The 2024 BMW M5 is 24 percent heavier than its predecessor. Most of the added heft comes from the newly-incorporated plug-in hybrid drivetrain. The new M5 is heavier than the combustion-powered 760i xDrive sedan. The epidemic of automotive weight gain is by no means a new phenomenon. A combination of mandated safety requirements, added luxury, and general bloating of all dimensions means that beloved models tend to put on the pounds over the years—much like the majority of us humans.
That's the biggest jump we've seen from the model, although the gulf between the original E28 M5 and the E34 M5, which was around 740 lbs heavier, was almost as bad.