Just ordering a new Audi A3 saloon S line its a 2019 model on a 69 plate, I noticed it hasn't been fitted with either a spare wheel or jack from the factory? there's just a big space under the boot floor where one would go!!

When I asked the dealer about fitting one they said they were not allowed to as it would effect the co2 emissions of the vehicle?? Can't quite work that one out?

I see there's lots of spare wheel kits available on eBay can someone please point in the right direction as to part numbers size and wheel bolts spaces etc. so I pick up the correct one which will actually fit?

Thanks