BMW 740e, X5 xDrive 40e: where do low-range plug-in hybrids fit in?
More than a year ago, we spent a weekend with a 2016 BMW X5 xDrive 40e luxury plug-in hybrid SUV. Rated at 14 miles of range, it never achieved anything near that number in winter weather. Now our colleague Kirk Bell has driven a 2017 BMW 740e plug-in hybrid luxury sedan that uses the same powertrain. DON'T MISS: 2017 BMW 740e xDrive iPerformance...