[bm323]

"There is no way around it: this is a heavy sportscar. Based on our own research, since BMW is not yet ready to comment on the weight differences, the M3/M4 six-speed, rear-wheel drive is around 1780 kilograms, a whooping 185 kilos heavier than the manual F80. Of course, you won’ feel that extra heft during regular commutes, but on track, you will notice it.

Now to mitigate that extra weight, BMW gave a bit more power to the new generation M3/M4. The S58 3.0 liter in the non-Competition models makes 473 horsepower. Peak torque of 406 lb-ft is served up from 2650 to 6130 rpm on the regular model. It will be fast for most people, even without the 503 ponies in the Competition models, but there is a little bit of a turbo lag. Not a deal breaker since I’ve experienced that in most recent M cars, but enough to make me point it out."

https://www.bmwblog.com/2021/03/09/2...-drive-review/

May not be for equivalent specs, but it appears the difference may well be 185 kilos with the popular/standard options for the G8X vs the F8X ie the actual weight difference for the popular/standard optioned cars.

[Germanauto]

I can't wait to drive this car. I never drove a Competition F8X but the early iterations of the car I found to be quite numb and unexciting. From watching reviews the G8X seems to look like a more visceral car, but I won't know until I drive it. The M3 is now what the M5 was not even a decade ago. There's no getting around its weight and size.

Would love to see a direct comparison between both models.

[solstice]

This guy comments on the added weight and how it impacts the agility and feel of the car between 24min and 25min mark.

“It feel lighter than the predecessor, way lighter”

He is also joining the reviewers who says acceleration feel quick as an AWD car. Most of the driving notes are from the 23min mark.

[TigahRouge]

The G82 turns in very well. The steering is sharp. The power delivery is linear. Trust me she hides her weight very well.