Electric and hydrogen vehicles have been at the forefront of emission reduction efforts, but innovative plasma technologies like plasma ignition and nonthermal plasma catalysis are emerging as game-changers in the transportation and energy sectors. Plasma ignition, through high-frequency electrical discharges, enhances combustion efficiency in internal combustion engines, offering a cost-effective way to reduce emissions and improve engine performance. While facing cost barriers, ongoing efforts aim to make plasma ignition systems more accessible for mass-market adoption. On the other hand, nonthermal plasma catalysis is transforming hydrogen production by enabling the creation of clean hydrogen streams without high heat requirements or reliance on fossil fuels. This method, using plasma to activate molecules and catalysts, shows promise in significantly lowering greenhouse gas emissions associated with hydrogen production. The adaptability of plasma systems to various feedstocks and their competitive energy yield make them attractive alternatives to traditional methods. Both plasma ignition and plasma catalysis highlight the importance of diverse solutions in the low-carbon transition, with the potential to reduce emissions and drive energy efficiency alongside electric and hydrogen technologies.