I wouldn't worry about it, BMW is replacing the engine..so you have a brand new 0km engine and 60,000km left on warranty. Take the new engine and drive it for awhile and see how it goes if you have further issues then ditch it.
__________________
X5M, Eisenmann exhaust, 22" HRE wheels, catless down pipes, Stage II tune/X5 Diesel, Lowered & Tuned
|