In 1999, automatic headlamps were added, and the Handling Group removed the speed limiter. In 2000, an interlock was added to prevent shifting the transmission from Park unless the brake pedal was pressed; and tether anchors were added to the rear shelf for child seats. The 2001 model year brought more changes, with an optional luxury group that included an automatic dimming driver-side mirror and supplemental side airbags. A more advanced EVIC (trip computer) was made optional. The 300M also received new jeweled taillights.