AUDI has just replaced its volume-selling A4 with a new model that promises a far more sophisticated package to counter BMW and Mercedes-Benz, the established prestige Germans in the segment. The new A4’s entry-level engine, the 1.8-litre TFSI, is a brand new design that, in tandem with the car’s new, bigger body, impressive interior and extensive features list, gives the Audi A4 its best shot yet of taking a bigger slice of the entry-level executive sedan market.