When they are properly installed, Daytime Running Lights are a good thing, such as the Fiat 500's separate round lights, Mercedes-Benz and Porsche's below bumper level, or Citroen's, vertical on flanks. But when they are badly or fancifully installed, especially inside the headlight unit, they are not good at all. One LED failure in a headlight unit could cost you £500 for a whole new headlight unit. At least the LEDs in Jaguar ‘J blade’ DRLs dim when the indicators are flashing so the indicators are not obscured.