Infiniti Q50 features steer-by-wire

‘Fly by wire’ allows for the replacement of mechanical linkages between the aircrafts flight deck (cockpit in the old language) and the planes control surfaces (such as the rudder and ailerons) with wires that carry the pilot’s commands electronically. Now that same principle is being used by Infiniti to link the steering wheel and the front wheels of their new Q50 model.

The ‘Steer by wire’ system, called ‘Direct Adaptive Steering’, works by electronically transferring the driver's input to the front wheels where a high-response actuator drives the steering rack.

Infiniti says by eliminating the mechanical losses that can dull the responses in conventional systems, steering response is faster and vibration at the steering wheel is eliminated. Drivers can even tailor steering weight and response settings to their own liking.

Infiniti has reassured buyers that the technology does benefit from several back-up systems, including a conventional mechanical steering linkage, should something go wrong.

But the Japanese brand believes the system is safe and has carried out extensive on-road testing to prove it. They even allowed Formula One champion Sebastian Vettel (Infiniti's Director of Performance) to put it to the test on Infiniti’s testing track.

The Q50 is likely to start arriving here around November, with a starting price below $60,000. It is powered by a range of engines from a turbocharged four provided by Daimler, and will sidestep its German rivals with a solid emphasis on driving enjoyment.

The official introduction of the Q50 comes as Infiniti confirms plans for a major model expansion at both the top and bottom ends of luxury motoring, with a Q70 flagship and a baby model to compete with the Benz A-Class.

“The Q50 is coming, absolutely. It's here in quarter four,” Infiniti Cars Australia's spokesman, Peter Fadeyev, told Carsguide in May. “It will be our fifth model. And it will be our largest selling model. This will be competing in the most important sector of the Australian luxury car market.”

He refuses to even hint on the price points or engines for the Q50 but we're likely to see a range of engines from turbocharged four-cylinder petrol and diesel motors through a 3.7-litre V6 to a hybrid package.

Direct Adaptive Steering will be offered as standard on the Infiniti Q50 hybrid later in the year (a model we don’t get in Australia). It’s exciting technology (so long as those back-up systems are reliable) that we will most likely see across many more models in coming years.

Joel Helmes is the editor of the Behind the Wheel radio program, heard on more than 150 stations around Australia, and www.behindthewheel.com.au