De C6 van het Franse Citroën was een 4-deurs sedan en was op de markt sinds 2006. De productie is sinds 2013 stopgezet.
| Type | Motor | Transmissie | Inhoud |
| 3.0i V6 | benzine | seq. automaat 6 | 2.9 liter |
| 3.0i V6 Lignage | benzine | seq. automaat 6 | 2.9 liter |
| 3.0i V6 Ligne Business | benzine | seq. automaat 6 | 2.9 liter |
| 3.0i V6 Exclusive | benzine | seq. automaat 6 | 2.9 liter |
| 2.2 HDiF | diesel | handm. 6 | 2.2 liter |
| 2.2 HDiF Lignage | diesel | handm. 6 | 2.2 liter |
| 2.2 HDiF Ligne Business | diesel | handm. 6 | 2.2 liter |
| 2.2 HDiF Exclusive | diesel | handm. 6 | 2.2 liter |
| 2.2 HDiF | diesel | seq. automaat 6 | 2.2 liter |
| 2.2 HDiF Serie Speciale | diesel | seq. automaat 6 | 2.2 liter |
| 2.2 HDiF Ligne Business | diesel | seq. automaat 6 | 2.2 liter |
| 2.7 HDiF V6 | diesel | seq. automaat 6 | 2.7 liter |
| 2.7 HDiF V6 Lignage | diesel | seq. automaat 6 | 2.7 liter |
| 2.7 HDiF V6 Ligne Business | diesel | seq. automaat 6 | 2.7 liter |
| 2.7 HDiF V6 Exclusive | diesel | seq. automaat 6 | 2.7 liter |
| 3.0 HDiF V6 Ligne Business | diesel | seq. automaat 6 | 3.0 liter |
| 3.0 HDiF V6 Exclusive | diesel | seq. automaat 6 | 3.0 liter |