SIX 40
Seasoned Member
Isn't this the same engine as in the M550? I know that the engine in the M550 has a lot of reliability issues.
Though they share the same architecture, the m550 has the N63 engine while the M5 has the S63. I researched this heavily as reliability was one of my main concerns in purchasing a German car with a complex engine. I’m fairly confident that with proper maintenance, my S63 will serve me well.
Here’s an article that breaks down the main differences between the two: