Hello So far I had my Sl only pro rata with 45 % in the business my tax advisor thinks that this is no longer possible and that either travel book or 1 % regulation must be set, but the 1 % regulation looks really bad!! Have calculated something and hope that it is not true ! List price 2013 115.000 Euro Gross purchase price 2018 45000 Euro Gross VAT 7184,87 will be refunded thus in 6 years the sum 27226,89 net tax asserted but 1 % of the Gross new price for private share tax calculated .. that is 82800 €!!! and when selling after 6 years the revenue is then also to be fully taxed .. say 20000 € makes a tax charge of 102800 € compared to a relief of 27226,89 € so about 75000 € .. makes at 42 % 31500 € !! only the difference of the VAT can still be reckoned against ,with about 3250 € meaning .. with the 1 % regulation the car costs me purely fiscally 28000 € ! meh r, as if I did not get it tax at all that also does not change significantly when I take the operating costs .. at 10000 Km about 15000 € into the invoice So I must necessarily keep a travel book .. I guess that also about 50 % commercially comes out of it .. and therefore consider an electronic solution .. enough to do so the Mercedes me app, or Vincard ? or what would you recommend ? LG Klaus