It can be tempting to seek out horror stories for historic engines. Whether you’re searching for a used car or looking to stick with one particular brand, knowing the downsides of problematic powertrains can provide you with knowledge of a worst-case scenario for your upcoming purchase. The M57 engine from BMW is one example that some might be tempted to question, with reports of its reliability perhaps seeming too good to be true. However, there’s a reason why it
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