The agreement term must be between 12 and 48 months, and the maximum mileage on the lease is 30,000 miles pa. The term and mileage are flexible to suit your requirements, but you must choose mileage you could cover whilst you have the vehicle, before you place the order. This allows the lessor to do the financial calculation to take account of the impact of mileage on the second hand value of the car when you return it to them at the end of the term. If you exceed the mileage the lessor will charge you for the additional mileage at a rate quoted to you on entering the lease.