I have owned 6 new cars in the past 4 years, with the Nissan Sentra being my 6th car. I got a more basic model. Granted this is no Toyota Camry or Infiniti G35x, it serves its purpose - a commuter car where I didn't have to dish out an extra $10K for a Prius and averaged 30.5 mpg (mixed city/hwy). For anyone who complains about the quality, the way I see it, you get what you pay for. You didn't buy a luxury car. Personally, I think this is a fun car to drive. It's the smallest car I've driven so far, but it has some good power and acceleration. If you are looking for a reliable car to get you from point A to B, then keep the Sentra in mind.
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