I use them on my customer's cars sometimes. They seem to be all right for the price [50 pesos except for the ML2000 which costs 60 pesos] The ones we get here are made in USA. The parts guy used to carry Mann+Hummel filters made in China for 5 pesos less until I went on a made in China tirade, if he still stocks them he keeps them out of my sight. I do like their filters because they are clean straight out of the box. Nissan original and Gonher brand filters come out of the box dirty, black residue on the threads, paint flakes, grease residue, etc. I've been using Bosch Premium [3323] on my own car [79 pesos], but their quality doesn't seem any better from the outside, also made in USA.