 After having driven 3 BMW 3 series for the last 10 years, we derided to change the car and go for a larger one with still a sports car character. After trying the new BM, Lexus is, Mercedes. We bought an Infiniti G37X. It is a very good quality car with a fantastic engine and transmission. Overall workmanship of the interior is not as good as BM or Mercedes definitely, but still very good. One of the adjustments we had to make was the frequent service intervals. In BMW or Mercedes, intervals are 15,000 miles. In infiniti, it is 3750 miles. This means 2-3 more visits to the dealer/service. In addition, Infiniti is not as generous as BMW or Lexus, which provide loaner cars for all service vis