Single Engine Taxi

I would guess that they would sway, because the engine is farther from the center of the plane. On the MD-80 types, they often taxi with one engine because of the high power to weight ratio, as well as the closeness of the engines to the middle of the.....gosh i need to go to bed

Might be easier using differential braking in FS, smooth application of power also helps.

I didn't know that jets taxi on only one engine. Is to save on gas? I usually taxi on both engines

They do, but I wouldnt think that the 737 would go on 1 engine

if planes taxi on single engine, what do they do with the other engine, just keep it running for no reason? + pilots are always keeping track of the amount of fuel they have for the flight, but they also prefer, (as i am told) to keep the same amount of fuel in the aircraft on all the tanks. To do that, they would have to undergo a crossfeed, which, I think, is very uncommon.

I haven't flown a lot but, all the 737's I have flown in taxi with both engines...

I think it is rare certainly in the UK to taxi SE on a two engine ac. This said I know and have seen plenty of operators shut down one or both engines taxiing to the gate once close enough to "roll" the rest of the way...APU running for obvious reasons! May be done more often on three/four engine jets as the power required to taxi is available on two engines.

As far as I know and have experenced, the MD-88 does taxi on a single engine. It seems we've confirmed that the 737 doesn't for obvious reasons, there could be more that do.