New wheel bearing.
Due to warped brake discs, new brake pads and the discs have been replaced. Citroen parts are not cheap with pads and discs costing £110 including labour, and £58 for the wheel bearing.
Very quick for a little 1.0 car although it has a poor top speed. 4 speed gearbox means that the engines does rev a bit on the motorway.
Petrol lasts forever even if you drive hard.
Brake discs and pads are not expensive. I suggest you may have been ripped off. Brake pads are about 5 quid each, discs are about 7 quid each.