Sonata PHEV is perfectly capable of handling (legal) Interstate speeds on battery pack alone; however, such operation depletes the battery relatively quickly.
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