I have had my 640d for more than a year now. I purchased mine from a reputable used car dealership and had the regrettable need of addressing a warranty problem within the first month. I describe it as disappointing since no one wants to confront such issues about a purchase they have made; nonetheless, the procedure itself was very seamless. This warranty problem pertained to a drivetrain malfunction occurring during acceleration.
On a plus side, because to the warranty requiring adherence to ITSA protocols, my technician successfully replaced the following components before discovering that the DPF pipe had split and was the primary issue.
Pre-turbo pressure sensor, all vacuum pipes replaced, pressure converters.
The primary motivation for purchasing a 6 Series, in my case, was its aesthetic appeal compared to the 5 Series. It seems very magnificent.
The maintenance of a vehicle ultimately depends on your own preferences. I undertook the following modifications within the first year of ownership :
ZF8 Gearbox Maintenance Interim Oil and Filter Replacement
All brake discs, pads, and sensors have been changed. Avoid installing inexpensive discs and pads on these vehicles, since they are prone to overheating owing to the car's weight.
Guibo, flex disc, and prop shaft bearing changed.
Differential seals and bushes replaced and serviced.
Tie rod ends have been changed.
Principal Service
The specifications are as follows :
A panoramic roof is essential for the vehicle, particularly if the inside has a dark hue.
Harman Kardon Audio System Rearview Camera
The 6 series often includes several common extras; nonetheless, the aforementioned alternatives were essential for me personally. I was somewhat deterred by the LCI facelift versions due to reports of LED headlamp failures and their expensive replacement costs.
It is important to note that this vehicle is not really a five-seater, despite the presence of a middle/rear seat.
