For automotive use, you'd be better off with Martin Loren's Hscope app on an Android phone or tablet, and his HS502 or HS512 scope. Depending on settings, those scopes are up to 12 bit with very low noise. Hscope is a very friendly pure Android app. You can find it on the Android playstore, and can use it in demo mode. The HS502 and HS512 come with licenses for the basic scope and automotive mode pre-installed. There is a very active group on Telegram, and Martin regularly checks in. App improvements are constant.
Martinloren.com is his website.
There are also many videos on YouTube. Just search on Hscope. Some good posters of videos are:
The Gadget playlist
Martin Loren
and Ravifix.
Do a search on Telegram for Hscope and Hscope Automotive
Jon