I really wonder how many of us owners of these new XE's take that break-in period really seriously. I don't mean that as criticism, but as a love for this car--it really is a sweet automobile--and it really is "new".
I've never had a car that is ORDERED by me before it's built, not made from smoothed-off parts that have been melded together by months of warehouse storage before a customer buys one.
I drove mine tenderly during the first 1000 miles, and could feel the way it twitched and shifted like a wild animal at first, then finally settled into a calm powerful creature, as I stuck to the same brand of fuel in it, and stayed away from all temptations to rev the RPMs, fly off in Sport Modes or test the pavement. I know, it's such a yearning to want to DRIVE this thing right away, but something told me, obey the break-in period and go easy.
I had to take mine back to the dealership for ONE problem---wiring harness in the seat caused the Airbag caution light to stay on all the time: Even so, when I got it back, it drove roughly for a while---I could tell those danged mechanics would try to have their two minutes of thrill in a dream-car and probably drove it around those winding storage ramps like a rocket. So I really think there's something vital to this break-in period, even more critical on an ordered-car than on a warehouse-car.
So if you get really honest with yourself, have you all performed the break-in period seriously?
I suspect a lot of us accidentally give the XE mechanical trouble if we don't let that baby have its break-in period gracefully and gently. Don't pamper it, but don't enjoy yourself with it until after 3000 KM or so. I'm nearing the end of my phase, and my vehicle has had no other odd behavior. Practical perfection.
Trust me, the car is wicked and can beat most of what's on your streets today as long as it has a good driver behind the wheel. Be that good driver, and be patiently give her that break-in,... even now, as you get it back from this repair issue. You won't regret it.