Quote:
Originally Posted by xirsteon
Which of the x1s are n20s and n55s? What year to what year?
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N55 is the 35i, N20 is the 28i. Although in Europe and ROW, the 28i used to be the N52 N/A 6 before late 2011. 2012, all 28i models are powered by the N20/N26 depending on your state's emission laws. The N55 has always been in the 35i variant.