for those that were offended with japs my apologies it wasn't meant with harm or intent
i completely disagree with all on the gs vs f10
the 528 with the 4 cylinder get mpg as described or realistically combined 27 mpg with the right driver using cruise. the Gs gets about 21 mpg on average thats a 35% swing
the n20 is leaps and bounds ahead of the 2.0 in the nx and gs and recently in the is. the n20 is lag free and runs to redline and keeps building power,
the japanese car has lag on low end, for me a no go just like the audi 2.0 and power tapers off at around 5k not on our n20
for lexus to come out 4 years later with the comparable motor have a 15% deficiency in mpg with the turbo, lag and power issues its a complete testament to the engineering of the bmw with the motor side of the house
and as far as realiabitly.. i was worried about coming from the ls but the more i drive my care realize the build quality , change my plugs every 40k , change oil every 7500 with penziol platinum ultra or bmw 's oil whis is the same i think this motor will run for 200k without issues. even the timing chain vs belt is great, no power steering pump to fail.
the one thing that is probably the best of engineering that bmw spent the time to do right is the 8 speed zf with the 3 and the 5 its set up unreal. its perfect, seamless and kicks down without hunting. try that with the new lexus powertrain its a joke.
so yes i compare it to a gs350 all day long and loving it getting 37 mpg today while the j a p a n e s e car would be getting at most 30 on highway on average any traffic its dipping to 25mpg
cheers