So when I take the Twingo in, any guesses as to what I might expect the bloke to tinker with under the bonnet

The timing chain was redone at 40k, so I am thinking that it doesn't leave much to fix - except may 'tuning' (is that even done on fuel injection cars?), replace brake fluid (which I could do myself), test the battery etc.
Any ideas ? There's nothing in the Haynes manual or the log book to say what they will check for.
Taa in advance!