I recently (5months ago) purchased a CPO 2013 BMW 650i Grand Coupe Xdrive. I love the car but it's really been unreliable. It's had the ignition coils replaced twice - going in for the third new set next week, burned through two quarts of oil and three cigarette (charger outlets) fuses. I'm worried I bought a lemon. I've heard so much good about BMW and this is my first.