At the end of the day it's your car and if you're not happy with it take it back to the dealer and demand they fix said problems.
About the rear spoiler mine's dosen't come up until 65 MPH either but my fuel light works.
I also have wind noise on the drivers side and intend to get it seen to soon.
I only bought my car a few weeks ago.
It's 9 months old.
I only got one key with it but they have ordered a spare key for me and when I go into get it programmed I will bring up any concerns I have.
It is the most money I have ever spent on a car so I will not be taking no for an answer.
A car costing this amount of money or any amount of money for that matter should be 100% and if you dont get them fixed under warranty they will just bug you for for ever.


Norrie.