Plan d’maintenance Citroen C6 II

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📖Citroën C6 II: Chinese-market executive saloon focused on luxury and Prince turbo engines

Unveiled at the 2016 Beijing Motor Show and produced exclusively in China through the Dongfeng-PSA joint venture, the second-generation Citroën C6 took a completely different path from its quirky European predecessor. Measuring nearly five metres with a formal three-box saloon profile, lavish leather upholstery and an extended wheelbase, adhering to disciplined Citroën C6 maintenance keeps its modern running gear running smoothly.

Unlike the hydraulic original, the C6 II rides on a conventional steel-sprung EMP2 platform and utilises turbocharged Prince petrol engines: the 1.6 THP (350THP) and the 1.8 THP (380THP and 400THP), paired with Aisin six-speed or eight-speed automatic gearboxes. These direct-injection units deliver refined acceleration but require diligent servicing of the timing chain tensioner and high-pressure fuel supply.

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Owner notes

The reassuring points, known weak spots and deadlines you should not let slip.

Reassuring points

Reliability

Generous five-metre executive saloon proportions offering exceptional rear-seat legroom and lounge luxury.
Conventional steel suspension architecture eliminates the maintenance complexity of older hydraulic systems.
The 1.8 THP petrol engine delivers smooth mid-range punch and quiet high-speed motorway cruising.
Comprehensive modern equipment including digital instrument cluster, Nappa leather and advanced infotainment.

Chronic weak spots

Keep an eye on

1.6 and 1.8 THP timing chain: listen for cold-start metallic chain rattle; check hydraulic chain tensioner extension.
Inlet valve carbon accumulation: inspect intake ports for carbon crusting; perform walnut blasting if hesitation occurs.
High-pressure fuel pump (HPFP): monitor rail pressure diagnostic logs for misfires or fuel delivery stutter under load.
Engine cooling system: check coolant expansion bottle, electric water pump and turbo coolant hoses for minor leaks.
Aisin automatic transmission: inspect fluid clarity and renew ATF every 60,000 km to guarantee seamless shifting.

Critical deadlines

Do not miss

Change engine oil every 10,000 km or 12 months using high-specification synthetic oil to protect the THP timing chain.
Clean intake valves of carbon deposits every 60,000 km to restore crisp throttle response and clean combustion.
Service the Aisin automatic gearbox with fresh transmission fluid every 60,000 km to preserve shift solenoids.
Inspect and test the high-pressure fuel pump at the first sign of hard starting or high-rpm power loss.

Fréquences d'maintenance recommandées

Service markers for petrol/diesel versions. Exact intervals vary by engine and model year.

Oil change

Every 15 000 km

Every 1 year

Service

Every 15 000 km

Every 1 year

Brake pads

Every 40 000 km

Every 2 years

Timing belt / chain

Every 100 000 km

Every 5 years

Battery (12 V)

Every 50 000 km

Every 4 years

Powertrains and average consumption

Average consumption from manufacturer data for the versions available in this generation.

Petrol and diesel powertrains

▾

Petrol, diesel or LPG versions. The intervals shown cover the usual mechanical jobs.

C6 II

Estimated average budget

Mid-range cost

Servicing a Citroen C6 II sits slightly above the market average (+16%).

Simple oil change~95 €

Full service~315 €

Front brake pads~150 €

Timing-belt kit~650 €

Tyres (set of 4)~470 €

* Indicative estimates for parts and labour.

Frequently asked questions about Citroen C6 II

What are the common problems on the C6 II?▾

C6 II owners should especially watch: 1.6 and 1.8 THP timing chain: listen for cold-start metallic chain rattle; check hydraulic chain tensioner extension. Inlet valve carbon accumulation: inspect intake ports for carbon crusting; perform walnut blasting if hesitation occurs. Garajo includes these watch points so you can act early.

When should you change the timing belt on a C6 II?▾

The timing belt is usually replaced every 100,000 km or 5 years on this type of engine.

Where can I find the service book for the Citroen C6 II?▾

Garajo offers a free digital service book, always up to date, with reminders and a detailed history for your Citroen C6 II.

How much does it cost to service a Citroen C6 II?▾

The service budget for a Citroen C6 II sits slightly above the market average (+16%). Allow about 315 € for a full service, for example. Garajo estimates your budget by powertrain and tracks what you actually spend, for free.

Which Citroen C6 II powertrain is best for town use?▾

This model is only available as petrol/diesel. Fuel mix: 2 petrol versions. In town, prefer the most economical, well-serviced petrol/diesel version.

Which Citroen C6 II powertrain should you choose if you mostly drive on the motorway?▾

This model is only available as petrol/diesel. Fuel mix: 2 petrol versions. On the motorway, prefer petrol/diesel versions with the best power-to-consumption compromise.

Compatible engine oil

Which engine oil for Citroen C6 II?

These links are limited to the engines of this generation when oil data is available.

0W-30 for Citroen C6 II

Capacity : 4.3 lPSA B71 2302

Unsure between two viscosities?5W-30 vs 0W-30 0W-20 vs 0W-30

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