Automotive sites:
* Auto.ru: https://auto.ru/cars/used/sale/citroen/c4/?gearbox=2
* Avito: https://www.avito.ru/moskva/avtomobili/citroen/c4-ASgBAQICAUSSA8YQAUDKBBIsg8A-ASgBAgICA4SWBTQ?gearbox_id=5454
* Drom.ru: https://www.drom.ru/catalog/citroen/c4/2012/
Car showrooms and dealers:
* Automir Citroen (Moscow): https://citroen-avtomir.ru/used/
* Inkom-Auto Citroen (Moscow): https://incom-auto-citroen.ru/used-cars/
* Citroen Center Warsawka (Moscow): https://www.citroen-centr-warszawka.ru/used/
Recommendations:
* Before purchasing, carefully inspect the car and check its technical condition.
* Check vehicle history using VIN decoder.
* Consider having your vehicle diagnosed by an independent workshop.
* Check the legal purity of the transaction by contacting a notary or law firm.