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Car and Driver Calls the X5 M50i a Beast in Instrumented Test and Review
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02-18-2020, 11:24 PM
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Multimodal
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The X5 M50i is an N series engine - however both the 50i and M50i have a third generation design versus the original N63.
The M50i has a N63B44M3. The 50i has a N63B44N3. There are hardware differences. The M50i is more built.
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