Hi,
I am new on the forum.

I am currently looking to buy a 2019 to 2022 C43 AMG.

I came accross a 2021 model today

I am in the province of Quebec in Canada and one of the options is confusing me.

In french it says:
Ensemble siège de conducteur AMG[C1]
Top speed raised to 250km/h, Rythme de piste AMG (My note: AMG track pace?)

It translates to AMG[1] Driver's seat package,
I wonder if it was an error in translation.

They can't seem to be able to pull the windoww sticker with the codes give me the details of the options like, for example:

DA1 AMG Driver's package.

Is AMG Driver seat package a thing?

There was an AMG Driver's Package in Canada which raised the top speed and included the AMG DRIVE UNIT and some other stuff. I think the performance exhaust was part of that, too. There's no AMG Driver's Seat Package, however, you can optionally get the AMG Performance Seats. It's not a package, just optional bucket seats. Call up MB Canada with the VIN. They can get you the windows sticker with all the options, or email you the exact option list of the car. There used to be VIN decoders online that provided all this, but most are defunct for newer VINs and the ones that still work don't give you the complete options list.