Vehicle-replacement alerts with mileage estimation

A system comprising:

• a network-accessible database configured to store historical mileage data for current vehicles belonging to a plurality of potential customers, the historical mileage data comprising mileage readings taken by one or more vehicle dealers during vehicle service visits;
• one or more servers programmed to execute, for each potential customer in the plurality of potential customers, instructions that cause the server to:
• select, from the historical mileage data, one or more historical mileage values and corresponding historical dates associated with the current vehicle of the potential customer;
• calculate, based on the historical mileage values and historical dates, an estimated rate of mileage accumulation for the current vehicle;
• determine, based on the estimated rate, a first predicted mileage value for the current vehicle on a first date subsequent to the historical dates;
• determine an estimated trade-in value for the current vehicle based on the first predicted mileage value;
• calculate an estimated payment for a replacement vehicle based on the estimated trade-in value of the current vehicle;
• retrieve a mileage level relating to scheduled maintenance for the current vehicle;
• determine, based on the estimated rate of mileage accumulation, a second predicted mileage value for the current vehicle on a second date subsequent to the historical dates associated with the current vehicle;
• and
• generate a service alert for the potential customer if the second predicted mileage value exceeds the mileage level relating to scheduled maintenance, and if a difference between the estimated payment for the replacement vehicle and a current payment for the current vehicle is within a predetermined acceptable range;
• and
• an interactive website configured to allow users who are authorized by the one or more vehicle dealers to access a plurality of alerts relating to the prospects while preventing other users from accessing that plurality of alerts, wherein the plurality of alerts includes at least one service alert.