Quote:
Originally Posted by X4guy
thanks for your feedback, my car is 3 years old still on the fence and not convinced its that much better for it looks almost the same as the F25. I am waiting for the X4 Xline reveal then I will make my call. The M40i engine is the only compelling reason currently.
|
The 2018 X3 M40i with its more powerful B58 engine, superior brakes and M Sports suspension is a clear performance upgrade over my 2016 X3 35i. It will be on my short list when I am in the market for a new vehicle.
Below is a link to an article on the B58 engine, which I found informative.
http://youwheel.com/home/2016/03/27/...linder-engine/
The B58 design is superior to the N55 in many respects. The B58 features greatly improved performance and throttle response. However, its design includes some features that may complicate long term maintenance. There are greater heat management challenges due to the closed deck design of the B58 including a mechanical coolant pump for the engine and a separate electrical coolant pump for the turbo. The oil filter and its radiator as well as the VANOS timing chain are now at the rear of the B58 engine, making certain components more difficult to access.