The car also has to emit warning sounds when reversing at speeds of up to 6 km/h. Here, too, the plug-in hybrids’ warning noise imitates a combustion engine, but with different tones notifying pedestrians that the car is going backwards.
Creating a warning sound audio “signature” is something of an opportunity for carmakers, as well as an engineering challenge. Although the legislation prescribes which frequency bands the sound should use and at what volume (to an overall level of at least 56 decibels), designers can be a bit creative and adapt the sound to the given car’s character. “Plug-in hybrids get a sound that imitates a combustion engine so that everything matches,” Orendáš says, explaining the choice used in ŠKODA cars already heading out onto the roads.
The sporty OCTAVIA RS iV, for example, will have a sound character the same as standard OCTAVIA iV and SUPERB iV models. “Given the model’s specific design feature, however, the sporty character of the sound only comes into play during dynamic driving away from urban roads,” Orendáš points out.
ŠKODA OCTAVIA RS iV