The BMW i3 REx model is an unusual beast, the sole example to date of a car built specifically to comply with California regulations that define it as a zero-emission electric car even though it has a ...

The BMW i3 REx model is an unusual beast, the sole example to date of a car built specifically to comply with California regulations that define it as a zero-emission electric car even though it has a ...

Electric cars are a tough sell. They were an even tougher sell in the earlier part of this decade, which led to some automakers plopping range extenders inside their machines to ensure there was ...

The rapid progress of lithium-ion battery-cell energy density and the growth of fast-charging networks have together helped write the epitaph for BMW’s range-extending technology, badged REx on the ...

Many people that order the range extender option on the i3 do so because they just aren't comfortable with the BEV i3's 81 mile EPA range rating. Personally, I really didn't want it, but my driving ...

Buyers of BMW's upcoming i3 city car will have a choice to make: pure electricity, or electricity with a dash of petrol-powered range extension. For now, BMW has revealed only one version of the ...

BMW caused a few waves in 2013 with the start of production of the i3, a high-roof hatchback combining CFRP and aluminum in its construction with two levels of electrification. On the other hand, it ...