Hello Alex,
Thanks for being in touch with the forum, and sorry to hear of your (not too uncommon) issue.
The Audi ‘recommended’ garage quote seems unacceptably high to me - excessively? - and must include the supply, fit and spray of a new wing.
I would seriously question this need, and if it were mine, I would hawk this around a couple of local body shops and obtain estimates there. You could also try a couple of ‘smart repair’ specialists and see what becomes most attractive to you.
Claiming on insurance would be my last resort, since I would anticipate a local repair is likely to cost little more than an average excess - we would hope.
Of course, if you claim off your insurance, then bang goes your NCB, and even if this is protected, your next premium will be hiked - as it will be, even if you just notify your insurers you have been involved in this accident - even if you decide not to claim.
All of this boils down to not informing your insurers, and simply getting quotes to get it done yourself. Very unfortunate, but…..
Car is on lease? - I’m probably out of touch, but a little surprised that a 5 year old car is still under lease.
Hope some of the above is of some help.
Kind regards,
Gareth.
p.s. For recommendations on good value Bodyshops in your area - call in at a couple of smaller volume used car sites and ask for recommendations there. These boys usually know where good jobs are done at reasonable prices.