Most personal finance advisors will say it is never in your best interest financially to lease a vehicle. During the terms of the lease, you'll always need to make monthly payments and you'll never actually own the vehicle. It's basically like renting a car. While financially it often doesn't make sense, there are advantages to leasing a vehicle.
Advantages to leasing a vehicle:
Most leased vehicles include the latest technologies, such as semi-autonomous driving systems, emergency braking, and more.
Monthly payments are often lower than loan payments.
Most of the maintenance and repairs are included. The vehicles often have warranties as well.
You only pay sales tax on the portion you pay, and not for the entire purchase price of the vehicle.
Usually only a small downpayment is required.
For business, it often allows a larger deduction than a purchase.