The BMW B48 is arguably the most underrated production 4-cylinder engine on the mass market right now. It's featured in the most mundane of vehicles ranging from a grocery getter 330i, to the Mini JCW GP, and the M235i Gran Coupe. Regardless of the application, this engine has proven the test of time over its ongoing ten year production run in regard to its fuel efficiency, power production, reliability, and aftermarket support. In today's video, I'll break down the B48 engine from a technical standpoint and explain why I believe it deserves respect amongst some of the 4-cylinder greats!
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