Driving style is Every thing in mpg.....(ok , it isn't everything but it is a big part of it).
Just driving a little more concisely , and not ******* it can greatly increase your Mpg. Just look at top gear, when they test the M3 and the Prius. The M3 with the V8 got a lot better gas mileage.

 

this is true, its because there is parasitic loss due to the automatic using engine power to shift itself, while the manual its using your power, haha

 

I always get better mpg rolling to a stop in gear

 

You're actually HURTING your gas mileage by shifting into neutral.

Here is why:
When you coast in gear, the injectors are shut off.
When you coast in neutral, the injectors have to supply enough fuel to maintain an idle.

Not to mention the damage you can (and will) cause to your transmission syncros switching back and forth while at speed. You also lose the ability to engine brake. There is also the frightening possibility that you might put the transmission in reverse, which would not end well.

As for the transmission fluid pump working in neutral - it does, but only to the torque converter.

 

There's two current/active threads regarding engine stalling.....it happens.

 

Ha ya I saw that.. Followed the pruis with the M5. (Pretty sure M3's are 6 cly.) atleast my '93 was..

 

When you coast in gear the engine will slow the vehicle down (manual trans) so you can not coast as far.. I am not sure about the injectors shutting off though, ever cut the fuel (or spark for that matter) to an engine while it is running? It doesn't like it much and would cause the vehicle to slow that much more. The idea is not to drag the vehicle down... Due to the fact the vehicle would come to a stop a lot sooner than it would if it were in gear you would have to get on the gas sooner than if you coasted out of gear, even if you did you fuel while idling. It would at least equal out.

 

haha no it was an m3 ,bmw moved to the v8 in 2008 when they came out with the E90 , and yes your m3 is the inline 6 , just like my 87 e30 and 92 e30 m3 both are

 

I wish I could drive with my injectors shut off, thatd sure save a lot of fuel!

 

dude i know!

 

sweet shifter's are for women and children and race car drivers.

 

Never happened to me in neutral, but I never tried coasting in N. But I have lost power steering when I ran out of gas...while driving...uphill
It's not that hard to steer, you just gotta put some muscle into it. And it's not scary, unless your going backwards down a hill to try and pull off to the side of the road (it's scary, trust me, especially when cars are coming around a blind corner directly behind you)

 

So, is it scary, or not?

 

LOL

 

We have had this discussion before. The injectors stop spraying only when the RPMs go to zero, the ignition is off, or there is no fuel pressure. The spray amount is determined by RPM, TPS, IAT, MAP, and H2O temp with RPM and MAP being the two primary drivers and the others being offsets. When you let off the gas in an automatic, they reduce the amount of spray, but keep on spraying.

Recently Yahoo News posted an article (on warming up vehicles) that recommended shutting off your vehicle at stops if it is going to be stopped for more than 10 seconds. Aparently this is equivalent the amount of fuel that is used to restart it. IDK if I would do this in an Auto (due to all the shifting), but I have done it my two manual transmission vehicles.