Hi, if the vehicle became an eligible deduction in 2017, then you are able to claim eligible expenses starting then. Keep in mind that if the vehicle is used for both personal and business purposes you can only deduct that amount that was related to your income. There's great information on eligible vehicle expenses here: https://www.canada.ca/en/revenue-agency/services/tax/individuals/topics/about-your-tax-return/tax-re...