Nearly 100 hire bikes in Belfast have been stolen since the city council launched the scheme three years ago.
The BBC reports the scheme, which began in April 2015, has cost the council £44,000 so far in either replacing or repairing the hire bikes.
Figures obtained by the broadcaster also reveal that 101 cycles have been vandalised in the first four months of 2018 alone.
The Belfast Bike scheme has 450 bikes at 40 docking stations around the city with 5,138 active annual members.
More than 400,000 journeys have been made during the scheme so far.
An annual subscription costs £25 per year, a three-day memberships is £6 or you can pay as you go.
However, the scheme has suffered a number of attacks on bikes, ranging from a broken light to a damaged frame.
During the first year of operations, vandalism and theft cost Belfast City Council £1,800.
This rose dramatically to £19,000 in its second year and £22,700 last year.