In 1986 Road and Track tested the Benetton B186 BMW formula 1 car.
The car was driven by Teo Fabi, and R&T used special test equipment to get the figures.
The car was tested at Siverstone with appropriate gearing. The turbocharged engine used race boost - 3.7 bar 850 bhp at 11,000 rpm
The following figures were obtain:
Top speed
194 mph at 11, 300 rpm
Acceleration
0 - 60 3.0
0 - 100 4.8
0 - 120 5.6
0 - 140 6.8
0 - 160 8.4
0 - 175 10.0
SS 1/4 9.4 at 169 mph
The top timed top speed for the car in 1986 was
218.238 mph at Monza (5.4 bar boost was observed)
not aware of any recent tests, to specifically establish such