447kW seven seater potentially on the cards. But will it fit the M brand?
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The upcoming BMW X7 flagship SUV isn't even on the market yet, but reports from overseas are already claiming a high-performance M version could be in the works.

According to BMW Blog, "various sources" from Munich indicate BMW is considering an X7 M or X7 M Performance to duke it out with high-powered rivals such as the Mercedes-AMG GLS63, Bentley Bentayga, and Audi SQ7.

It's believed the success of the smaller X5 M and X6 M models have prompted the Bavarian marque to consider an M option for buyers of its largest X model, despite potential criticism that such a large vehicle doesn't fit the values of the M brand.

While capacity and configuration of the powertrain aren't mentioned, the publication believes a power output in the vicinity of 600hp (447kW) is likely – 6kW more than the new M5, though the Competition version bumps that figure up to 460kW.

Should that output be accurate, expect the X7 M to be powered by a 4.4-litre twin-turbo V8, as per the M5 and 8 Series M850i. The current AMG GLS63, by comparison, makes 430kW and 760Nm from its 5.5-litre twin-turbo V8.

Considering the core X7 range is expected to be revealed before the end of the year, an M version likely won't make its debut until mid- to late-2019.

However, it's all scuttlebutt at this stage, so we'll wait and see if an X7 M is confirmed first before speculating about an Australian launch.

Stay tuned to CarAdvice for all the latest.