BMW is considering reintroducing range extender technology for future electric versions of the X5 and 7 Series, driven by surging demand in major markets—especially China and the US.

Ferdinand Porsche developed the first range-extender system in 1900 for the Lohner-Porsche Mixte, equipping the all-electric vehicle with a gasoline-powered generator to recharge its batteries.

Modern Extended-Range Electric Vehicles (EREVs) operate as full EVs, using a small combustion engine only as a generator when the battery is low.

China, which accounted for nearly 30% of BMW’s global deliveries last year, is leading the shift, with EREV sales up almost 50% in early 2025 thanks to brands like Li Auto, Aito, and BYD.

The X5 and 7 Series are seen as strong candidates for BMW’s return to this setup due to their size and packaging flexibility.

Growing US interest—particularly among SUV and truck buyers—mirrors this trend, with similar generator-based systems appearing in models like the Ramcharger and Scout SUV.

In Europe, EREVs might even offer BMW a way to navigate stricter future emissions rules, though this remains uncertain.

While no production program has been approved, rising global demand suggests BMW is seriously reevaluating the technology.