" As the title says, all I can say is WOW. I dropped my M3 off for service today (and some other minor things), and they gave me an X1 to take home. I always liked the X1, and was hoping it was the 3.0 liter turbo - but as I was walking up, noticed the xDrive28i symbol. I though this was just the 3.0L NA I6 engine that I have driven before.
The first thing I noticed was that the car had a TON of torque. I attributed this to the 8 speed transmission, and drove the rest of the way home from the dealership in stop and go traffic (not sure I like auto start/stop btw). Anywho, I had a business meeting after work - and since it was well past rush hour, finally got to drive it spiritedly down LSD (our main/8 lane road along the lake). I was shocked that this iteration (thinking at the time it was the N53 [I really haven't kept up with the non-S engines to be honest]) of the motor gained so much power. It really felt quick - especially considering it was an SUV.
I kept telling myself that the badge wasn't right - and that it was instead the N55 or something, but sometimes it just didn't feel powerful enough to have 300 HP - then other times, I felt it did. I kept going back and forth, not knowing what the hell was powering this thing. A N53, N55 - and didn't even CONSIDER a 4-cylinder N20. I did notice on the highway, that I could mash the pedal down all the way - and lift off again very quickly without any response from the engine (a la N54/N55). I then had no idea - it had to be turbocharged, but just didn't feel right as an N55. This is getting too winded...
Pulling into my garage, I was in 2nd (from a stop - up a hill to my spot) - and gave it about half throttle - and heard the turbo whistle. I popped the hood, and there it was. A 4-cylinder; I swear to God this thing didn't feel rough. It wasn't as silky smooth as a I6, but it was DAMN close. At high RPMs, you would be hard pressed to tell the difference.
As far as power goes - for the MPG this thing gets, this engine would be something I would recommend to ANYONE buying this car. Yes, the N55 has a bit more torque, and a bit more power - but to be honest, this is so close, I doubt most people would notice. Oh, and the trip computer says I still have 400 miles left in the tank. I am literally so giddy over this - I think that little engine is so awesome now - with a tune, it would probably crush the N55 stock. "