Used car guide · 1978–1979

Citroen GS buying guide: what to check

What goes wrong on a used Citroen GS, year by year: known faults from UK buying guides and what to check before you buy one.

54on the UK register

Pick the year

Most years have their own guide. The year is when the car was first registered (it’s on the logbook, or check the reg below).

19791978

What usually goes wrong with a Citroen GS?

We haven’t found widely reported faults for the Citroen GS in the UK buying guides we use yet. That doesn’t mean it has none, so check the car carefully.

Looking at a Citroen GS?

Check the actual car: its own MOT history and what to ask the seller. Free, no sign-up.

Where this comes from: MOT figures are the DVSA’s anonymised results for every MOT test done in Great Britain during 2023–2025, grouped by the year each car was first registered. How many are on the road is from the Department for Transport’s vehicle licensing statistics. Known faults are from UK buying guides, in our own words, with links. How we score