The advanced steer-by-wire system is available on the hybrid and 2.1-litre diesel in Sport trim, and optional on other models. It grants the driver several settings for response and weight. The truth is, though, that you don't want those options.
With the steer-by-wire system the Infiniti is at its most fluent and reactive in its basic modes; any faster or heavier and its steering becomes overly weighty and demanding.
On-centre feel is adequate but feedback is minimal in corners, making it hard to judge what's really going on. The only consolation is that the Q50 is immune from steering deviations caused by bumps or camber changes, but the tradeoffs aren't acceptable.
Ditch the advanced steering system and the Q50 approaches competitiveness with its peers. Again, it does not challenge for the class lead, but it displays decent low-speed compliance, coupled with a control of its body movements that is quite acceptable in the class.
With the conventional steering system it is easy enough to point, with steering that’s accurate if lifeless and prone to weighting up awkwardly in extreme manoeuvres.