The Mercedes-AMG GT cuts a rather striking shape, even if it has been on the market for over three years now. Even so, an initial glance at these spy images here reveal hardly a change from what’s available currently, until we take a closer look at its rear end.

Here, we can see that the exhaust pipes on the badges-concealed white test mule are of the circular kind, instead of the trapezoidal surrounds we have seen thus far. We’ve seen these round quad tailpipes elsewhere in the AMG line-up before, namely on the Mercedes-AMG CLS 53 and E 53 to name but two. Elsewhere, the flanks on the test mule where the ‘V8 Biturbo’ badging normally resides is absent here, further hinting at a different heart beneath its long bonnet.

This can be taken to mean that the AMG flagship two-seater is being developed with the AMG 53 mild-hybrid turbo inline-six powertrain, thus paving the way for a more affordable entry-level variant to two-seater GT ownership. Headline figures for the EQ Boost mild-hybrid powertrain in the E 53 are 435 hp and 520 Nm of torque, of which 22 PS and 250 Nm of torque can be summoned from the 48-volt electric starter/generator.

Exact details for this powertrain application hasn’t surfaced with this early sighting of the six-cylinder GT, though it could stand to gain slightly more in output for use in the two-seater. This can be expected to be paired with AMG’s nine-speed Speedshift TCT 9G transmission, and most likely retaining rear-wheel-drive in classic GT fashion.

There is already an AMG bearing the GT name with the turbo straight-six, though that is the GT 43 4-door Coupe which is based on the MRA platform that underpins the marque’s RWD-oriented models, rather than that of the two-seater AMG GT. Also given the two-seater GT’s place in the hierarchy, the expected use of the ’53’ suffix is more than a little likely.