Dear members.. Today I scout around kajang used car dealers . I see some really nice 320i e90. Around age 2007 average. range from 65k to 80k.. My question is , is 4 potters really that bad in terms of reliability? My mechanic stressed that I should get 6 potters to avoid kacauu. Can any 320i users enlighten me. As 325i is a bit pricey & hard to find .