Mercedes-AMG had a very good thing going with its snarling twin-turbo V8s, until they were replaced by four-cylinder hybrid — and plug-in hybrid — powertrains in certain models. To say the move was poorly received is an understatement, but rumours suggest another powertrain shuffle is in the works.

According to Autocar, an unnamed but senior company exec hinted that future internal-combustion-powered AMGs will stick with one of two engines: an updated version of the inline-six used in the 53-series cars, or a new V8 currently under development. Their reasoning is simple: it’s what people want.

“Technically, the four-cylinder is one of the most advanced [engines] available in a production car,” the source told Autocar. “It’s also right up there on performance. But despite this, it failed to resonate with our traditional customers. We’ve recognized that.”

This means the days of the 671-horsepower PHEV powertrain will be phased out, and that the four-cylinder 43-series cars may revert to the inline-six. Currently, Mercedes-AMG uses the four-cylinder PHEV powertrain in the C63 and GLC 63.

What this doesn’t mean is that Mercedes-AMG is turning their back on electrification. Currently, the inline-six is a mild-hybrid or PHEV depending on the vehicle, and the upcoming V8 will feature a 48-volt mild hybrid assist. Exact timing of the powertrain shuffle is still under wraps, but past rumours suggested the C 63 could get the V8 back as early as 2026.