2005 Citroën C6 problems
The 2005 Citroën C6 was sold with an engine that we have documented: the TDV6 / SDV6. The TDV6 / SDV6 has serious faults that affect the cars of that year. Outside the engine, 4 documented faults affect 2005 cars, such as jerking and hydraulic block faults in the Citroën C6 six-speed automatic gearbox.
2005 Citroën C6 score: acceptable reliability
Calculated using only 6 documented faults and their sources: the most serious and frequent faults weigh more. How it is calculated
- Engine5.72 faults
- Gearbox7.91 fault
- Suspension8.11 fault and ITV (technical inspection)
- Brakes8.71 fault and ITV (technical inspection)
- Tyres and wheels10.0No documented faults
- Steering8.4Technical inspection (ITV) only: 0.6 times the defects normal for its age
- Electrical system8.61 fault
- Headlights and lights7.3Technical inspection (ITV) only: 1.1 times the defects normal for its age
- Electronics and infotainment10.0No documented faults
- Climate control10.0No documented faults
- Bodywork and interior7.9Technical inspection (ITV) only: 0.8 times the defects normal for its age
- Airbags and safety10.0No documented faults
TDV6 / SDV6 engine in the 2005 Citroën C6
Names: 2.7 HDi V6
- With caution
2.7 TDV6 (276DT/DT17, 2004-2010)
190–200 hp · 276DT, DT17
You need to verify that the belt and oil pump have been replaced with the improved part.[2][3]
Faults that affect 2005 cars
- Critical severityFrequency: OccasionalLubricationCrankshaft breakage and spinning main bearing shellsOn the TDV6/SDV6 in the Discovery 3 and 4, Range Rover and Range Rover Sport, crankshaft failures have been documented caused by main bearing shells that are badly seated or that spin; the engine can seize and needs replacing or rebuilding.
- Critical severityFrequency: OccasionalTimingBroken oil pump housing and timing belt jumping on the 2.7On the 2.7 TDV6 the belt tensioner is bolted to the oil pump housing; if that part gives way, the belt jumps and the engine, an interference design, can be destroyed. Specialists fit the improved pump along with the belt.
Faults outside the engine in the 2005 Citroën C6
- High severityFrequency: OccasionalGearbox and clutchJerking and hydraulic block faults in the Citroën C6 six-speed automatic gearboxAccording to fiches-auto.fr, 23 of 151 C6 owner reports cite six-speed automatic gearbox faults: jerking, hesitation when changing gear and locking in P; one case puts the hydraulic block at around €2,200.
- Medium severityFrequency: OccasionalSuspensionHydractive suspension faults on the Citroën C6: leaks, height sensors and spheresAccording to the fiches-auto.fr owner reports, 16 of 151 C6 owners cite Hydractive suspension problems: leaks, faulty height sensors, incorrect ride height and excessive firmness; repairs of around €350 to €1,090 depending on the case.
- Medium severityFrequency: OccasionalElectrical systemAlternator failure and battery problems on the Citroën C6According to fiches-auto.fr, 12 of 151 C6 owner reports cite alternator failures, with repairs of around €600 to €800, and another 6 talk about battery problems.
- Low severityFrequency: RareBrakesABS sensor failure on the Citroën C6According to fiches-auto.fr, 9 of 151 C6 owner reports cite ABS sensor failures, with repairs of around €400 per case.
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Frequently asked questions
Is the 2005 Citroën C6 reliable?
The 2005 Citroën C6 was sold with an engine that we have documented: the TDV6 / SDV6. The TDV6 / SDV6 has serious faults that affect the cars of that year. Outside the engine, 4 documented faults affect 2005 cars, such as jerking and hydraulic block faults in the Citroën C6 six-speed automatic gearbox.
What is the best year for the Citroën C6?
According to our score, the best are 2012 and 2011 (7.0/10). The year with the worst score is 2005 (6.3/10). Each year's score counts only the engines sold that year and the faults that affect those cars.
What faults does the 2005 Citroën C6 have?
The most important ones documented for 2005 cars are: crankshaft breakage and spinning main bearing shells (TDV6 / SDV6, critical severity), broken oil pump housing and timing belt jumping on the 2.7 (TDV6 / SDV6, critical severity), jerking and hydraulic block faults in the Citroën C6 six-speed automatic gearbox (gearbox and clutch, high severity), hydractive suspension faults on the Citroën C6: leaks, height sensors and spheres (suspension, medium severity) and alternator failure and battery problems on the Citroën C6 (electrical system, medium severity).
Own a 2005 Citroën C6? Tell us what faults you have had and at how many kilometres. Report your fault.
Sources
Every fact on this page links to its source. If you find an error, let us know.
- Ford AJD-V6/PSA DT17 engineWikipedia · Other source · consulted 5 October 2026
- TdV6 Timing BeltLes Richmond Automotive (lrautomotive.com.au) · Technical documentation · consulted 5 October 2026
- Land Rover 2.7 TDV6 Timing Belt Replacement GuideBudget Parts (roverparts.eu) · Technical documentation · consulted 5 October 2026