If you are trying to list a vehicle, use a laptop / PC and Chrome not the app, then most would agree the best way to list a vehicle is through a Classified ad.
Here's all you need to know about Selling with classified ads: https://www.ebay.co.uk/help/selling/listings/listing-tips/selling-classified-ads?id=4167&st=12&pos=1...
One tip, after you've completed your listing check it very thoroughly and all the photos, as once it goes live you cannot amend / add anything to that listing.
@lambrettaruss