My 2011 Vauxhall Insignia has developed the known problem of the whine in the gearbox, signifying it's inevitable demise. Vauxhall has agreed to replace, 'as a good will gesture' as the vehicle has done 66,000 miles and hence out of warranty.

However, the dealer advises that the dual mass fly wheel is badly worn as well as the clutch and although they say they will not charge labour for the replacing both they are quoting £1360 for the parts.

Therefore my questions are:

-If Vauxhall have admitted responsibility for failure of gearbox, shouldn't they concede price of the cause i.e flywheel?

-Replacement parts seem steep, are these inflated to cover other costs?

As initial work is considered as a 'good will gesture' do you think there is any mileage in pursuing the above points? Is there any other recourse I can take?