A frugal driver is someone who is careful with their spending when it comes to automobile usage. Some synonyms for this term might be a thrifty driver, an economical driver, a budget-conscious driver, a cost-efficient driver, or a penny-wise driver. These individuals are often focused on maximizing fuel efficiency, reducing wear and tear on their vehicle, and minimizing unnecessary expenses like car repairs and maintenance. They may drive slowly and consistently, avoid unnecessary acceleration and braking, and prioritize carpooling and public transportation over solo driving. Overall, a frugal driver is someone who recognizes the value of responsible and sustainable automotive practices.