There are currently four types of automotive leather:
ANILINE (Unfinished): Found in very expensive cars (300k plus), very soft to touch and basicaly flawless. It will absorb water. Stays cool in the summer and warm in the winter. Expensive.
Alcantara: Found in expensive sports cars (100k plus), looks like suede. Will require very specific care and products.
Semi-Aniline/finished: the second most comom type on cars. Has a protective coat that offers a nice supple fell and protects at the same time, but it also causes the seat to get hot in the summer and cold in the winter. Won't absorb water (drop some water onto the seat to test it). Very few products will condition it properly. Will require some scrubing to remove all the gunk and body oils.
Pigmented: The cheapest one. Found in american cars, this leather has a (very) strong coat to hide the natural defects (it's cheap, remember?), therefore it won't absorb water/conditioner at all. Clean it by giving a little scrubing. Don't bother with conditioners, because it won't work.