About this model
The second-generation Citroen C5 (internal code X7) is a D-segment saloon and estate (Tourer) produced from 2008 to 2017. It is not as common on BiH roads as the Passat or Mondeo, but there are enough of them around, especially the estate variant imported from France at affordable prices. The C5 X7 offers an exceptionally comfortable ride thanks to the optional Hydractive 3+ hydraulic suspension, a spacious interior and solid equipment. The 2.0 HDi engine (DW10BTED4, 136-163 HP) is the most popular diesel option and provides a good balance of power and fuel economy. For a typical BiH buyer, the C5 is a car that gives a lot for relatively little money, but only if you know what to watch out for. More about how we approach servicing Citroens in our workshop.
Engines and variants
This model is most commonly available in BiH with the following engines.
1.6 HDi 8v (DV6TED4, 109-112 HP): The smaller diesel, economical but lacking power for a heavy car like the C5. A common complaint is that it "won't pull", especially on the motorway with a full boot. The turbo geometry actuator is the most frequent fault on this variant. Diaphragms crack, vacuum hoses leak and the car loses power above 2500 rpm. If you want economy and don't do long trips, the 1.6 HDi is a reasonable choice, and parts for the turbo are identical to those from the Peugeot 307/308 so they are easy to source.
2.0 HDi 16v (DW10BTED4/RHF, 136-140 HP): The base 2.0 HDi and the most common choice in BiH, Euro 4/5, with a FAP filter and EOLYS additive. The crankshaft pulley (torsional vibration damper) and FAP additive are specific to this variant. The rubber element of the pulley deteriorates after 80,000-120,000 km and needs timely replacement. Wide parts availability since the same engine is used in the Peugeot 407, 508 and 3008, which keeps service costs reasonable.
2.0 HDi 16v (DW10CTED4/RHE, 150-163 HP): The more powerful 2.0 HDi with better throttle response, but higher loads on the dual-mass flywheel and clutch. Due to the greater torque (340 Nm), the dual-mass flywheel wears out faster than on the weaker version, typically at 130,000-170,000 km instead of 170,000-200,000 km. Popular with drivers who want better dynamics, but expect a somewhat pricier clutch service.
2.2 HDi Biturbo (DW12MTED4, 170-204 HP): A twin-turbo four-valve diesel, extremely powerful but rare in BiH. The biturbo system is complex and repairs are expensive. A failure of one turbocharger often means replacing both, plus specific intercooler issues. If you find a well-maintained example you get an exceptional car, but parts for the biturbo system are considerably more expensive and harder to source.
Reliability and reputation on the BiH market
The Citroen C5 X7 has a reputation in BiH as a car that can be either excellent or disastrous, depending on how well the previous owner followed the service schedule. Examples with regular servicing and manual gearboxes are surprisingly durable and cover 300,000 km without major engine block issues. The problem is that the C5 is often sold cheaply, attracting buyers who lack the budget to maintain hydraulic suspension and Citroen-specific electronics.
Parts are available. The DW10 engine shares most components with the Peugeot 407, 508 and 3008, so head gaskets, injectors and the turbocharger are easy to source. Hydraulic suspension is another story: spheres, LDS fluid and the pump are model-specific and costlier than conventional dampers. Compared to D-segment rivals (Passat B7, Mondeo Mk4, Insignia), the C5 offers the most comfort for the least money, but it needs an owner who understands that a cheap car does not mean a cheap service.
Common faults we see
From our hands-on experience, here is what comes into the workshop most often for this model.
1. Hydraulic suspension (Hydractive 3+) - spheres and pump
Symptom: The car drops to one side or sinks fully onto the subframe overnight. A "Suspension fault" message on the display, a harsh ride over bumps, you can hear the pump running but the level does not recover.
The C5 X7 uses Hydractive 3+ hydraulic suspension instead of conventional springs and dampers. The system depends on hydraulic spheres that lose pressure after 80,000-120,000 km and an electro-hydraulic pump that wears over time. Sphere degradation is gradual: the ride gets progressively harsher until the spheres lose all their elasticity. The pump works under high load and on cars with 200,000+ km it often leaks or loses pressure.
Advice: Spheres are a consumable on this car. Plan on replacing them every 80,000-100,000 km. When one sphere fails, we recommend replacing all of them at once because the rest are at the same mileage level. Check the LDS (green) fluid level regularly and never use LHM.
2. FAP filter and EOLYS additive
Symptom: FAP warning light on the dashboard, power loss, the car enters limp mode, an "Antipollution fault" message, increased fuel consumption.
The C5 2.0 HDi uses a FAP filter with an EOLYS additive injected into the fuel from a separate reservoir. The principle is similar to the DPF filter used by other manufacturers: it filters soot from exhaust gases. However, the implementation, software and additive differ from manufacturer to manufacturer. The additive lowers the soot combustion temperature and assists regeneration. Problems arise when the additive runs out (usually at 120,000-150,000 km) or when short urban trips prevent active regeneration. Without the additive, the filter clogs much faster. More about why the DPF/FAP filter clogs and how to prevent it.
Advice: Monitor the EOLYS additive level warnings. When a warning appears, top it up immediately. If you mostly drive short urban routes, once a week take the car on an open road for 20-30 minutes at 2500-3000 rpm to let the FAP regenerate. Do not switch off the engine during an active regeneration.
3. Dual-mass flywheel (DMF)
Symptom: Vibrations at idle, rattling when starting and shutting off the engine, juddering when pulling away, noise from the clutch area.
The 2.0 HDi engine with 320 Nm of torque puts heavy strain on the dual-mass flywheel. On cars with 150,000-200,000 km, the flywheel springs lose their elasticity and begin transmitting crankshaft vibrations directly to the clutch and gearbox. The problem is more pronounced on automatic versions with Aisin AT6 gearboxes.
Advice: When replacing the clutch, always check flywheel oscillation. If it exceeds the limit, replace both as a kit. That is cheaper than stripping the gearbox twice.
4. BSI module (body electronics)
Symptom: The car will not start in the morning, the battery is flat despite being new, lights turn on or off by themselves, the central locking does not respond, wipers run on their own, instruments switch off randomly.
The BSI (Boitier de Servitude Intelligent) is the central electronic module managing comfort: lights, locks, windows, alarm, wipers. On C5 units over 10 years old, the BSI module starts drawing parasitic current because it fails to enter sleep mode. Moisture or corrosion on the connectors makes things worse. The result is an overnight battery drain and unpredictable electrical behaviour. For a deeper explanation of this phenomenon, read our article on parasitic battery drain.
Advice: Before replacing the BSI, check the condition of the connectors and earth points. Often the cause is corrosion on a single pin, not the module itself. Resetting and reprogramming the BSI with a diagnostic tool resolves most issues without a replacement.
5. Power steering rack leak
Symptom: Heavy steering at low speed, oil traces under the front of the car, sluggish steering response, noises when turning to full lock.
On the C5 X7, the power steering is hydraulic and fed by the same electro-hydraulic pump as the suspension (on Hydractive versions) or has a dedicated pump (on versions with conventional suspension). The rack seals wear out after 150,000-200,000 km and begin leaking hydraulic fluid. The leak is gradual, but if ignored the pump runs dry and the repair becomes far more involved.
Advice: Check the power steering fluid level regularly. If you notice even a small oil trace under the rack, do not delay. A leak caught early can be resolved with new seals, whereas a late one means a complete rack.
6. Crankshaft pulley (torsional vibration damper)
Symptom: Vibrations at idle that transfer through the steering wheel and seats, unusual noise from the engine bay, visible wobble of the pulley, auxiliary belt snapping.
The DW10BTED4 engine has a well-known issue with the rubber damper inside the crankshaft pulley. The rubber deteriorates after 80,000-120,000 km, causing the pulley to spin eccentrically. If not replaced in time, the pulley can damage the auxiliary belt, the alternator, and even the timing belt.
Advice: Inspect the crankshaft pulley at every service. If you see any cracking of the rubber or wobble, replace it immediately. The pulley itself is a relatively cheap part, but the damage from a failure can be catastrophic.
7. EGR valve and intake manifold
Symptom: Power loss, rough running, black exhaust smoke, check engine light, uneven idle.
The EGR valve on the 2.0 HDi gets clogged with soot and oil deposits, especially when the car is used mostly for urban driving. Deposits spread into the intake manifold and restrict airflow. The problem typically appears after 100,000-150,000 km. A stuck-open EGR valve drastically reduces power, while a stuck-closed one increases NOx emissions. More about causes and prevention in our article on the EGR valve.
Advice: Clean the EGR valve and intake manifold preventively every 80,000-100,000 km. We do not recommend permanently blanking the EGR because the car will fail the emissions part of the technical inspection in BiH.
8. Aisin AT6 (AM6) automatic gearbox
Symptom: Jerking during gear changes, delayed shifts, slipping in higher gears, a "Gearbox fault" message, inability to engage certain gears.
The C5 X7 with an automatic gearbox often comes fitted with the six-speed Aisin AT6. This gearbox is generally reliable but requires an oil change every 50,000-70,000 km, which many owners skip because PSA declared the oil as lifetime fill. After 120,000-150,000 km without an oil change, the solenoid block valves get clogged and the gearbox starts to jerk.
Advice: If you are buying a C5 with an automatic, the first question is when the gearbox oil was last changed. If the answer is never, budget for a gearbox service with oil and filter replacement as your first investment.
Citroen C5 Hydractive suspension issues
C5 owners with Hydractive 3+ suspension often ask why the car sits low in the morning but rides fine once driving. The answer lies in the spheres: when nearing end of life, they lose pressure while the car is stationary. The pump raises them when you start the engine, but as soon as you turn it off the car sinks again. This is not "normal behaviour for an older car" - it is a clear signal that the spheres need replacing. It is worth knowing that the C5 X7 also came in a variant with conventional springs and dampers (lower trim levels), so if you want simpler maintenance, look for an example without the Hydractive system.
C5 2.0 HDi FAP additive EOLYS top-up
EOLYS additive does not replenish itself and is not available at every fuel station. Topping up requires access to a dedicated reservoir (located under the boot floor) and a diagnostic tool to reset the counter after refilling. The additive level sensor sometimes gives a false reading and shows a full tank when it is actually empty, so do not rely solely on the display. We recommend checking the additive level at every major service and scheduling a mandatory top-up at 120,000-150,000 km, depending on driving style.
Service and maintenance
The timing belt on the DW10BTED4 engine is replaced every 100,000-120,000 km or 10 years (whichever comes first), always together with the water pump, tensioner and idler pulleys. For BiH conditions (dusty roads and temperature swings) we recommend an interval closer to 100,000 km. Engine oil: 5W-30, ACEA C2 or C3 specification (PSA B71 2290), changed every 10,000-15,000 km or once a year depending on driving conditions (shorter interval in the city, longer on open roads). The factory-recommended 20,000-30,000 km "longlife" interval does not suit BiH conditions. FAP additive EOLYS is topped up at 120,000-150,000 km. LDS (green) hydraulic fluid should be checked at every service and topped up as needed. Never mix it with LHM fluid as that will destroy the system.
Crankshaft pulley replacement on the 2.0 HDi DW10
The crankshaft pulley on the DW10BTED4 engine should be visually inspected at every service, with preventive replacement recommended at 80,000-120,000 km depending on the state of the rubber damper. The replacement itself is relatively straightforward and does not require removing the timing belt, but if the pulley is neglected and fails, damage to the auxiliary belt and the components it drives (alternator, power steering pump, air conditioning compressor) can multiply the repair cost many times over.
Owner tips
- Use only LDS (green) hydraulic fluid for the Hydractive suspension. LHM fluid will destroy the seals and pump.
- Check history before putting down a deposit: use the chassis number to pull the full history via carVertical. International registries give you real odometer readings by date, recorded accidents, number of previous owners and theft or total-loss indicators. We consider this essential before buying any used car, especially French imports. When paying for the report you can use the code GAGA for a 20% discount.
- Once a week, take the car on an open road for 20-30 minutes at 2500-3000 rpm to let the FAP filter regenerate, especially if you mostly drive urban routes.
- Check the crankshaft pulley condition at every service. A failing rubber damper is a sneaky fault that can damage the timing belt.
- If you are buying a C5 with an automatic, your first investment should be a gearbox oil and filter change on the Aisin AT6. Do not trust the claim that the oil is lifetime.
Frequently asked questions
Is the Citroen C5 2.0 HDi reliable at 250,000 km?
The DW10BTED4 is a robust engine block that comfortably covers 300,000 km with regular maintenance. The weak spots are the hydraulic suspension, electronics and FAP filter. If those systems have been maintained, the C5 is a reliable car even at high mileages.
How much does it cost to maintain the hydraulic suspension on a C5?
The cost depends on the specific condition - get in touch for a quote. Replacing all four spheres is significantly cheaper than replacing conventional dampers on some competitors, but the pump and LDS fluid are pricier. Overall, maintaining the Hydractive suspension costs more than a conventional setup, but it delivers incomparably better comfort.
Is it worth fitting LPG to a C5 2.0 HDi?
Fitting LPG to a diesel C5 is not practical because it is a common-rail diesel with a FAP filter. LPG conversion makes sense on petrol C5 variants (1.8 16V or 2.0 16V). For petrol C5s with higher mileage, an LPG conversion is an excellent investment.
Which engine is the best choice in the Citroen C5 X7?
For BiH conditions, the 2.0 HDi at 136 or 163 HP with a manual gearbox is the safest bet. Enough power for a heavy car, wide parts availability and reasonable service costs. Avoid the 1.6 HDi (too weak for the C5) and the 2.2 HDi (expensive to maintain).
Does the C5 with an automatic gearbox cause problems?
The Aisin AT6 automatic gearbox is generally reliable if the oil is changed every 50,000-70,000 km. The issue is that most owners never do it because the manufacturer states the oil is lifetime. If you are buying a C5 with an automatic, plan a gearbox service with oil and filter replacement straight away.
What should I look for when buying a used C5 2.0 HDi?
Three things: the condition of the hydraulic suspension (does the car sink or can you hear the pump), the EOLYS additive level in the FAP system, and the operation of the complete electrical system (especially the BSI module). Check whether the car drains its battery overnight - that is a sign of a BSI problem.
Does the C5 have to have hydraulic suspension or is there a conventional version?
The C5 X7 also came with conventional springs and dampers (lower trim levels). If you want simpler maintenance, choose a variant without the Hydractive suspension. Comfort is worse but service costs are considerably lower.
If you notice any of these symptoms, drop by the workshop - it is better to check early than to pay for a costly repair.