Hi Sarah, dont worry about it too much....when i first bought my 182 they came on under hard cornering but i restarted the engine and they dissapeared and i havent seen them since lol. I also had a knocking engine mount but that managed to fix itslef also lol. My gearbox has also been rebuilt due to a leak and the rear shock is now leaking and although these problems have occurred i still love my car!
There is light at the end of the tunnel, you get problems with all new cars nowadays, its down to how well the dealership sorts them out really...id recommend trying another dealer if the one youre currently using are not being helpfull.