While BMW certainly used to favor naturally aspirated engines, the German automaker has been relying on boosted fours and sixes much more frequently over the last 20 years. BMW has experimented with ...
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BMW's quad-turbo diesel X5 M50d: A technological marvel
The story behind BMW's unique quad-turbo diesel engine, its impressive performance, and how it stacked up against its rivals in the X5 M50d.
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