BMW and M Power Owners

Does it turn the engine off too (guess that would be illegal) ?; if not, compared to coasting in highest gear to a stop, where, it also stops injecting fuel, it could be less eco.
BMW know what they're doing. Coasting in neutral where there is no engine braking effect and mechanical drag from the drivetrain uses less fuel on an instantaneous basis, but the distance you can travel whilst coasting that way versus coasting in neutral where you lose all the drag is much shorter, and therefore coasting in neutral is more fuel efficient on the whole.

There will be cases, for example a steep, long down hill run, where coasting in gear could be more efficient because the gradient keeps the speed up against the engine braking and drag effect.
 
But I would assume BMW know their stuff and it is more beneficial to idle rather than roll in gear.
it probably depends on driving style whether ECO is beneficial .. people never seem to learn light sequences/timing on their commute route, and remove foot from accelerator sooner;
for an autobox could you actually leave it in highest gear, as you do in a manual, where drive train drag is minimal, and, with manual you always have the option of pushing clutch in too, if you need to stretch the final coast out. ... have never pushed the clutch in at >40mph to see how that would feel
 
D and foot on the brake here. I have stop start turned off as it does my head in most of the time, I'll turn it on if I'm in heavy/city traffic though.

I also just turn the car off and get out without touching the gear lever, I'm just really lazy :p
 
BMW know what they're doing. Coasting in neutral where there is no engine braking effect and mechanical drag from the drivetrain uses less fuel on an instantaneous basis, but the distance you can travel whilst coasting that way versus coasting in neutral where you lose all the drag is much shorter, and therefore coasting in neutral is more fuel efficient on the whole.

There will be cases, for example a steep, long down hill run, where coasting in gear could be more efficient because the gradient keeps the speed up against the engine braking and drag effect.

Its always amazed me just how long it takes to lose speed when in eco pro coasting mode. It seems to go for ages! It's really useful in heavy Motorway traffic.
 
Yeah that was one of my favourite things about the F10, the coasting mode seemed to just last forever. The C43 has Gliding mode, but it's not as good in terms of keeping speed. But then with that car, I'm very rarely in eco mode, whereas I was in it 2/3 of the time while driving the 530
 
I'm almost sticking to eco mode most of the time (when driving normally), but the really dull throttle response, and slow pulling away does take some getting used to. Especially if you're trying to move quickly.
 
Correct. The car also has an auto-hold/hill start system, so when you let of the brakes the car will remain stationary until you apply the throttle...the brakes are automatically held on until you press the throttle pedal to prevent rolling backwards.
Is that the same for the DCT as well or just the slushbox? (i know it will hold it after releasing the break but i wasnt sure what its being held by).
 
TW is correct (as is more often than not the case). My DCT rolls backwards on a slope, the 'hill hold' gives you two or three seconds once you come off the brake before it starts to roll. The six (and, no doubt, the eight) cylinder manual transmission cars have this feature too.

The Z4 with SMG would also roll backwards on a slope.

On a level surface with no pressure on the throttle a DCT / SMG car won't creep forward, so I don't always need to keep my foot on the brake at the traffic lights...so perhaps that is the answer for the chap who's putting his automatic in P at the lights lol
 
New tyre time(225/45/r19), 320d needs a couple on the back, Goodyear f1s are the current ones. Worth sticking with the same? Normal driver. Simple question apologies.
 
New tyre time(225/45/r19), 320d needs a couple on the back, Goodyear f1s are the current ones. Worth sticking with the same? Normal driver. Simple question apologies.

Never ran Goodyear's myself but I understand they are a quality tyre. If you've been happy with them I'd advise to stick with them...
 
Don’t think I’ve ever experienced this coasting thing in my car. When I get onto the motorway, I normally select eco mode if I remember and then set cruise. Does it do this coasting thing in cruise as well?
 
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