Exhaust minor leak under bonnet

Getting my 2003 TD4 ready for MOT.
It had 3 Advisories at last MOT. 1) The rear offside Brake pipe corroded from (Front to rear)
2) Coil Spring corroded (Offside rear)
3) Minor Exhaust Gas Leak under bonnet.
Number 3 The Exhaust. Does anyone know if this is a Common problem?
The garage will be doing 1 and 2 but I want to see if I can do the Exhaust advisory to save money.
cheers

Depends where it is coming from. Maybe the EGR flexi or clip near battery or manifold to exhaust joint at rear if engine. Whip cover off and have a look! Can't be that bad or it would have knocked you out driving it for a year !!

Running it in the dark and using a torch to see the smoke may help locate it.
Is it deffo leaking?

Thanks lads,
Will have a butchers tonight.
cheers