What must dealerships show customers regarding the odometer before a sale?

Dealerships are required to show customers the odometer statement or title before a sale to ensure transparency regarding the vehicle's mileage. This statement acts as a legal document that indicates the mileage on the vehicle's odometer at the time of sale. It is essential for buyers as it helps prevent odometer fraud, where a vehicle's true mileage is misrepresented for profit. By providing the odometer statement or title, the dealership confirms the accuracy of the mileage and supports the buyer's decision-making process regarding the vehicle's condition and value.

The other options, while related to odometer information, do not carry the same legal requirement or significance in terms of informing the buyer accurately about the vehicle’s mileage. For instance, retrofitted odometer details may not be applicable unless the vehicle has undergone modifications, and estimates of total mileage or previous readings could be subjective or incomplete without the official odometer statement. Thus, the most important and legally binding document is the odometer statement or title.