Interest in a car lasts hours, not days. Answer after two days and you are writing to someone who has already seen three other cars.
- Reply even when you have no time: "Yes, still available. Shall I call you this evening?" keeps it alive.
- Answer the question asked. "What is your best price?" is not answered with "Come and see it".
- Offer two concrete times. Asking "when are you free?" drags it out.
- A phone number in the listing shortens everything — many buyers call before they write.
Every dealership page here shows its average response time. Buyers see it. That is free advertising — or the opposite.