Mazda 6 or nissan altima Nissan Altima vs. Mazda Mazda6 - CarsDirect Nissan Altima vs. Mazda Mazda6. By . Meghan Ingram. Our Verdict: Mazda Mazda6. The Nissan Altima is the known quantity in the midsize sedan category,... Source Source Source Source Source Source Source Source Source Source Read Also: Compare mazda 6 and nissan altima Mazda 6 vs nissan altima 2011 Mazda 6 vs nissan altima 2010 Mazda 6 vs nissan altima Compare mazda6 nissan altima Nissan primera vs mazda 6