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!!

[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

[Silver Ghia]

Originally Posted by new2ford

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

It must take some time for the engine to restart, whether half a second, one second or two, and that causes further congestion as I tried to explain.

Say if you are in a queue with 10 cars in front of you and it takes a second longer for each to get going, 10 seconds will probably mean 2 or 3 less cars getting through the lights before they change to red again. Which adds those cars to the queue for the next lights change, which otherwise would have gone through.

[4vxc]

Originally Posted by Silver Ghia

It must take some time for the engine to restart, whether half a second, one second or two, and that causes further congestion as I tried to explain.

Say if you are in a queue with 10 cars in front of you and it takes a second longer for each to get going, 10 seconds will probably mean 2 or 3 less cars getting through the lights before they change to red again. Which adds those cars to the queue for the next lights change, which otherwise would have gone through.

takes no time to restart
if its a manual as soon as you touch the clutch or its starts
auto starts when you release pressure on the brake pedal
there is no measurable delay with the latest Mazda's

[new2ford]

Originally Posted by Silver Ghia

It must take some time for the engine to restart, whether half a second, one second or two, and that causes further congestion as I tried to explain.

In theory that's true but in reality it's quite instantaneous and within your normal reaction time. Also the reality is that there are so many dozy drivers at traffic lights it doesn't actually work like a Bathurst start. By the time the various mobile phones are put down, gazes averted from the nice sheila on the footpath etc etc

[LoudPipes]

Originally Posted by Silver Ghia

It must take some time for the engine to restart, whether half a second, one second or two, and that causes further congestion as I tried to explain.

It feels instantaneous in my Merc.

Originally Posted by FG50T

The real reason is to cut emissions. Effective for cars that sit in traffic most of the day in big cities. The selling point is it aids low fuel consumption.

I agree.
I understood it was to do with reducing emissions to help achieve the tough European requirements.

[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.

[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.

[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??

[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

[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...

[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...

[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.

[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.

[devilcv8]

Originally Posted by Silver Ghia

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

My daughter' new polo has it and it can be switched off.

[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 ???

[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.

[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

[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!'

[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?