Five stories today and only one of them belongs to a company that got where it was going on its own. That is not an accusation. It is simply what this stage of the transition looks like from the inside, where the badge on the bonnet increasingly sits on top of somebody else's platform, somebody else's factory, or somebody else's testing.
The clearest case is the Mazda 6e, which is a Changan Deepal SL03 underneath with Mazda styling on top and reworked suspension between the two. Mazda kept the two things a brand cannot really outsource, how the car looks and how it rides, and What Car? reports that the ride is exactly where it comes apart. The borrowed engineering works. The bespoke engineering is the part under fire. That is an uncomfortable result for anyone who assumed the badge was the quality control.
Land Rover is running the same arithmetic from a different direction. The electric Range Rover GT sits on JLR's EMA platform, described in the briefing as electric first rather than electric only, wording that points to an architecture built to stay flexible as the market slowed. Even the e-truck world tour is a partnership in everything but name. It is only possible because a manufacturer agreed to stand behind a stock production truck for a year, and the driver says as much: the brands without a global service network never made the shortlist.
Then there is the other kind of dependence. Both Rivian stories today, the tow test at maximum rating and the run to a dead stop, were done in an owner's car by people who bought in rather than by the company that built it. Rivian did not publish the buffer. Somebody with the keys went and measured it.
The thing to watch over the next six months is where differentiation actually lands once platforms are shared this widely. It stops being hardware and becomes tuning, software behaviour and support, which are precisely the things no spec sheet captures and no press release admits to. That is why independent and owner run testing keeps growing in importance. It is filling a gap the manufacturers created.
Bottom line: shared platforms are not the problem, and pretending otherwise ignores how cars have been built for thirty years. The problem is that as more of the car comes from somewhere else, the badge stops being a reliable shortcut for a buyer, and the burden of finding out what a car is really like shifts onto reviewers, owners and you. Mazda's is the cautionary tale of the day. The bit it did itself is the bit that went wrong.
Editorial commentary drawing on third-party videos covered by nexusEVnews. Figures and claims are as presented in those sources and have not been independently verified. Spotted an error? Tell us and we will correct it.