BMW 3-Series in-depth

New iDrive controller

This new iDrive controller is present on all sat nav equipped 3-Series models. Beware though, opt for the cheaper Business Navigation system and you'll have to put up with a mind-bendingly bad first-gen iDrive system. The considerably more expensive Professional Nav system not only features the new iDrive, but also has a bigger screen, 80GB hard disk for faster navigation in 3D, as well as music ripping, TV receivers and voice control.

For an in-depth look at the new generation iDrive system, check out CNET Australia's extensive guide and review.

(Credit: Derek Fung/CNET Australia)