Other safety features include optional electronic stability control ($250) and a tire-pressure monitor ($250).

An electronic stability control, which helps to prevent skids, is newly standard on all Elements, as are tire-pressure monitors.

The tire-pressure monitor was dropped.

Buyers of the 3s can add 17-inch alloy wheels with wider, lower-profile tires, xenon headlamps and a tire-pressure monitor.

First, each driver is required to do a pre-trip inspection, so it is beneficial if the tire-pressure monitor has an indicator that can be read without tools.

So tire-pressure monitors are mandatory on cars with such tires, to make sure drivers don't roll on blithely until the tires fail entirely.

Chevy also offers a traction control and tire-pressure monitor that can tell if one 16-inch tire is rolling slower than the others.

The Sienna comes standard with anti-lock braking, brake assist, electronic brakeforce distribution, traction control and a tire-pressure monitor.

Also standard was a tire-pressure monitor.

Added midyear was a standard tire-pressure monitor.