The back end is now as horrifying as the front.
The next-generation BMW M4 has been teased and spied six ways to Sunday, meaning an official reveal must be imminent. Like the standard 4 Series, the M4 will sport BMW's massive new grille, which is polarizing to the eye if you didn't know. Less so is what's under the hood. Expect a 3.0-liter twin-turbocharged inline-six producing 480 horsepower in base form, and 510 hp in Competition guise. The M4 Competition should be the most powerful model at launch, but quicker versions will come later. And now there's proof.
A new spy shot from DiddyF30 on Instagram, a post which has since been deleted, shows what appears to be an all-new M4 GTS variant. For those who don't remember, the GTS was the most extreme variant of the previous generation M4, and only 300 examples of the car made it to the United States.
The last M4 GTS was characterized by its massive rear wing, half roll cage inside (on European models), an uprated engine with water injection, weight savings, and gold-colored wheels. We can tell this latest spy shot shows a more extreme version of the upcoming M4 based on its raised rear spoiler. This wing is smaller than the one found on the previous M4 GTS but larger than we've seen in any previous spy shots of the upcoming new model.
This M4 GTS test mule also wears a vastly different exhaust outlet setup than any other M4 we've spied. The quad tips are positioned in the center of the rear bumper in a unique formation that looks reminiscent of how the Lexus RC F stacks its exhaust pipes. They look epic.
The last M4 GTS produced 493 hp, which was a massive increase over the standard car's 425 hp output. If the same holds true for this new model, it could produce close to 600 hp, if things continue to escalate in the same fashion. No other details are known about this next-generation M4 GTS, but we expect to see more spy shots and rumors shortly, though a full reveal is likely far off.
The M4 has already drawn design criticism for the massive grille, but if this shot of the rear is any prediction of how the GTS might look, it could be a car that polarizes opinion from all angles.