Thanks for the explanation .
Based on your response, including the number of shares and voting rights, I’d say the advantage of A shares is voting rights and the advantage of L shares is probably liquidity as there are many more shares.
I always choose to buy shares with voting rights over shares without them (eg. Volkswagen), even if they are a bit more expensive.
if only we could actually vote with our voting rights
I also prefer voting rights but until now never actually got the opportunity to vote (afaik you can only vote when attending the shareholder meetings).
America Movil is a Latin American Telecom company owned by Carlos Slim, once the richest man in the world. Like @EquityInvestor I would usually go for shares with voting right. But as it is majority owned and controlled by the Slim family, then the L shares would be my preferred choice as it is more liquid and slightly cheaper