Different wine!
I tasted this wine in-store and thought it worth buying a few cases at its current low price of £4.99. I was alarmed by the reviews below, and just now opened a bottle to check. I think I must have a different batch entirely...
Carmenere is a fairly big and rather tannic grape and I can well imagine many modern palates disliking it for that reason, but some of the comments below are quite specific, about 'off' scents, fruitless flavours and acidic aftertastes. The glass in front of me has very little perfume (Carmenere is not famous for it) but vanilla and dark plum is there, warm and spicy. The flavours, though, are big: damson and blueberry with plenty of the dark chocolate undertow and the tannic grip that makes it such a success with steak.