Citroen C6 2006-2012 Review: Comfort, Costs, Buying Tips
Explore the unique Citroen C6 executive saloon: bold design, plush highway ride, powerful diesel, but high costs and quirks.
The Citroen C6, produced from 2006 to 2012, stands out as a daring entry in the executive car segment. This full-size saloon combined avant-garde styling with innovative engineering, aiming to rival German heavyweights like BMW and Mercedes. Its hydropneumatic suspension promised supreme comfort, while a robust V6 diesel delivered effortless power. Yet, despite its appeal, the C6 faced challenges with ownership costs and market reception. This review delves into its design, performance, practicality, and long-term viability, drawing from real-world tests and owner feedback.
Distinctive Exterior Design and Aerodynamics
The C6’s exterior is its most memorable feature, featuring a fastback silhouette with a steeply raked rear roofline and pronounced front overhang. This design prioritized low drag, achieving a coefficient of drag around 0.27, which aided fuel efficiency and high-speed stability. The elongated bonnet and slim LED taillights gave it a futuristic look, often compared to concept cars rather than production saloons. Available in trims like Dynamique and Exclusive, it came with 17-inch alloys standard, upgradable to 19-inch options for a sportier stance.
While polarizing, the styling aged gracefully, maintaining a premium presence. Body colors ranged from metallic silvers to deep blues, enhancing its elegant profile. The frameless windows and subtle chrome accents added sophistication, making it a head-turner on motorways.
Advanced Hydractive Suspension System
Central to the C6’s character is Citroen’s Hydractive 3+ suspension, an evolution of hydropneumatic technology. This self-leveling system uses fluid and gas spheres to absorb imperfections, delivering a pillow-like ride on smooth A-roads and motorways. In comfort mode, it filters out undulations seamlessly, allowing relaxed cruising at 70mph or beyond.
However, on pockmarked urban roads or sharp bumps, the setup can feel unsettled, transmitting jarring impacts. Sport mode firms things up for cornering, reducing body roll, but the car’s 1,800kg weight demands careful inputs. Owners praise its wafting prowess for long journeys, though maintenance of the complex hydraulics requires specialist knowledge.
Engine Lineup: Power and Efficiency Breakdown
The C6 offered two main powertrains: a 3.0-liter V6 diesel and a 3.0-liter V6 petrol. The diesel, producing 235bhp and 369lb ft of torque, paired with a six-speed automatic, excelled in refinement. It accelerated from 0-62mph in 8.9 seconds, topping 152mph, with strong in-gear pull ideal for overtaking.
| Engine | Power | Torque | 0-62mph | Top Speed | Economy (mpg) | CO2 (g/km) |
|---|---|---|---|---|---|---|
| 3.0 V6 Diesel | 235bhp | 369lb ft | 8.9s | 152mph | 32-39 | 190 |
| 3.0 V6 Petrol | 215bhp | 183lb ft | 8.7s | 143mph | 25-28 | 225+ |
The petrol unit felt thirstier and less torquey, suiting shorter trips but lagging in refinement. Diesel models achieved near 40mpg on motorways, though real-world figures hovered at 32mpg combined. High CO2 emissions (190g/km) incurred steep road taxes, a drawback in eco-conscious markets.
Interior Comfort and Luxurious Appointments
Inside, the C6 enveloped occupants in a airy cabin with a panoramic glass roof flooding light into the space. Leather upholstery, wood veneers, and soft-touch materials created a premium ambiance. Front seats featured massage functions and extensive adjustments, while rear passengers enjoyed limo-like legroom and individual climate zones.
- Key interior highlights: Dual-zone climate control, heated/ventilated seats, 10-speaker audio system.
- Rear bench slides forward/back for flexibility, with fold-down armrest and cupholders.
- Digital instrument cluster and sat-nav integrated seamlessly.
Boot space measured 427 liters, expandable via 60/40 split-folding seats, though the fastback limited loading height. Ergonomics had quirks, like a high scuttle blocking visibility and fiddly sat-nav controls.
Performance on Road: Strengths and Limitations
Highway driving showcased the C6 at its best: silent cruising, stable tracking, and ample power reserves. The auto gearbox shifted smoothly, rarely hunting in traffic. Braking, however, disappointed with long stops from speed, lacking the bite of rivals.
Handling prioritized poise over agility; wide tires provided grip, but the lofty ride height induced floatiness in bends. Steering was light and accurate, though lacking feedback. Noise insulation impressed, with diesel clatter muted effectively.
Equipment Levels and Standard Features
Even entry-level models brimmed with kit: xenon headlights, parking sensors, cruise control, and Bluetooth. Higher trims added lane departure warning, night vision, and a rear entertainment system. Citroen’s three-year servicing at £499 (every 20,000 miles) sweetened business deals.
Trim comparison:
- Dynamique: 17-inch wheels, leather, nav.
- Exclusive: 19-inch alloys, massage seats, premium audio.
- Lignage: Top-spec with hydractive tweaks and unique styling.
Reliability, Maintenance, and Ownership Costs
Reliability proved mixed; the V6 diesel was durable if serviced promptly, but hydractive components like spheres and pumps failed expensively post-warranty (repairs £1,000+). Electronics and air-con posed issues, compounded by sparse dealer networks.
Depreciation hit hardest: new prices £40,000 plummeted to under 33% retained value after three years. Fuel and tax bills added up, with insurance in group 24-26. Used examples now offer bargains under £5,000, appealing to enthusiasts.
Market Position and Buying Advice
The C6 underperformed commercially against Audi A8 or Jaguar XJ, selling fewer than 5,000 UK units due to badge snobbery and economics. Today, it’s a cult classic for those valuing comfort over conformity. Seek full service history, check suspension fluid levels, and budget for tires (£200/set).
Pros:
- Exceptional motorway refinement.
- Unique, eye-catching design.
- Spacious, well-equipped interior.
- Strong diesel performance.
Cons:
- Severe depreciation.
- High running costs.
- Flawed ride on poor roads.
- Potential repair bills.
Common Questions About the Citroen C6
What makes the C6’s suspension special?
Hydractive 3+ provides adjustable damping and self-leveling, excelling on highways but jarring on bumps.
Is the diesel engine reliable?
Yes, with proper maintenance, though complex and costly to fix.
How does fuel economy compare?
Diesel averages 32mpg real-world, petrol around 25mpg.
Best trim for value?
Dynamique offers most features for used buyers.
Alternatives?
Jaguar XJ, Renault Vel Satis, or used Mercedes S-Class.
References
- Citroen C6 (2006-2012) review — Auto Express. 2012-05-05. https://www.autoexpress.co.uk/citroen/c6/20866/2006-2012-saloon
- Citroen C6 review — Auto Express. 2006-12-29. https://www.autoexpress.co.uk/citroen/c6
- Citroen C6 (2006-2012) Owners’ Reviews — Honest John. N/A. https://www.honestjohn.co.uk/owner-reviews/citroen/c6-2006/?review=2033
- Buying A Citroën C6 (2006-2012) For Any Budget — YouTube (Carfection). N/A. https://www.youtube.com/watch?v=G94OcTwy08g
- The Citroen C6 is a Fascinating French Luxury Car — YouTube. N/A. https://www.youtube.com/watch?v=sqrxmRclQEA
- Citroen C6 (2005-2014) — Car and Driving. N/A. https://www.caranddriving.com/road-test-video-review.aspx?id=201442
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