biggest dislike about the 1-series?

[Lucky1]

Originally Posted by BruceWarne

The lower the gear the more engine braking. Which you obviously already know.

But I'm pretty sure it burns no fuel in that condition. So don't worry about it.

Here's a little write-up from Popular Mechanics:
http://www.popularmechanics.com/cars...l-fuel-economy

For what its worth if you have the digital display under the speedo set to the real-time MPG readout and you downshift before you go down a hill your mileage goes to 99MPG (the highest it will read) which would suggest you are correct that it is not burning any fuel in that condition. That's how it is on a 6MT anyway, I'm sure it is the same for a 6AT as I'm sure the engine principals don't change.

I thought most automatic transmissions down shifted when they sense the car is going down hill and the throttle is released? You get more control that way too. I'm sure my Honda Civic did it. If it didn't you'd either be on the gas tearing down the hill too fast or off the gas and let your engine possibly stall as the RPMs crashed with no throttle.

Originally Posted by JLL325ci

I just don't like pressing on the gas to go downhil. Seems weird.

What did you mean by this?

[JLL325ci]

Originally Posted by Lucky1

For what its worth if you have the digital display under the speedo set to the real-time MPG readout and you downshift before you go down a hill your mileage goes to 99MPG (the highest it will read) which would suggest you are correct that it is not burning any fuel in that condition. That's how it is on a 6MT anyway, I'm sure it is the same for a 6AT as I'm sure the engine principals don't change.

I thought most automatic transmissions down shifted when they sense the car is going down hill and the throttle is released? You get more control that way too. I'm sure my Honda Civic did it. If it didn't you'd either be on the gas tearing down the hill too fast or off the gas and let your engine possibly stall as the RPMs crashed with no throttle.



What did you mean by this?

Lets say I am going down a hill and coming to a corner and have to tap the break for a split second. The car downshifts right off and slows down alot to a point where I have to give the gas again. It seems a bit much.
I also find it very hard to believe that a car at 2000 rpm is using the same amount of gas as a car at idle at 1000 rpm.

[BrokenVert]

Originally Posted by JLL325ci

Lets say I am going down a hill and coming to a corner and have to tap the break for a split second. The car downshifts right off and slows down alot to a point where I have to give the gas again. It seems a bit much.
I also find it very hard to believe that a car at 2000 rpm is using the same amount of gas as a car at idle at 1000 rpm.

Its not about engine speed. Engine works because you dont dump fuel Into the engine. This creates a vacuum condition within the cylinders - which acts to slow the car.

The engine runs at 2000 rpm, but thats because the rear wheels are making the engine turn. No fuel is being supplied, hence why the mpg reads 99.

This vacuum condition is made greater by our turbos...which also pull a vacuum off throttle

[JLL325ci]

Originally Posted by BrokenVert

Its not about engine speed. Engine works because you dont dump fuel Into the engine. This creates a vacuum condition within the cylinders - which acts to slow the car.

The engine runs at 2000 rpm, but thats because the rear wheels are making the engine turn. No fuel is being supplied, hence why the mpg reads 99.

This vacuum condition is made greater by our turbos...which also pull a vacuum off throttle

Well at any rate I don't like that feature. It just doesn't feel natural

[BruceWarne]

Originally Posted by JLL325ci

Well at any rate I don't like that feature. It just doesn't feel natural

I can see how what you describe can be a total PITA - stuff like that is why I don't like cars picking gears for me.

[Sylon]

I really wish my seat belt would stop being so protective. Now, I know it's designed to save my life and keep me in my seat when I am approaching impending doom. However, when I'm parked in a parking spot the belt lock doesn't need to engage every time I try to buckle up, lol. I promise seat belt, I am in no danger whatsofuckingever while I am sitting in my garage with the engine off.

[infinitekidM2C]

Originally Posted by Sylon

I really wish my seat belt would stop being so protective. Now, I know it's designed to save my life and keep me in my seat when I am approaching impending doom. However, when I'm parked in a parking spot the belt lock doesn't need to engage every time I try to buckle up, lol. I promise seat belt, I am in no danger whatsofuckingever while I am sitting in my garage with the engine off.

maybe you two need some space

[tuphdc]

not enough room for doggy style

[WhiteTgr135i]

Biggest dislike in the 1 are the rear seats. Useless for anybody that aren't midgets.

[tccox]

Easy, dash popping , passengers side in hot weather

[Motohip]

Washer squirters not integrated into the wipers.

[1BlackDropTop]

Originally Posted by tuphdc

not enough room for doggy style

This is where the vert comes in handy

[135Pats]

Pre-update idrive
Dash popping
A pillar creaks
Glovebox creak
The almost otherworldly crappyness of the cupholders. I really think we’re being trolled.
The odd angle you have to contort your shoulder to in order to reach the seatbelt to buckle up.
The pathetic offsets we’re forced to run short of fender modification.
Defective 3rd brake light design
The generally un-intuitive nature of certain interior features I.E. door unlock button not just saying….unlock, or having a key symbol.
Droopy sideskirts
Girly looking headlights

Everything else ranges from good to sublime.

[Dackelone]

My biggest grip is the pathetic size of the fuel tank. Its the size of a thimble!

It should really be 80 liters to 70 liters in size, not tiny 53 liters it is.

[tuphdc]

Originally Posted by 1BlackDropTop

This is where the vert comes in handy

hah! that's when you really really feel like showing off

[KarlMalden]

Originally Posted by Dackelone

My biggest grip is the pathetic size of the fuel tank. Its the size of a thimble!

It should really be 80 liters to 70 liters in size, not tiny 53 liters it is.

This and the 18 mpg...terrible gas mileage although I still only have 18 k on it and others have indicated gas mileage somehow gets better with age.

[Dackelone]

Originally Posted by KarlMalden

This and the 18 mpg...terrible gas mileage although I still only have 18 k on it and others have indicated gas mileage somehow gets better with age.

IF you can drive at slow speeds, you can get 27 or 28 mpg. The worse I have seen though is 9 mpg at Warp Autobahn speeds. That's less than 124 miles on one full tank!

[Lucky1]

No dipstick
CDV
RFTs
No spare tire
No clear coolant reservoir
No easy access to the air filter
Door doesn't close after a cold snap due to the window being frozen


Everything else is great.

[Motohip]

interior door pull placement too far forward.

[makrop]

Cup holders are way to stinkin shallow!

[blinded]

Originally Posted by BrokenVert

This vacuum condition is made greater by our turbos...which also pull a vacuum off throttle

I was with you until this. I don't think the turbos do much of anything during engine braking.

Anywho, I've had the car for less than a year, any my only real complaints thus far are the RFT and squeaky brakes (brake pad sensors, maybe?).

[BrokenVert]

Originally Posted by blinded

I was with you until this. I don't think the turbos do much of anything during engine braking.

Vacuum was the wrong word. I was trying to keep it simple for people without an engineering background.

Basically when the engine goes off throttle it isnt putting fuel in the cylinders. But the compressor side of the turbine still has intake air running over it, this air causes the compressor blades to generate lift (which keeps the turbos spinning)

That lift causes a pressure drop in the intake (basically the compressor side takes energy from the flow) Add to that the fact that the compressor side isnt designed to generate lift in this way and you end up with a very dirty flow (ie with lots of drag) going into the cylinders. Increasing the drag increases the pressure drop in the flow.

That pressure drop causes the air flowing into the cylinders to be at a pressure lower than ambient - increasing the vacuum effect and increasing the amount of negative work the engine can perform (engine braking)