The new M5 has let itself go compared to its predecessor, but some would argue it was a necessary evil. There's still a big V-8 engine under the hood, only this time, it's supplemented by an electric motor built into the gearbox. Turning the super sedan into a plug-in hybrid has added a lot of fat, but it allowed BMW to future-proof the car and meet increasingly stringent emissions regulations. However, social media hasn't been kind to the "G90."
