Absolutely nothing! (Yet!)
I live in abject fear of something going wrong with this aesthetically stunning car. This is not due to any worrying noises or vibrations but solely due to the constant whining of dissatisfied 156 owners.
Touch wood, after 6 months my Alfa Red 156 moves me in exactly the same way as it did when I first turned the key in the dealership. Everything about this car screams style with performance. If you like the look of the thing, buy one! It's as simple as that. If you want a massive dealership network then go buy a Ford or Vauxhall. To be honest, if you are really that concerned with servicing, repairs and the like, you are not an Alfa driver. I hear Volvo do a marginally exciting car these days.
It's easy to comment on the 'constant whining' of other 156 drivers when nothing has gone wrong with your car yet....
I doubt people like whinning about their 156, considering all of those who complain about the problems still love the car, me being one of those. But when you spend this much money on a car, you expect good quality. This was a past winner of European car of the year, you kinda expect a little more. Enjoy your 156, get back to us with your problems!
Everyone told me to buy a Toyota, because they are the most reliable cars ever... well I have had an Avensis for about a year now: big problems! Bad starting, loosing oil.. I never had such a problems with my Alfa 155. Right now I am selling my Toyota to buy a 156!
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Just you wait... the problems will come ;-)
Mine was decomposing after 3300 km and the engine self destructed after 10500 Km.
Is a 156 that special? I love cars and I like my 2.0 T-spark, but its not that sporty, its not that fast, its not that well built, its not that comfy, its not that exclusive. Its certainly not boring, but in the face of big bills I'm getting a solid, boring, older German or Swede. By stopping the dead money trickle through my fingers with my newish, but depreciating 156 I can then make it interesting. Subtly tuned 1.8T SE A6 in grey/black on big rims anyone? Sub £5k big engined Volvo S70 2.4T SE/T5? Blame Autotrader for planting these naughty ideas in my mind.