Ioniq, ID, EQ... what makes an electric sub-brand succeed?
Reintegrating an electric executive saloon back into the traditional fold makes particular sense to me, then: it's the E-Class you've known and respected all your life but now it offers the option of a zero-emissions powertrain. Smart.
Stellantis likes doing the same, because it means it can build one model and be flexible about the proportion of powertrains that it fits: it views electric propulsion as just an alternative to a petrol or diesel or hybrid system, figuring that what you actually want is a Peugeot 208 or a Vauxhall Astra, then secondarily you're just choosing how best to power it.
And if more people want EVs, fine: the factories just build fewer petrol ones, rather than having entire models at the mercy of EV adoption rates. I'd think that, by now, we would see the start of consensus on what works best for car makers when it comes to this (electric-only and new brands excepted, of course) and that for legacy manufacturers (for want of a better phrase for them), giving customers the cars they know and like, just with differing levels of electrification, would be the answer.
Yet not everybody is making a success of it this way. The Renault 5 has been reborn as an EV only and it seems to be doing just fine for itself. Some of Hyundai's EVs wear the Ioniq tag rather than being electric variants of pre-existing models.
And even within the big manufacturer groups there isn't outright consensus: Skoda is continuing to offer unique EV models happily, whereas Volkswagen is rowing back on its ID brand towards names that we already know and love. At some point surely we will call the forthcoming ID Polo just the Polo?