toyota, only because of lexus, and even then i dont like the cars much, i rather go german.
mazda, well ive had them catch fire on numberous accounts, although those were older cars, some with low miles, some with high... electrical was a problem, and getting the doors to open, they all seemed to mess up with the doors. sense most were older modles i would give mazda another chance in a with the 3 and 6.
nissan, well ive owned some newer models, ive spent well over 2000$ on a 3000$ car. im getting rid of it soon. its in perfact shape, but twice the engine stopped working (took it in, never figured out what was wrong, but got it working again) then it eats stearing fluid, and used to leak oil. i dont like nissans one bit. other modles have just been horrible reliabilty (familys cars) ive owned two, a truck 95, and a sentra 97, both under 100k miles, both had a lot of problems... never will i own another nissan, well not this decade...