None of the chrome valve caps I have seen on eBay will fit a 2015 Antara according to the sellers' lists; nor do those shown on BJS's link. I wonder why? Are there differences in valve stems and threads - I always thought they were the same from car to car and have never been asked when having a tyre and valve changed on a spare wheel. Anyway, kids round here nick them for their bikes.
2015 2.2 CDTi SENav 163ps manual 4x4 in Carbon Flash with 19\" alloy spare towing a Bailey Unicorn III Madrid @ 1500kg.