Citroën C6 TDV6 / SDV6 problems
The Citroën C6 used the TDV6 / SDV6 from 2005 to 2010 (2.7 HDi V6). 2 documented faults affect it; the most important is “crankshaft breakage and spinning main bearing shells” (critical severity, occasional). Our verdict: “With caution”. Among the documented engines of the Citroën C6, the safest option is the 2.2 HDi.
Engine score on this car
5.7 out of 10Acceptable reliability
Only counting the faults that affect the versions and years of the C6. How we calculate it
Overall score for the Citroën C6
6.5 out of 10Acceptable reliability
Engines, gearbox, suspension, brakes, electronics and the rest of the car. See breakdown
Ford-PSA AJD-V6 / DT17: 2.7 TDV6 (276DT) and 3.0 TDV6/SDV6 (306DT) · Diesel
- In the C6
- 2005–2010[1]
- Name
- 2.7 HDi V6
- Faults that affect it
- 2 · all of high or critical severity
Verdict for the version it uses
2.7 TDV6 (276DT/DT17, 2004-2010)2004–2010 · 190–200 hp · 276DT, DT17
With cautionYou need to verify that the belt and oil pump have been replaced with the improved part.[2][3]
Faults that affect the C6
Only those that affect the versions and years that this car used. The TDV6 / SDV6 has 3 documented faults in total.
- 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.
What to check before buying a used Citroën C6 TDV6 / SDV6
Each point comes from a documented fault that affects this car. You can tick them off as you inspect it.
If it has the TDV6 / SDV6 (2005–2010)
Crankshaft breakage and spinning main bearing shells
Critical severityBroken oil pump housing and timing belt jumping on the 2.7
Critical severityOther engines and gearboxes of the Citroën C6
Score for each one with the faults that affect this car, from best to worst.
Faults of the Citroën C6 outside the engine
Suspension, brakes, electronics and the rest of the car: they occur with any engine.
- 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.
Buying a Citroën C6 TDV6 / SDV6?
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Frequently asked questions
Is the Citroën C6 TDV6 / SDV6 reliable?
The Citroën C6 used the TDV6 / SDV6 from 2005 to 2010 (2.7 HDi V6). 2 documented faults affect it; the most important is “crankshaft breakage and spinning main bearing shells” (critical severity, occasional). Our verdict: “With caution”. Among the documented engines of the Citroën C6, the safest option is the 2.2 HDi.
What faults does the Citroën C6 TDV6 / SDV6 have?
The documented ones that affect this car are: crankshaft breakage and spinning main bearing shells (critical severity) and broken oil pump housing and timing belt jumping on the 2.7 (critical severity).
Which engine should you choose for the Citroën C6?
None has a «Buy» verdict; the safest option is the 2.2 HDi, with a «With caution» verdict.
Own a Citroën C6 TDV6 / SDV6? 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
- Land Rover & Jaguar SDV6/TDV6 Crankshaft RepairJLR Engines · Technical documentation · consulted 5 October 2026
- Land Rover Discovery TDV6 engine failures making headlinesLandyOnline · Other source · published October 2015 · consulted 5 October 2026
- TDV6 crankshaft failure (hilo)RRSPORT.CO.UK · Owners' forum · consulted 5 October 2026