The lightweight concept has inspired every element of the M5 Sedan's construction, and the result is a total power-to-weight ratio of just 3.7 kg/hp. It's not just the weight that's typical of sports cars: the M5 Sedan's greater agility, higher on-bend speeds and excellent handling also come straight from the racetrack. Other weight-cutting features include the all-aluminium chassis, low-weight front section and V10 engine itself: the latter's structure is exceptionally compact and light. In short, BMW knows that low weight makes for high speed.
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