Mazda 6 Manual page 236

When Driving
i-ACTIVSENSE
Distance-between-vehicles guidelines
Indication on display
*1 The distance between vehicles differs depending on vehicle speed.
4-112
*1
Distance between vehicles
guidelines
(During travel at about 40km/h
(25 mph))
About 25 m (82 ft)
About 20 m (66 ft)
About 15 m (49 ft)
About 10 m (32 ft)
About 10 m (32 ft) or less
Distance between vehicles
guidelines
(During travel at about 80km/h
(50 mph))
About 50 m (164 ft)
About 40 m (131 ft)
About 30 m (98 ft)
About 20 m (65 ft)
About 20 m (65 ft) or less