Connecticut drivers may be seeing a surprise on their car tax bills this year. A new law now bases car taxes on a vehicle’s original sticker price, not resale value. The tax is calculated using a percentage of the manufacturer’s suggested retail price, adjusted each year for depreciation. The change aims to bring stability, but has led to increases for some, especially owners of older or low-resale-value vehicles. Officials say the new system should become more predictable moving forward, though local mill rates still play a major role.