Mercedes-AMG previously teased the arrival of a new four-door model, which everyone is calling the GT4, or GT Four-Door Coupe, depending on who you ask. While an official name has yet to be provided, the company is more than willing to share new images of its upcoming model wearing a matte black wrap and plenty of flame decals.

These images also give us a very good look at the car’s headlight and taillight design, the former being visibly different from the two-door GT. Other prevalent cues on this flashy unit include a Panamericana grille, large air vents at the front, quad exhausts, a rear diffuser and a rear spoiler.

Mercedes-AMG GT4 undergoing wind tunnel testing

The “hot rod” look was also seen on a mule undergoing cold-weather testing, which was captured by our spies. Viewed from the side, the GT4 certainly appears to have a shorter rear overhang and smaller side windows compared to the CLS – a model that some say the GT4 undermines. However, company CEO Tobias Moers had previously stated there is already a loyal customer base for the CLS, and the GT4 is about drawing in new customers from other brands.

The brand in question is likely Porsche and its Panamera (the car is seen being benchmarked against in spyshots), which in its most potent Turbo S E-Hybrid form, serves up 671 hp and 850 Nm of torque from a hybridised powertrain. While technical details of the GT4 aren’t out yet, a 4.0 litre biturbo V8 is expected to be employed with hybrid tech to bring outputs to as high as 815 hp.

GALLERY: Mercedes-AMG GT four-door spyshots