Considering the Chevy Volt and Cadillac ELR will have separate battery suppliers (the Chevy with LG Chem and the Caddy with A123), it’s fairly predictable that the two will also host different engine generators to fuel the batteries when their charge gets too low. Notably, there have been recent talks of the current 1.4L Ecotec engine in the Volt being replaced by 2014 — seemingly right on track for a mid-cycle refresh. The 2014 model year is also when the ELR will launch.
While there’s plenty to expect from the plug-in Caddy — such as a complete difference in looks from the Volt inside and out — the powertrain is still a big mystery, though a recent report from Car & Driver suggests we could see a bored-out version of whatever engine finds itself in the Volt, perhaps as much as 2.0-liters, but more likely to be 1.8. This, of course, is a prediction, but definitely one that we could see happening as well.