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Citroën CX: hydraulic suspension, engines and what to know before buying
The Citroën CX is a large front-wheel-drive car introduced in 1974, distinguished by its hydraulic suspension and aerodynamic body. In this article, we review its versions, engines, and what you need to know when buying a used CX.
The CX in brief
The CX replaced the Citroën DS and was produced until 1991. In 1975, it was named the European Car of the Year. Its design features a long, aerodynamic body, with the standout feature being the hydraulic suspension, ensuring exceptional comfort.
Both sedan and estate (Break) body styles were offered. First-generation cars had a unique dashboard with rotating dials and control 'satellites,' which sparked debates but are now valued as a distinctive feature.
Which version to choose
The first series (up to 1985) is praised for its original interior and classic looks. They often have simpler electronics but require more attention to the hydraulics.
The second series (from 1985) received a revised dashboard, plastic bumpers, and improved interior trim. It's more suited to daily use, and the best-preserved cars are often from later years.
Engines and gearboxes
CX engines include four-cylinder petrol (roughly 2.0–2.5 L) and diesel units, including turbo versions. The GTi had a fuel-injected engine, and later came the turbo GTi. Power ranged from around 100 to approximately 170 HP.
Gearbox — manual (four or five speeds) or automatic. The hydraulic system and engine require a Citroën specialist with experience.
What to check when buying a used CX
Most importantly — the hydropneumatic system: check if the car lifts properly after starting, if there are no fluid leaks, and if the suspension struts haven't seized. The green LHM fluid needs changing according to the schedule.
Also, inspect the bodywork — especially the sills, wheel arches, and the underside of the body. Check the braking system, power steering (DIRAVI), air conditioning, and electrical equipment. Some parts can be hard to find, so it's worth reaching out to Citroën clubs.
Trim levels
Names and equipment vary by market and year; we list the most commonly found trim levels in Europe.
CX 2000 / 2200
1974–1985The initial petrol versions in the first series.
- Approximately a 2.0–2.2-litre four-cylinder engine
- Hydropneumatic suspension
- Often — simpler interior trim
CX Pallas
First seriesA more comfortable, higher-class version.
- Better interior trim
- Additional comfort features
- Often — leather or cloth seats
CX GTi
from 1977A sportier version with fuel injection
- More powerful injection engine
- Sportier setup
- Quicker acceleration
CX Turbo
from 1984Most powerful petrol version or turbo diesel
- Turbo engine
- Better acceleration
- Rarer version
CX Prestige
long wheelbaseLuxury long-wheelbase version
- Longer wheelbase and more space
- More luxurious trim
- Rarer version
CX Break
estateA practical estate body.
- Large boot
- The same hydropneumatic suspension
- Ideal for families and travellers
CX version comparison
| 2000 / 2200 | Pallas | GTi | Turbo | |
|---|---|---|---|---|
| Who it's for | For a smooth ride | For comfort | For dynamic driving | For spirited driving |
| Engine | Around 2.0–2.2 litres | Around 2.0–2.5 litres | Around 2.5 litres, turbocharged | Turbo |
| Power (approx) | 100–115 AG | 100–140 AG | Around 138 AG | Around 170 AG |
| Ease of maintenance | Average | Average | Difficult | Difficult |
| Price in the used market (relatively) | € | €€ | €€ | €€€ |
For most buyers, the best choice is a well-maintained CX with checked hydraulics. The GTi and Turbo versions are for enthusiasts who prioritise performance.
Pros
- Unrivalled comfort thanks to the hydropneumatic suspension
- Unique, aerodynamic design
- Spacious interior and estate version
- Reliability and classic status
Cons
- Hydraulic systems require maintenance
- Rust and wear on many parts
- Finding parts can take time
Frequently asked questions
What makes the Citroën CX special?
It's renowned for its hydropneumatic suspension, aerodynamic body, and long production run. It was named European Car of the Year in 1975.
What problems does the hydropneumatic suspension have?
Common issues include fluid leaks and worn-out spheres (shock absorbers). Properly maintained, the suspension lasts a long time and ensures exceptional comfort.
Is the CX suitable for daily use?
If well-maintained, yes, as it's comfortable and spacious. However, due to its age and complex hydraulics, it requires meticulous servicing.
Updated 2026-10-19 · Trim levels and equipment vary by market and model year — check the equipment of the specific car. · Translated automatically
