Bad corrosion on all door handles & badges, both of which I replaced. Dealer even asked me if I lived next to the sea as he'd never seen that sort of corrosion before.
Some water ingress when it rains. Got told by dealer not to drive in the rain in future
Sounds as if you are with the wrong Dealer Selcouth! In my experience they do vary enormously, but a visit to the works usually sorts out the issues.
And a few weeks ago, my air flow meter went bang. I always thought there was something slightly wrong with the car as she popped and banged more than she should have done, she was badly down on power and fuel consumption was worse than expected. Now fixed (for an arm and a leg) and throttle response is much better

I have to admit I was so cross when it went that I almost put the car up for sale, but there's nothing like a spirited run to make you realise there's no way you want to sell up
I don't know the age of your Aero, but from the mileage and your avatar I guess it's relatively new? Wasn't this a warranty issue?
Glad to hear that it has been sorted, but to improve performance at little or no cost, the factory take out most of the internals of the air filter housing. Not sure exactly what it entails, but it does make quite a big difference to the performance and most Aero's serviced at the works have had it done.

I'm pleased to hear that you are now enjoying your car.
Brian