By the beginning of 1990, the "Subaru" flat engine was not producing more than 500
bhp, so the Coloni Subaru was one of the least competitive machines regularly competing in Formula One...In the pits at Phoenix, the car was assembled for the very first time, and a short
shakedown took place in the parking area of an American supermarket. On the prequalification day at Phoenix the Formula One world saw Coloni's "new" model C3B which wore a white, red and green livery, but without an airbox and with wide, long sidepods. It did not follow common design practices for the time, was overweight by 300 pounds and ill-handling. Neither at Phoenix nor at any other race did
Bertrand Gachot, Coloni's new driver, manage to prequalify the car...In May, Enzo Coloni was sacked by Subaru, but no improvement came. In June, the Japanese company withdrew completely and sold the team back to Enzo Coloni, debt free, but with no sponsors and no engines.