ROADWORTHY PASSED! REF Number : SI-014023. Ah, the 2017 Audi RS6 Avant; an emblem of superior German engineering. This beast houses a 4.0-litre TFSI V8 petrol engine, bolstered by a fuel tank capacity of 75L. With so much raw power, one might presume it to be a gas-guzzler, but alas, Audi’s avant-garde fuel-saving measures indicate an impressive fuel economy of 9.6L/100km. It is a sublime marriage of functionality and sophistication, promising undeniable luxury and exhilarating speed. In its all-wheel drive, the RS6 gives superior traction. The ride may run you a steep penny, but after all, excellence is never cheap.