The Nissan Altima is a mid-size sedan offering spacious, comfortable seating for four people (or five for shorter trips). The Altima’s standard four-cylinder engine provides adequate performance and efficiency, and Nissan offers an optional all-wheel-drive system for buyers who often travel on gravel or snowy roads. A sporty SR trim with an available turbo-charged engine is genuinely athletic and can motivate owners to seek out curvy back roads. Nissan’s advanced driver assistance systems and infotainment technology generally keep pace with rivals and are easy to use.