Do not have a need for a courtesy car as a NISSAN dealer is in walking distance and I have no issues that couldn't be done the same day on either current Zed or the one before.
But, in terms of customer care, the Honda garage we use for my wifes car couldn't be more helpful - we are 15 miles distance - they will come and collect her Jazz and deliver it back or we can use a loan car. No charge either option and with the loan car just refill the fuel used and sign their insurance thingy about £250 excess for damage (fair enough). I opt for the loan car - chance to try something different - CRV's, latest Civic's etc. They also will do small fix-its while you wait (adjust door closing etc) - no charge or paperwork just good old-fashioned 'service'