THE Mercedes-Benz E-class has ruled the roost among mid-size luxury cars virtually from its first appearance in the mid-1980s. The latest version moves on. As a refinement of a car already rated to be among the most refined on the market, it gives others a target to aim for, while providing owners with an experience unequalled just about anywhere. It’s a showcase for plenty of new technology, including things like brake-by-wire, tail-light bulbs that last the life of the car, seats that adjust automatically to suit the mood of the moment and air-conditioning that allows everyone inside to have their own, individual micro climates. Many of these things are optional of course, but even without ticking the extras box, you will still be paying a lot more for your E-class than a similarly specified competitor. Once again, the badge comes at a price.