Buying a used Citroën with hydropneumatic suspension does not have to be a lottery. With the right preparation you can assess the condition of a vehicle before it even reaches the workshop. This guide was written by Piotr Jeździkowski — a mechanic specialising in these makes for over thirty years.
ORGA number — determining the production date
PSA vehicles produced after 1 January 1980 carry a 4- or 5-digit ORGA number that allows the production date to be precisely established. The production date allows you to verify whether the mileage is plausible and which scheduled services should already have been carried out.
ORGA Calculator — use the production date calculator which includes a location table for all Citroën and PSA models.
Pre-purchase check list
Before getting into the car, carry out a thorough exterior inspection. Many things are visible to the naked eye.
Tow bar
If the car has a tow bar, think carefully before buying. Towing places stress on the hydraulic system, brakes and engine in ways that are not visible in the service history. A tow bar is not a disqualifier, but grounds for extra caution.
Tyres
- Check for uneven tread wear — indicates geometry problems or evidence of a repaired accident.
- Also inspect the spare tyre — a neglected spare says a lot about how the owner cared for the whole car.
Glass and lights
- Air bubbles along the edge of the windscreen — a sign of delaminating adhesive; replacement is inevitable.
- Deep scratches on glass — impair night driving.
- Check lamp glass condition — cracks or moisture inside mean additional cost.
Paint and bodywork
- Assess the paint from a few metres — shade differences between panels almost always mean post-accident bodywork.
- Panel gaps should be even along their full length. Uneven gaps suggest bodywork deformation.
- On older cars doors may sag slightly — adjustment needed, but not a disqualifier.
Rust and corrosion
Visible rust on sills, floor or underbody is a warning sign. It may indicate poor bodywork repair or — worse — flood damage. Flood damage has a devastating effect on the electrical installation, with consequences that emerge years later.
Body geometry
If you have any doubts about the body's alignment, commission a laser geometry check (approx. 100 PLN). It can reveal hidden accident damage invisible to the naked eye.
Hydraulic suspension test
The following procedure takes a few minutes and allows assessment of key system components. Carry it out before the test drive.
Step 1 — vehicle rising
Start the engine and set the height lever to the maximum position. The car should rise smoothly to full working height within 30–60 seconds. Jerky movement or failure to rise indicates a serious fault.
Step 2 — brake distributor
Switch off the engine. Press the brake pedal repeatedly. If the car drops after a few presses, the brake distributor is faulty. If it drops immediately — strongly consider walking away.
Step 3 — front bumper test
Start the engine, set to normal height, get out. Press firmly on the front bumper — the front should drop about 10 cm and return smoothly without delay. The pump should not be heard working intensively.
Note: If the front does not return to the resting position — the front height corrector is probably faulty.
Step 4 — rear suspension test
Repeat step 3 at the rear. If the rear works differently from the front or the pump runs very frequently — possible worn pressure accumulator or system leaks.
Step 5 — pressure accumulator test
Lower the car to the parking position, switch off the engine, move the lever to the service position. The car should slowly rise with the engine off. If it does not — the accumulator needs replacement.
Test drive and diagnostics
Absolute rule: If the seller refuses a test drive, a workshop visit or a geometry check — walk away, even if the price seems attractive. An honest seller never refuses a check.
During the test drive pay attention to:
- Smooth ride height changes during acceleration and braking
- Absence of suspension noises — knocks, scraping, whistling
- Steering behaviour — play, juddering, uneven assistance
- Engine operation — juddering, exhaust smoke, temperature, noises
If you are not familiar with Citroëns, bring someone experienced or arrange an inspection at a specialist workshop. A pre-purchase inspection typically costs 100–200 PLN — far less than the repairs that may emerge weeks after purchase.
Price negotiation
The standard discount when buying a used car is around 10% of the asking price. Every identified fault or required repair is grounds for a further reduction.
Additional equipment — alarm, radio, speakers, electric mirrors — should not affect the final price of the vehicle. You are buying a technical condition, not gadgets.
If everything checks out — do not show your satisfaction too obviously. A pleased buyer loses negotiating leverage.
