Originally Posted by Axxe
It's the price. 320d or even 323d slotted in between 323i and 328i for price would be a hit. Also, 53 mpg is highway speed at exactly 100km/h. I'm talking 320d that gets 50+ combined. They nailed the x5 pricing, slotting it in between the 3.0 and 4.8.
You're bang on there. I'm not sure why BMW makes a 123d but hasn't yet built a 323d. ~200 hp/300 torque from a 4 cylinder diesel is remarkable!