IDRIVE central control knob failed. Was not able to use the control knob to change the idrive screen.
IDRIVE locks up in the same screen; need to restart the car to reset IDRIVE.
FAULTY fuel gauge. Saying no fuel when it's got a full tank, this only happens if the car stands still.
OIL Leak - Rubber seal was replaced, but was an environment friendly part, so wears out quicker.
FAULTY transmission failure warning via IDrive.
The most advanced sedan of 2002, which I believed set the standards for today's BMW, and possibly the S-Class has followed this model's design.
My father purchased this new in 2002. It had galaxies of electrical problems related to IDRIVE. This was the first batch of the 7 in 2002 that offered Idrive with lots of safety features.
I am driving the car now with 57000km on the clock, I live in Taipei, the most dense city in Taiwan. The KM is normal; we do not travel far in daily congested city driving.
My family have E - Class and G- Class. We run an export business in AC motors.
Overall we liked Mercdes better for reliability and services in Taiwan.
We like the Seven Series as it offers a better drive than the S-class. I personally like the engine note of the small 3600cc V8. I feel the Seven Series understands what my mind wants the car to do. The Mercedes on the other hand is lesser communicative than the BMW in my opinion.
This 7 series is a great car to drive, with very good suspension; even with large wheels, the car is capable of soaking up bumps and uneven roads of Taipei city.
What I don't like about the 7 series is the electronic aspect of Idrive. I am sure now it's better, but why can't they do the electronics as good as Lexus in terms of reliability? However, no cars are perfect in the world. The 7 series does the chassis, the engine, better than Lexus in my opinion after my recent drive of LS460. I love the LS460, but I find it too quiet for my needs, I really like the BMW 7 Series engine note; that humming note.
The 735 is a very fuel economic car, I get many ks in this car; about 12ltr per 100km. It is very cheap to run for a V8; then it's only 3600cc. They made this engine well.
What makes the running cost up is the service cost in repairs. The Idrive knob cost 1400USD to fix; I find it ridiculously expensive.
I would buy another BMW, even though a few years ago I gave a bad review on a 130; that report has been removed.
I don't like the service of BMW in Taiwan, I don't find them as friendly as Mercedes Benz here.
I would buy another BMW as long as I have a mindset of facing minor problems. Overall this 7 Series and the 130 I had, had more minor problems than the Mercedes Benz I had. But on the other hand, I like the intuitive drive, and the communication of what the BMW offers.
BUY BMW if you can take the fact that more repairs could be needed comparing with Mercedes.
I would like to suggest BMW to improve their customer service in the Taiwan region.
Thanks for reading.