See related link. Its not an Echo, but close enough.
Which bulb are you trying to change?
You cant just change the bulb, you have to change the whole headlamp.
Look in the trunk, there is cover for the brake light, remove and you will have access to change the bulb.
how to change headlamp bulb on rover 25
change bulb on ford kuga
The Aygo uses a H4 type of bulb
There is an access panel in the trunk. Its very easy to change the bulb.
you don't
look in your manual
To remove the headlamp bulb on a 1991 Chevrolet Caprice simply twist the retainer counterclockwise, remove the bulb from the headlamp capsule and unplug the bulb from the wiring connector. To install the new bulb plug it into the wiring connector, insert the bulb into the headlamp capsule and twist the retainer clockwise and you're finished.
As the climate change bulbs
you need to remove the front fascia to remove the headlamp to change the bulb