Got a strange starting problem. 19 times out of 20, my '07 Honda Fit starts instantly. But about 1 time in 20, it will crank very slowly, as if the battery is nearly flat.
If I turn off the ignition, then try again after a couple of seconds, it will (usually) start instantly, as if nothing was wrong.
Also, if I keep it cranking for a couple of seconds, it will suddenly speed up and start. So I don't think it can be a flat battery.
I haven't been able to link this behavior to using any accessories (like the A/C or demister), engine temperature, weather, or anything else. It really has no clear pattern.
However, it's slowly getting worse. A few years ago it was 1 time in 100. Now it's about 1 time in 20. It's also failing to start on the 2nd (or 3rd) attempt more often now. So I'm worried about getting stranded somewhere now.
Thanks for any suggestions what to check.