Important: flash setting is nothing to do with EV. This is just the strength of the flash, and is designed to be adjusted by the user for distance (if the subject is close, then turn it down).
Auto ISO is good for that camera - anything higher will result in a lot of noise.
EV is used to tweak the camera's auto-exposure - by default the camera will guess the right exposure for whatever part of the screen you've told it to look at - by default this is whole scene but you can set it differently. Sometimes it will over or underexpose though, because it's not very good at guessing. If you find your images often overexposed then set -ve EV to tell the camera you want to expose less than it thinks is correct. This is usually appropriate for things like sunsets. Likewise things like snow are naturally going to result in a bright screen, so your camera will wrongly underexpose, so you set a +ve EV to compensate. With your camera you adjust EV with a separate button (looks like a rectangle made up of a dark and light triangle with a + and - sign).
My advice would be leave ISO on Auto - this will keep it between 80 and 200, the best range for the camera. If you half-press and it's indicating that it'd like to take a shot with too long an exposure (say anything longer than 1/30) then you have two choices: 1) Set the ISO higher yourself - this will result in bad noise though. 2) Use -ve EV to tell the camera to underexpose the scene. This might produce a darker image than you'd like, but at least it won't be blurry - you can then brighten the image a bit in your image editing program.
My other advice is to change the evaluation from 'whole scene' to 'centre weighted average' - this concentrates the camera on what you're pointing it at, rather than worrying about the corners, so you're more likely to get the exposure of the car correct and don't worry about having too bright or dark a background.