Lexus' product planning chief wants a GS F super sedan to take on the likes of the BMW M5.

Back in December, Leftlane reported that sources within Lexus stated that the company "would love" to build a GS F super sedan to underscore the automaker's newfound commitment to building exciting, driver-focused cars.

Now comes word from Autocar that one of the high-ranking execs advocating for the GS F is no less than Lexus product planning chief Karl Schlicht, who believes that the car would be a natural complement to the company's existing IS F and LFA performance machines.

"With a GS-F, we would have a solid pyramid structure of performance models," said Schlicht.

Despite the positive impact the car could have on the car buying public's perception of Lexus' lineup, Schlicht said that he "didn't yet have it approved" with Toyota's senior management.

Schlicht didn't comment on what might be under the hood of a production GS F, but company insiders have hinted that the car would use a modified version of the LFA's 4.8-liter V10. The mill would likely be reduced to 4.6-liters and 450 horsepower but be tuned to provide more low-end torque.

Although it would be geared to take on the likes of fire-breathing models like the BMW M5 and Mercedes-Benz E63 AMG, the GS F would still need to uphold Lexus' reputation for refinement, Schlicht noted.