One of the key attractions of buying an M4 late into its production run was its reliability record. I've been impressed by how stout the S55 and DCT unit has proven to be and it'd be a tough decision to opt into an aftermarket warranty once the factory coverage runs out.
Bravo, BMW, bravo.
Can you imagine being an Guilia Q or C63 owner? No, thanks.
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Dry sump flat six
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