If you or someone you're caring for has limited mobility, ease of entry and exit is a big deal in a car. Life will be easier for seniors if they can get into and out of the car by themselves with ease.
Avoid low-slung cars and mile-high trucks or SUVs. Instead, minivans and crossovers offer good ease of access.
Minivans, such as a Honda Odyssey, don't require a huge step up to get into the vehicle, and their seats are at hip level for many adults, which means they're easy to lower yourself into and get out of.
Caring for someone else often means traveling with a lot of stuff. Make things easy on yourself by using a car that can handle a walker or wheelchair and makes loading and unloading easy
Also consider how high the cargo (truck) load floor is, particularly if the person you're caring for has heavy equipment that needs to be transported. On some cars you have to lift very high (above your hips or waist) to get items into the trunk area. If you're dealing with a heavy wheelchair, that will take a toll on your back.