Half a quart in one year (or even 6 mos) I think is what you are saying? Business as usual, in my experience. Others may have a different experience, but I add that much every 4 to 6 mos, in total. My coolant system is 90% refreshed with almost new everything. When I had the old motor in the car and nothing had been refreshed I would go through 500ml or a half quart monthly.

I would just make a note of when you added coolant, and try to check it every few months, at least. Along with the engine oil. Youll get a sense of what is normal usage for your car, and be alert to when something goes off the rails.

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Current
Original owner 2002 E53 X5 4.4i to 4.6i swap
2025 G06 X5 50e
Former
1972 Audi Fox
1986 Saab 900S
1996 BMW Z3
1998 BMW E36 M3 Sedan
2004 BMW E46 M3
2006 Audi A3 Quatro
1993 Mopar 318 Jeep Grand Cherokee
2015 V6 Jeep Grand Cherokee