[Toyota Yaris] old model vs. new model

Hello Toyota driver, my colleague wants to get a new car soon and is already almost certain that it will be a Toyota Yaris. Now he can’t quite decide, should he take the old model, or the new one? Price-wise, the old run-out model is of course more attractive and it may be more mature than the new Yaris. The new Yaris is a bit more expensive, but looks nicer. Now I would like to know from you what the innovations or improvements are m new yaris are compared to the old yaris and what advantages the new one has. Is it worth getting the new one, or is it not yet so mature? Greetings raptor99