New Alfa Romeo 4C concept teased in a new color - as the concept introduces its next version.

Alfa Romeo has teased the 4C again - this time ahead of the sport coupe's next concept version which will debut at the Frankfurt motor show next month.

The teaser image seen here does not tell us much, as the 4C looks the same as the concept we saw at Geneva, new is the gray color.

The initial concept came with a four-cylinder (4C) 1750 Turbo Multi-Air unit with an output of 200 PS (147 kW / 197 bhp).

We await further details.

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