Every once in a while, something pops up that surprises me. So I’ll start off by saying that I had no idea that this model even existed. ‘What?’, you say – and rightly so, as I just looked at an E89 Z4 Roadster a few weeks ago:
2011 BMW Z4 sDrive35i
Ah, but that was the turbocharged ’35’ model, and while I knew there was a lower-specification naturally aspirated ’30i’ model (the same engine configuration was called ’28i’ in the E8x/E9x at the same time, making things more confusing). What I didn’t realize is that model was short-lived, though I suppose it should have made sense. The 2-Series went to four-cylinder power with its introduction in 2014, ending a long line of naturally aspirated inline-6 power in BMW coupes. But the change had already happened in 2012 in the E89; the N52 was dropped in favor of the N20. That should give you a clue as to displacement; this ’28’ was now 2.0 liters with a turbocharger. That probably sounds like a bit of a disappointment, but in typical German fashion it was pragmatic. The N20 was shorter, lighter, more fuel efficient, and effectively, just as powerful. Output was down to 240 horsepower from 255 with the N52, but torque was up to 260 lb-ft – 40 more than the N52, and while it can’t out-stump-pull the N54/N55’s numbers, for argument’s sake the 2.0 put out the same twist as the S54. Better still, while a majority of these engines were hooked to the equally pragmatic and efficient ZF 8-speed automatic, you could get a six-speed manual. So here’s one of the chosen few so selected:
