There's definitely people around who'd try it on with petrol money, etc. I had this years ago.
I was in a more comfortable position than some friends I had, and I liked driving so I'd often drive us places and didn't ask for a contribution as I figured it would even out in the end as they'd drive me at some point.
My dh would usually pick us up after a night out which saved a taxi, and would sometimes drop us off, too.
If we got a taxi somewhere, I was asked to pay my share, which sometimes grated on my dh as he would be picking us up later and saving them all the fare back (we never asked for any money for doing so), so he figured they'd want to let me off paying a share of the taxi there, but because it's only about £2 I'd never said anything, and in the scheme of things, I wasn't that fussed about it.
If we drove further and the journey cost, say around £20, we'd split it 4 or 5 ways, if someone else was driving, but when I'd done it, I've not asked for money from them, and it was never offered.
A new friend joined the group, and they drove somewhere, which cost £72 in fuel, so I expected to split it 4 ways (inc the driver), and gave my other friend a £20 note. I was then told they decided it was £45 from each of us and they'd already paid it, so it was just my share left. I said £20 more than covers it (plus a bit for wear/tear and driving), and was told that it was so nice of this person to put themself out and drive all this way (somewhere I often drove us & not asked or been offered any money), so they wanted to cover her costs to show it was appreciated.
I ended up paying it, but it made me feel differently and like they didn't value it when it was me driving; it just seemed expected, and I was certainly not ever offered any petrol money, or even a drink as a thanks.
I then realised that this happened a lot, I was always expected to pay a share even though I did probably 70% of the driving and never asked for anything from them. The other way around, if I was one of them, I might ask for a contribution from the others, but not from them one who ferried me around a lot and never wanted a contribution for it. I would see it as a way to show I appreciate them.
I then pulled back on offering to drive. On days/ nights out that got organised regularly via group chats, they'd say A, B orC is driving, which is so nice of them, and it's £X each (which is often way more than it costs). Everyone would respond "that's great", etc, but I started to wonder if it's only me that paid that silly figure, because if no one could drive and they asked me to drive, they didn't offer to give me anything for it.
I think they saw me as rich and not needing the money, and although I'm more comfortable financially than they are, it would still be nice if they had offered, as it did start to make me feel used.
I distanced myself before covid and don't see them now.