Detroit ? So you think junior is a little too lead-footed when he drives the family car? Starting next year, Ford Motor Co. will give you the power to do something about it.

The company will roll out a new feature on many 2010 models that can limit teen drivers to 80 mph, using a computer chip in the key.

The feature, called “MyKey,” will be standard on an unspecified number of Ford models when the 2010 cars and trucks come out late next summer. The feature will spread to the entire Ford, Lincoln and Mercury lineup as models are updated, spokesman Wes Sherwood said.

In addition to speed limits, MyKey also will limit the volume of the audio system, and it will sound a six-second chime every minute if seat belts are not fastened.

Parents also have the option of having the car sound a chime if the teen exceeds 45, 55 or 65 mph.

Ford said its market research shows 75 percent of parents like the speed and audio limits, but as one might expect, 67 percent of teens don’t like them.

More than 5,000 U.S. teens die each year in car crashes. The rate of crashes, fatal and nonfatal, per mile driven for 16-year-old drivers is almost 10 times the rate for drivers ages 30 to 59, according to the National Highway Traffic Safety Administration.

Several U.S. auto insurers have begun offering in-car cameras or global positioning equipment to help parents monitor their teens’ driving behavior, in the hope of reducing the number of crashes.