A host of 86 (Scion FR-S) coupe models marks Toyota’s presence at the Tokyo Auto Salon 2013, but the Japanese carmaker also prepared several other models including a prototype of its recently updated Mark X G Sports sedan.

As the name implies, the Mark X G Sports Carbon Roof Concept trades the regular model’s steel roof for lightweight carbon fibre top, which Toyota says reduces body weight and increases driving performance.

Other than that, there are no changes to the Mark X G Sports that rides on the previous generation Lexus GS platform with power coming from a 3.5-liter V6 engine rated for 314hp (319PS) at 6,400rpm and 340Nm (251 lb-ft) at 7,800rpm, linked to a 6-speed automatic transferring power to the rear wheels.

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