Exchange by Lincoln Courtesy Vehicles are low-mileage vehicles that are eligible for New Vehicle Incentive Offers and the balance of the New Vehicle Limited Warranty. The Lincoln Courtesy Vehicles will also come with an additional 6 months or 6,000 miles of factory warranty coverage.   The vehicles were previously used by our customers and cared for by our very own service department. These vehicles will have between 1,000 and 6,000 miles on them.