One of the most popular (and expensive, and depending on who you talk to, wasteful) newer features in new car packages is the built-in navigation system. Holding out for nav can boost your bottom line by several thousand dollars, so I thought we’d take a look at a popular new hybrid – the Toyota Prius – and see how owners felt about their built-in systems, and what aftermarket products were recommended.

Now you can get help leasing the following hybrid cars and SUVs: