Engine is taking a while longer to turn over, however, when I put key to 'on' for a few seconds before starting the car it seems to start when ignition is turned straight after . Would this be a spark plug issue or a starter motor issue? Battery been replaced recently which I thought may help but hasn't. Not sure if its just the cold weather but seems to be getting worse possibly?
Got a petrol 1.6 astra twintop 07 plate 40k on clock.
Any help appreciated.