I6 engines have no equivalent except for v12s in sound. V6s just dont hit the NA spot in all of us. But if we are talking I6s; it's either M103 or M104. M103 is undoubtedly the best engine in history but M104 is not quite up to par. M104's oil leaks and guaranteed headgasket problems surely make me wish I had bought a 98. If MB wanted to bring back the I6, I would make 1 suggestion, don't put the intake tube on top of your headers.

I have lost all faith in BMW. 7 series=disaster (Both mechanically and electronically). Anyone who bought it wished they bought a benz or already had one. Z4, back alright but front is disgusting. And supposedly they spent a billion dollars on it. The only respectable things BMW has done in the past decade has been M coupe, SMG and Z3. Only in the US has BMW made something out of themselves, the rest of the world treats BMW like the crap that it is. I think Audi will beat BMW with their upcoming A8. Audi design like MB makes sense to the eyes, the lines are flowing and logical. The 7, Z4 and partially Z8 stick out like sore thumbs and seem too conservative to be a concept but still to illogical to be production models. Looking at the entire BMW lineup, I would maybe choose an M coupe as a monthly retreat car. What BMW has to do is to spend time on designing. Look at SL r129, MB built such a good design that it lasted 12 years and didnt release sl r230 until they felt that they made the best convertible on the planet. Ultimately in the future, BMW owners wont come back due to being disillusioned by BMW. Look at most MB owner's garage, most have multiple MBs over time and keep coming back. I have a neighbor that has an MB from ever decade since 1960. I have never seen multi-generational BMWs parked in the same driveway. Nuf Said.