https://www.bloomberg.com/news/articles/2021-01-13/ford-hikes-prices-of-several-u-k-models-due-to-brexit-tariffs
Ford Motor Co. has raised prices for two of its performance-car models in the U.K., citing tariffs stemming from the Brexit trade deal.
Don't you mean why aren't those bloody foreigners eternally grateful for our liberating them in 1944/45 ?
( Obvs not the Germans, Italians, Finns, Austrians, Bulgarians, Hungarians, Romanians, or Slovaks though ).
All the FTA does is prevent quotas and discriminatory tariffs. What it does not prevent is obstructive customs rules,with associated costs, and requirements to comply with additional quality standards, such as the phytosanitory certificates that were previously implicit but now need to be physically generated and presented.