
Powertrain
The V10 is the whole thesis and the whole risk
The E60 M5 exists because BMW built a V10 supersedan with Formula 1-era energy and put it in a usable four-door shell. That is why buyers still chase it, and also why weak cars get abandoned fast.
Buyer relevance now
You cannot separate the S85 ownership burden from the value story. Rod bearings, throttle actuators, SMG health, and the cost of bringing a neglected car back all shape the market immediately.
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