Car is a '93 Mk1 Gold Cabriolet.
I have this problem where the starter motor will sound like its struggling to turn the engine over. It sounds very much like a dead or dying battery but this is not the case - battery seems fine and alternator is giving it enough juice.
The odd thing is this happens very sporadically. The car can start fine, be driven to work, then have this issue starting in the afternoon, be driven again for 5 mins, then start again fine. I would say 1 in 30 starts has this problem.
Each time, so far, I've been able to get the car going by cranking it (slowly) until the engine catches.
The car behaves normally otherwise.
Is this the symptoms of a dying starter motor?