The Alfa Romeo Protèo concept car was exhibited at the Geneva Motor Show in 1991.

It is a 2-door coupé cabriolet with folding roof, featuring a 3.0 liter quad-cam 24-valve (2959 cc), 60 degree V6 coupled with a 5-speed manual transmission, with a top speed of 250 km/h (155 mph).

The Protèo uses shortened floorpan used in Alfa Romeo 164 and features four wheel drive and steering.

Concept was presented in a dark metallescent red paintwork, that was later included in the Alfa Romeo range as Rosso Proteo.

[5] The prototype is on display at the Alfa Romeo History Museum in Arese, Italy.