How soon will the repair bay be free for the next car?

How to say “How soon will the repair bay be free for the next car?” in Japanese

In Japanese

次(つぎ)の車(くるま)を入(い)れたいんだけど、整備(せいび)スペースはあとどのくらいで空く？(はあとのくらいであく？)

Tsugi no kuruma o iretai n da kedo, seibi supeesu wa ato dono kurai de aku?

How soon will the repair bay be free for the next car? in other languages