[ejm3]

Yes. Other than an oil change I haven't had any service done on my BMW so I don't know what the dealer's policy is yet. But at the Acura dealer if you wanted a loaner you needed to let them when when you booked the appointment. So they would look to see when they had an available time slot to do the work and when a loaner was available, so you might have to wait longer to get an appointment as they only had so many loaners.

One time they had no loaners the parts manager said I could have his car (a TL-S) for the day. Apparently the parts manager got a "company" car, which kind of shocked me and might help explain the obscene hourly rates at the dealer.