Hi everyone (me again

)
Just wondered if anyone knew why my car has become crazily lazy when i try to start it up.
I turn the key and I have to keep the key turned whilst it coughs and splutters for a few seconds and then kicks in and starts. As far as the drive goes I haven't noticed any changes.
If I turn off my car and return 10 mins later it can be hit and miss whether it starts as it should or if it coughs and splutters.
Has anyone got any suggestions please,
Many thanks Amy