Your section 179 deduction is generally the cost of the qualifying property. However, the total amount you can elect to deduct under section 179 is subject to a dollar limit and a business income limit.
Per IRS Publication 946 How to Depreciate Property, page 18:
Sport Utility and Certain Other Vehicles
You cannot elect to expense more than $25,500 of the cost of any heavy sport utility vehicle (SUV) and certain other vehicles placed in service in tax years beginning in 2019. This rule applies to any 4-wheeled vehicle primarily designed or used to carry passengers over public streets, roads, or highways, that is rated at more than 6,000 pounds gross vehicle weight and not more than 14,000 pounds gross vehicle weight. However, the $25,500 limit does not apply to any vehicle:
For more information regarding Section 179 rules, please see IRS Publication 946.