Citroen C6.
What to Check Before Buying.

The Citroen C6 is a distinctive French luxury saloon produced from 2005 to 2012, known for its unique styling and exceptional ride comfort courtesy of the hydropneumatic suspension. Originally marketed as an executive car, most examples today are cherished by enthusiasts who value quirky engineering over mass-market appeal. This complexity means thorough pre-purchase checks are essential, particularly around the sophisticated suspension system and electronic components that can prove expensive to repair.

The average used car has 3+ known model faults the seller won't mention.