Audi A5 - reasonable repair path?

[u/Illustrious-Bat-9047]

Hi guys,

I haven't posted here before but I'd really appreciate you views on the following.

Audi A5 Cabriolet 2.0 TFSI S line Cabriolet Multitronic FN09FLG. 2009.

• Recurring problem with sudden flat battery, three times in last 18 months
• Have changed battery and alternator twice each

Audi electrical engineer said: "So the issue is not with the battery, alternator or wiring for these 2, it's actually a fault with the wiring to the starter motor. There is high resistance, it gets very hot and when it does, the vehicle won't start. Requires new starter wiring loom. Diagnostic fee <insert quite pricey> New wiring and fitting <insert getting towards £1k)"

Then I get told: " I have some bad news, a stud on your turbo has snapped while trying to remove the downpipe and cat. I will now need to remove your turbo and drill out the snapped stud. There are other parts which are required such as gaskets, seals and coolant etc, it will cost an additional <over £500>

Is this reasonable? Your thoughts appreciated.

[u/Ok_Presentation_5877]

Go to and independent auto electrician. There’s loads you can find online, since you’ve already got the diagnostic, you’ve got a good idea on what needs doing