Its definitely not good for the car. My young bloke was doing learner driver training through joblink plus, they picked him up one day in a brand new 5 speed manual toyota yarris, it had around 20 km on the clock, the young bloke said when he got back that the car drove beautifully as you would expect.. A couple of weeks later they picked him up again in the same car, and when he got back, he said that the car was completely different to drive, the wheel alignment was out from where it was, and it didnt steer as well, and the clutch was coming right up to the very last bit of the pedal stroke before it would bite, so it doesnt take long for the clutches etc to wear down when youve got learner drivers slipping/riding it all the time when theyre first trying to learn how to use it properly.