Let's explore your options:
Double DIN Stereo Upgrade Kits:
There are aftermarket double DIN stereo upgrade kits available specifically for Citroen C3 (2010-2016) and Citroen DS3 (2010-2019) models. These kits include everything you need for a seamless installation, including a fascia kit, plastic brackets, screws, blanking buttons, steering wheel control interface, antenna adapter, USB and AUX retention leads, and a universal patch lead.
The installation process involves removing the original single DIN radio, fitting the new plastic frame and fascia around the double DIN radio, and connecting the wiring harness and other components. These kits are designed to retain steering wheel audio controls and other features.
Keep in mind that dashboard modifications are required, so professional installation is recommended.
Connects2 Adapters:
If you choose an aftermarket stereo that isn't specifically designed for your Citroen C3, you can use a Connects2-style adapter to convert a compatible aftermarket stereo to control the screen above the radio (date/time, etc.) 3. This way, you can still access essential information.
For example, a Double DIN Android Auto-compatible stereo like the JVC KW-M560BT could fit in the space after removing the cubby and factory radio.
Some C3 models have a dash-mounted CD autochanger or other features that need careful handling during the upgrade.
Citroen C3 2009 Aftermarket radio upgrade - Double DIN (citroenc3owners.com)
Professional Installation:
Consult with a car audio installer or technician to choose the best solution for your specific Citroen C3 model. Regardless of the approach you take, professional installation is highly recommended.