Repair shops must display a sign setting out charges and repair practices. The sign must be in a conspicuous place and must state:
• That the repairer is required to offer a written estimate unless the consumer authorizes a maximum amount they are willing to pay.
• That replaced parts will be returned to you if you want them.
• How labour costs are calculated (including the hourly rate and any flat-rate charges).
• Whether there is a charge for estimates and whether commissions are paid to mechanics.