Bjørn Nyland tests out the Cooper SE's acceleration and noise. He takes it from 0-100 km/h (62 mph) in about 6.6 seconds which is about 0.7 seconds faster than advertised.
For noise it didn't do as well as it got 70.4 decibels at 100 km/h. Putting it behind the Tesla Model 3. But that's kind of to be expected for such a small car.