Many things!
Gear box is a total crap.
The brake system is amazingly bad.
The car chassis is so fragile that you'll be afraid to pass over a medium road hole.
The electronics are a nightmare!
PROBLEMS AFTER PROBLEMS!
This car is a piece of trash! Awful handling! Only the engine can be excluded from these statements. Please don't try to go fast with this piece of poor metal. My advice: try another car, and do not spend your money on a Citroen AX.
Why? Please explain your point of view or it's pointless.
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