|Chassis||Carbon fibre monocoque|
|Suspension (front)||Double wishbone, pushrod|
|Suspension (rear)||Double wishbone, pushrod|
|Engine||Ford HBA1, 3,498 cc (213.5 cu in), 75° V8, NA, mid-engine, longitudinally mounted|
|Transmission||Benetton transverse 6-speed manual|
|Notable entrants||Benetton Formula Ltd|
|Notable drivers|| Alessandro Nannini
|Debut||1989 French Grand Prix|
The Benetton B189 was a Formula One racing car designed by Rory Byrne and raced by the Benetton team in the 1989 Formula One season. The car replaced the B188 that had been in use from the 1988 season.
The car was due to be available from the start of the season but was delayed by various problems as it was designed to take Ford's new HBA1 V8 engine which was in constant development. It was also delayed as the teams lead driver Alessandro Nannini had crashed it during testing. The car finally appeared at the French Grand Prix where Nannini qualified 4th but retired with broken rear suspension on lap 40. A second B189 was made available from the German Grand Prix and was driven by McLaren test driver Emanuele Pirro.
The B189 got its only win at the 1989 Japanese Grand Prix when Nannini finished 2nd on the road but was awarded the win after McLaren's Ayrton Senna was disqualified. Pirro moved quickly from his 22nd starting spot to 10th by lap 33 before being forced out due to a crash.
A modified version of the car, the B189B, raced in the first two races of the 1990 Formula One season. The car was again driven by Alessandro Nannini who was joined at Benetton by three time World Drivers' Champion Nelson Piquet. The B189B was powered by a development of the Ford HBA1 V8, the HBA4.
The B189B was replaced after the second race of the 1990 season by the B190. The B189B was the last Benetton to use the distinctive air intakes on either side of the cockpit with the B190 having a single airbox in the now standard position above the drivers head.
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