The BMW E46 M3 delivers 333 horsepower from its legendary S54 straight-six with individual throttle bodies and an 8,400rpm redline. With values stabilizing around $25-35k, this might be your last chan …

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The BMW F80 M3 with its twin-turbo S55 engine makes 425 horsepower stock, but that power comes with German maintenance costs that'll make your wallet lighter than carbon fiber. As these cars hit the u …

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