The camera should not be selecting ISO 1000 for every shot when it's in auto mode. That's not normal.
I'd suggest, check your mode dial. . . Have you been shooting on AUTO or SCN or P? Those are all more-or-less automatic modes, but they don't work exactly the same. The P mode does allow you to set ISO manually, which means it could be set wrong. If using SCN, then it could simply be set in the wrong scene mode. For example, Moving Object mode when taking a photo of a motionless car? Not so good.
Another thing you could try is, switch to P on the mode dial and set the ISO to 100 manually, and leave it there when shooting outdoors in daylight.
As for focus problems. . . It's hard for me to tell much about your focus when looking at these smaller images. I know that the autofocus on my Q7 is among the most dependable of any camera I've owned. If your autofocus is working at all, it
shouldn't be a problem for these kinds of shots.
Incidentally. . . I spent quite a bit of time learning to get the best images out of my Q7, and I did a fair bit of that shooting at car shows. Here's what I eventually ended up doing:
- always shoot raw DNG and process in Lightroom
- usually shoot in P mode with Highlight Correction on AUTO
- switch on the ND filter when the sun is bright (I assigned it to the Quick Dial)
Time learning my way around Lightroom was well spent, for me.