It’s hard to say. We have

• ALH84001 - has what looks like very small cells, associated with magnetite in a way that they originally thought only was possible with life, and also with associated organics. But ways were found for all of that to happen without life. Not easy, requires different conditions on Mars but Mars is different from Earth and it’s possible. (see my Tiny cells on Mars - like the structures in the Mars meteorite ALH84001)
• Tissint meteorite - has organics and the Carbon 13 / Carbon 12 ratio is suggestive of life. But low Carbon 13 ratios are possible through other means (see my Tissint meteorite - a great example of what we might get in a sample return from Mars)
• Nakhla meteorite. Has what seem to be traces of holes bored by microbes. The authors of the paper say that if it was an Earth rock you’d conclude that that’s what it is. I don’t think there is a good alternative explanation yet Mars meteorite similar to bacteria-etched earth rocks

Tiny tunnels in Mars rock hint at life’s traces - the main yellow feature is a fracture and the tiny tunnels that might be bored by microbes are those minute features within the two boxes. The Nakhla meteorite has organics associated with it but unfortunately it seems to be contamination from water from Egypt that penetrated to quite a depth, just a small amount, was a witnessed fall, picked up within days, but they did get buried in the Egyptian soil by the fall, and somehow some water must have got near it, and that may have been enough to contaminate it enough with Earth organics to make it impossible to tell what it had originally.

They measured the organics 2–3 cms below the fusion crust and the calculated that 65 ml of pore water infiltrating into the meteorite would have been enough to contaminate it with the levels they detected, which matched mixes of amino acids from the same conditions in Egypt. Mixed in with non terrestrial organics which were probably in the meteorite before it reached Earth.

But it’s a case of extraordinary results needing extraordinary evidence. It might be that later on we look back on them from a future when we understand Mars better and say they all have traces of life in them. Or we might say that none of them have. Right now, nobody can say. We have no way to find out for sure right now, not that anyone has discovered to date anyway.

But it hasn’t been disproved. The ALH84001 has some structures far too small for present day life, and some have concluded from that that it can’t be life. But there are various ways they could be life, including, that they are some very early form of RNA world life or something else when the cells were much smaller. That’s actually quite likely for a meteorite from very early Mars, which is what ALH84001 is, date of formation rather than date of leaving Mars for Earth.

And though everything can be explained without life, the life hypothesis I think is the one that is most natural still, and requires less special pleading. That is, if you can accept that early life on Mars could have such tiny cells which is the main difficulty with it, but in other ways perhaps what makes them most interesting, if they are life.

So I think you just have to say the jury is still out on that one.

Generally - if not so much hung on it and if you were asked “Is this life or non life” to give your best guess, without all the background that these are meteorites from Mars, I get the impression that at least some astrobiologists might say - “probably at least one of them is”. Especially if e.g. we had evidence that life is very common in our galaxy, that almost every planet has life on it, and also that life is very robust normally, able to survive in a wide range of conditions - then it would make a lot of sense to guess that it is probably life. Because Mars started off very habitable, and if life is common, Mars probably started off with life, and if that is right, and if life typically is as robust as Earth life, it probably had life almost everywhere, and so is likely to have had life in these meteorites.

And if you could get that far in the reasoning, that the meteorites are likely to have life in them - and we have what seem to be signs of life, and we expect signs of life in them - then these may be the signs of life we were expecting.

But it is so easy to be fooled by things that resemble life and are not, and so far we don’t have any good evidence to make it seem likely that Mars does have life - past or present - so you’d be very foolish to say that with any confidence right now. So just have to see what happens.