Generally, most of the time, it’s easier to arrive at Como on public transport, as driving round the city and finding parking can sometimes be a bit of a challenge. And parking in the central car park is expensive (around €2.40 per hour).
If you do decide to drive in, there are two main options for parking. If you are coming in from the western side of the lake, just after Villa Olmo, you will come to a car park on the left, with a filter lane into it. This is Via Simone Cantoni, and a good place to park if you are going to spend a few hours in the city. Just leave the car here and take the pleasant ten minute walk along the promenade towards the centre, taking in the lakeside view.
Alternatively, there is a huge subterranean car park near the front. Turn left at the roundabout as you come in to the town centre and follow the one-way system round to the right. Keep to the left lane and as the road takes you to the left you will see the sign for Parcheggio Centro Lago ahead of you. You have a choice of pedestrian exits – either direct onto the lake front, or to Via S. Elia, which leads to Piazza Volta.