KimK, the distortion is varied across the entire span of the windshield with the most severe distortion around the perimeter of the windshield where a driver would look during turns (the left or right sides of the glass), cresting a hill (the bottom of the glass), or approaching/transitioning from a downhill grade to level or an uphill climb (the top of the glass). Simply put, I see the distortion wherever I am looking through entire span of the windshield.
What it looks like may be described as a mild version of looking into a fun-house mirror that distorts the view. No, it's not that severe; but, when driving, sign posts, signs, stripes in the road, and even other vehicles look like I'm seeing them through someone's glasses - or as if I'm looking at them under light ripples in clear water. As my car moves, and the line of sight to the objects outside the car changes, that line of sight moves across the variable degrees of distortion in the windshield. If you've ever seen heat waves rising from a hot road and seen the shimmering distortion of objects seen through those heat waves, that is generally what the windshield distortion looks like.
As I've indicated, my eyesight may be more sensitive to such distortions than others. You may not experience the same issue; and, I hope you don't. My quick check (which I mistakenly didn't think necessary for a new car) is to sit in the driver's seat, focus on distant horizontal and vertical lines such as posts, poles, or building lines such as large window frames or the corners of those buildings. I then move my head left and right, and then up and down, to view the various lines through the windshield as a moving target. If those lines that I'm viewing seem to wiggle or change shape as I change my viewing angle, I consider the windshield to be distorted. The more distant the lines being viewed the better the analysis due to the physics of lensing effects which reveal distortion more over greater viewing distances. One minute of angular distortion over a viewing distance of 10 feet may be imperceptible to most; however, that same one minute of angular distortion over 200 yards may be obvious to most (in the extreme, think Hubble telescope and the mirror distortion it suffered - no apparent distortion within the limited dimensions of the laboratory or assembly building; but, disastrous effects over light years).
For me, driving the car makes the distortion very evident as everything changes shape and position beyond what would be normally perceived where there is no distortion. If you don't see it, or if you see it and it does not disturb your vestibular system or your safety, I'd consider it a non-issue for you. No car windshield is optically perfect; yet, this is the only one that has ever caused nausea for me. So, for me, this is an extreme condition which, in conjunction with two other issues (mirror distortion and hands-free voice tag failure), makes an otherwise delightful car into a low-quality failure. For you, it may be fine.
