Having previously driven a car with a mildly unreliable power steering system, it’s an extremely good thing that the power steering was backed up with a mechanical linkage (that worked very well — it was surprisingly subtle when the power steering crapped out at 30mph).
A drive-by-wire system had better be a lot more reliable and also notice impending failures.
I personally cannot stand power steering systems. There’s always a dead zone and the feedback is delayed, in some vehicles more noticeably than in others, but it’s always there.
I feel like I have had several close calls that would have been accidents for sure had I been driving with power steering.
What car do you have without power steering? Or, are you referring to electric as opposed to hydraulic power steering? I haven't seen a car without power steering since the early 00s (which was a 90s car).
The steering deadzone is not purely a function of power steering. Some of it is design or could be attributed to that, but a bunch of it also comes from slop in the physical connections in the steering column, as well as the suspension bushings, your tyre profile, etc.
It turns out I was mistaken! I haven’t done enough research to determine the actual cause of the effect I have noticed. It might be hydraulic vs electric but I don’t want to make that assumption and be wrong again - I’m going to have to research the steering in other cars I’ve noticed that issue in.
There’s definitely a different feel to the electric motor driven assist. Though there are just many different implementations probably the specific one you had was particularly quirky.
Relatedly I had a Hyundai i30 for a while which has a well known fault where the plastic gear connection (called a Spyder Bush) from the electric motor to the steering column would break. Resulting in slop and a clunk. Not hard to imagine similar failures or bad design.
I once drove an early car with an electric steering assist system. (It was either a renta or a test drive, I think it was an American car, and I don’t remember what brand or model.). It was terrible. There was essentially no feedback from the road to the wheel.
The opposite is true. Those old AMCs without power steering were just as easy to steer on the highway as any other car (once you managed to get up to speed) but the parking lot was a chore and parallel parking was neigh impossible.
Fancier power steering systems basically fully disengage at speed because you don’t need them; they’re for moving the wheels when you’re stopped or nearly so.
A combination of whatever fiddling the mechanic did and making sure the fluid was topped off seemed to solve the issue. Also, it was a good, if somewhat old, car, and the mechanical steering was quite good. I was able to steer it without much difficulty at pretty much any speed even in no-power-steering mode.
But yes, I agree, unpredictable steering response is dangerous.
A drive-by-wire system had better be a lot more reliable and also notice impending failures.