See also:

Safety
The BMW 1 Series hasn't been crash-tested. It includes frontal, front-seat side-impact and side curtain airbags. Also standard are antilock brakes and an electronic stability system with traction ...

Close the windows and glass sunroof
Driving with the glass sunroof and windows open results in increased air resistance and raises fuel consumption. ...

Interior motion sensor
The windows and glass sunroof must be closed for the system to function properly. ...