This old too-hot, too-cold, just-right pattern extends through the seats-kind of soft (Audi), kind of hard (BMW), just right (Porsche)-and straight into the heart of each car's driving characteristics. While their six-cylinder engines differ by a modest 10 horsepower-Porsche's 245 at 6500 rpm, the Audi's 250 at 6300 rpm, and the BMW's 255 at 6600 rpm-from there, the roads they travel to sports-car nirvana dramatically diverge.
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