If you have N63 engine, make sure B0001314 is done on your car, aka "Customer Care Package" - all free
Customer Care Package:
- check the timing chain for stretch; replace if necessary
- check the following items and replace if necessary: fuel injectors, mass air flow sensors, crankcase vent lines, battery, engine vacuum pump, low pressure fuel sensor
- change the oil service interval to 12 months/10,000 miles
For S63 - they are only covering fuel injectors which I have BMW dealer to replaced mine
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