My girlfriend has a MK3 Astra and tonight when she left work she noticed a loud rattling noise from the rear, so when she got out to investigate she looked under the back of the car and there is a large plate type thing sitting loose on top of the exhaust. :shock:
This thing was bolted onto the underside of the car just above the exhaust but it looks as if it has corroded around the bolts and fell off.
Does anyone have any idea what this thing is/does and how much it's likely to cost to put right?
Any help appreciated, thanks.