With the E90 generation 3 series we saw the introduction of a new BMW N/A straight six. The N52 and the N53 are the final naturally aspirated straight-6 engine's produced by BMW, ending a history of continuous production of this engine configuration since the M30 in 1968. The N53 began to be phased out following the introduction of the N20 turbocharged straight-4 engine in 2011.

At the time of the engine's release we didn't realize we were seeing the last in the line of BMW's signature engine configuration. With this video, we take a look at what made the naturally aspirated petrol 6 such a success and joy to drive.

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