When the car has been left for a few hours it seems very shaky when pulling away and doesn't seem to have much power to begin with. However after a minute it's fine. Also not sure if it's related but sometimes when in 4th or 5th gear it seems to get stuck in neutral when trying to shift down to 2nd or 1st.
I have had the spark plugs replaced and the machanic said if it's not that it could be the lambda sensor. However I don't want to keep spending out only to find that this doesn't solve the problem. I'm wondering whether it's something to do with the clutch?