2019 Infiniti QX50 crossover to debut variable-compression engine

Infiniti QX50 concept, 2017 Detroit auto showEfforts by automakers to increase fuel efficiency and reduce carbon emissions have intensified in recent years as emission rules have tightened and the effects of climate change are better analyzed. While electric cars and hybrids will grow in popularity, the internal-combustion engine remains the default way of power—and likely will for...