Instant responses, a distinctive sound, and an irresistibly free-revving nature - the straight six-cylinder petrol engine takes the best qualities of its predecessors and hones them even further. Not only do its advanced engine electronics and Valvetronic variable valve control increase power and reduce fuel consumption, the use of aluminium/magnesium components - a first for a production engine - saves weight and thereby improves agility. State-of-the-art engineering for maximum driving enjoyment.