VW Passat Stop Start System!!

[csv8]

I am in UK , hire car is a VW Passat diesel with stop start system.
This annoys me greatly! Car stops when I brake and starts again when I come off brake!! The noise of starter motor regularly is annoying. I cannt see how it is more economical?? And how long will starter motor/ring gear last ?? Cost to replace will out weigh fuel savings??? The dct box hasn't been a problem,,,

[simon varley]

get used to it. it will soon be standard everywhere.

[csv8]

[QUOTE=simon varley;5326286]get used to it. it will soon be standard everywhere.[/QUOTE
I hope not its zxcv!!

[new2ford]

You can choose to deactivate/activate it at will in BMW, not sure about VW. I don't mind it. You can barely even hear the engine start in BMW and it starts instantaneously. If it saves fuel .... that's what it's about.

[simon varley]

often stop/start is inhibited if the heater or AC is on.

[csv8]

It's noisy in this Passat annoyingly so,maybe it's because it's a hire car and been not looked after??? Works with heater on !! Cannt see how it's more economical?? Didn't it cause a crash in Vic , last year??

[new2ford]

Originally Posted by simon varley

often stop/start is inhibited if the heater or AC is on.

It's the AC that's inhibited, not the stop/start. In the BMW you hear the AC turn down to a lower rate but otherwise everything keeps functioning. It's bound to save fuel on a typical long idle at a traffic light stop.

Like everything nowadays on our high-tech starships on tyres, it'll be great while everything keeps working, otherwise just another thing to go wrong! But if we take that attitude we should be driving Model T Fords.

Can you switch it on and off in the Passat? You should at least be given that option if the manufacturer has any sense.

[Tassie f100]

Well whoopy bloody doo.We are going to save maybe $20 fuel per year and it will only cost $300 evey5 years for a starter motor rebuild.

[Polyal]

Yeah but what about the starter, surely that thing must get beefed up.

I too think its weird but for city commuters its not a bad thing. Id be nervous for a while wondering "when is the first time it wont start when I want it too".

Is it to help pass some emissions reg's thing? Drop the carbon rating or something hippy like that?

[new2ford]

Originally Posted by Polyal

Is it to help pass some emissions reg's thing? Drop the carbon rating or something hippy like that?

It's one of the several little techniques that manufacturers use to get the quoted fuel consumption figures down to those phenomenally low levels. But as I said, a good manufacturer will give you the option of switching it off if you don't want to use it.

Just wait till it starts appearing on Fords, then you'll have something to talk about

[Smoke Pursuit]

You can switch it off but it comes back on everytime you restart.

My Mercedes switches off about 3 times with the mrs getting it in the garage, yes it is annoying...

[XR Martin]

Its all about getting those official fuel economy figures down as much as possible, thats all people and governments care about.

[mik]

Originally Posted by csv8

I am in UK , hire car is a VW Passat diesel with stop start system.
This annoys me greatly! Car stops when I brake and starts again when I come off brake!! The noise of starter motor regularly is annoying. I cannt see how it is more economical?? And how long will starter motor/ring gear last ?? Cost to replace will out weigh fuel savings??? The dct box hasn't been a problem,,,

I would be thinking there would also be extra wear on engine bearings unless they have an electric oil pump to to start up a micro second before the starter engages every time.
If not this type of stop starting must surely shorten the life of the engine ???

[Silver Ghia]

Originally Posted by Smoke Pursuit

You can switch it off but it comes back on everytime you restart.

My Mercedes switches off about 3 times with the mrs getting it in the garage, yes it is annoying...

I understand that with VW's you cant switch it off.

[Grippy]

I found it quite weird on our new Mazda 3 company car. Simon is right though, it will soon be standard equipment on most new cars.

[Silver Ghia]

My concern is with stop start systems, it will be another thing to wait for when in a queue at the traffic lights, waiting for cars to restart after the driver suddenly wakes up that the traffic ahead is moving off.

Batteries are specially built for the stop start system, so will cost more, starter motors will cost more etc etc.

I certainly wouldn't buy a car which has stop-start that cant be switched off.

[mik]

Grippy ,yeah but still , you cant help but think down the track there might be repercussions from running an engine like this all the time ???

[XR Martin]

Not sure the big deal with VWs having these, because the gearbox will fail before anything else and will cost more to replace than what the car is actually worth anyway.

[blue sleeper]

Gives new meaning to the phrase 'Start ya bastard!'

[new2ford]

Originally Posted by Silver Ghia

I understand that with VW's you cant switch it off.

Skoda Superb, which is Passat equivalent, you can turn it off:

http://www.skoda.co.uk/models/hotspo...4-7f88289cf501

I'm sure this sort of shared technology would be the same across the VAG group.

[Polyal]

Originally Posted by Silver Ghia

My concern is with stop start traffic, it will be another thing to wait for when in a queue at the traffic lights, waiting for cars to restart after the driver suddenly wakes up that the traffic ahead is moving off.

Batteries are specially built for the stop start system, so will cost more, starter motors will cost more etc etc.

I certainly wouldn't buy a car which has stop-start that cant be switched off.

AU till death......

Or when petrol hits $2/L

[Silver Ghia]

Originally Posted by simon varley

get used to it. it will soon be standard everywhere.

It will lead to greater traffic congestions. As I mentioned earlier, it will take longer for each car to move off from a standstill, thus the concertina effect will worsen.

Congestion is greatly reduced when cars behind each other ideally all move off at the same time. But that never happens because someone is looking at their mobile, or not looking at the traffic in front moving off. Ever waited in a queue at the traffic lights and noticed how long it takes before the car in front of you, which may be several cars behind the first, begins to move?

That will only get worse with this stupid technology that manufacturers are shoving at us, so they can claim better fuel economy. And people forget the extra costs down the track.

[new2ford]

Originally Posted by Silver Ghia

It will lead to greater traffic congestions. As I mentioned earlier, it will take longer for each car to move off from a standstill, thus the concertina effect will worsen.

It doesn't take longer, it's completely instantaneous (at least in BMW). There might be a couple of seconds in it at most. And I've always been one for the Le Mans starts at lights so if anybody would notice I would

[FalconXV]

Can anybody confirm if Mazda's i-ELOOP stop/start system uses the starter motor to kick it over when it switches itself off?
Because I could have sworn I read an article that said, because it's direct injection and the tolerances are so low on the SKYACTIV engines, they can fire the piston at TDC and don't need the starter?

[Ben73]

Should be able to turn it off in all cars that have it I reckon. I imagine how annoying it would be in traffic where you stop for 5 seconds then move forward a car length then stop for 5 seconds and so on. Can't be saving much fuel In those situations.
I have been told is requires more fuel to start a car than it uses idling for a minute. Unless this new technology reduces the amount of fuel it uses to start an engine.

[XR Martin]

Its an easy way for manufacturers to get their official economy ratings lower, because part of the Euro city economy tests is something like 10mins (dont know the actual number) of idling.
So dropping a few 100mls/100kms is quite easy to achieve.

[Wretched]

Originally Posted by FalconXV

Can anybody confirm if Mazda's i-ELOOP stop/start system uses the starter motor to kick it over when it switches itself off?
Because I could have sworn I read an article that said, because it's direct injection and the tolerances are so low on the SKYACTIV engines, they can fire the piston at TDC and don't need the starter?

Many people think that long term use may induce additional wear due to lack of oil lubrication, but this is not true. In a start stop system the short stop times keep the engine and oil warm, retaining lubrication.[25] Some implementations do not use a starter motor, eliminating concerns of starter motor wear. Mazda i-stop used in their Mazda3/Axela line (in Europe and JDM) uses combustion to restart their engine by sensing the position of the piston in the cylinder. They claim quieter and quicker engine restart within 0.35 seconds.[26]

http://en.wikipedia.org/wiki/Start-stop_system

[BlueOvalPrint]

Originally Posted by new2ford

Just wait till it starts appearing on Fords, then you'll have something to talk about

Already standard on 2015 model Kuga: http://www.carsguide.com.au/car-news...es-price-29639

I can imagine some of the comments about extra complexity, wear and cost would have also been made when good old simple and reliable crank handles began to be replaced by those new fangled key operated, battery powered starter motors...

[new2ford]

From this:

http://en.wikipedia.org/wiki/Start-stop_system

it's obvious that many manufacturers, including Ford, now offer it and they have varying approaches to managing the technology.

Originally Posted by BlueOvalPrint

I can imagine some of the comments about extra complexity, wear and cost would have also been made when good old simple and reliable crank handles began to be replaced by those new fangled key operated, battery powered starter motors...

My old 1984 Range Rover still had the crank handle hole through the front bumper and onto the engine! But they didn't include a crank handle in the tool kit! Needless to say, I started it by key.

[Deo]

Originally Posted by new2ford

And I've always been one for the Le Mans starts at lights so if anybody would notice I would

Meaning you leave your car at the intersection while you sit at the nearest cafe, and run back to it when the light turns green??


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