Great Ashikawa. Thanks for writing down. Do share your observations on average and please elaborate on "servotronic steering" what is it ? Is it like steering gets heavier with the speed ?
Servotronic
Servotronic offers true speed-dependent power steering, in which the amount of servo assist depends on road speed, and thus provides even more comfort for the driver. The amount of power assist is greatest at low speeds, for example when parking the car. The greater assist makes it easier to maneuver the car. At higher speeds, an electronic sensing system gradually reduces the level of power assist. In this way, the driver can control the car even more precisely than with conventional power steering. Servotronic is used by a number of automakers, including Audi, General Motors, BMW, Volkswagen, Volvo, SEAT and Porsche. Servotronic is a trademark of AM General Corp.(source: en wiki)
Speed Dependent Power Steering
The speed-dependent control of the power steering enhances manoeuvrability and comfort, consequently boosting safety. Power assistance is at its highest level at low speeds, when manoeuvring for example. This means that the car is very easy to handle. At higher speeds, an electronic sensing system gradually reduces the level of power assistance. In this way, the driver can control the car at high speed and keep it on the chosen line even more accurately than with conventional power steering.(Source: VW india)