Is auto stop start a good thing?

[Polarbear]

I hate it but its the default setting on the car.

How many kittens will it save?
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[BTTD]

Depends on how often you stop.

[Skudd]

It's a pain in the arse. Can you imagine ten years down the line in the second hand market when the battery is on its way out.
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[Tankie]

It's just more wear and tear on the starting system
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[Polarbear]

[rpsmith79]

[grr666]

The next car I want has it. So I'll just dispense with using the handbrake and neutral gear if it's obtrusive. So to avoid
being eco'd against my will, I shall simply drive in a less "safe™" manner to avoid triggering it. Same thing with that, you
have to turn it off each journey. Is there not a fuse you can pull PB? That's the first thing I'll be hunting for or maybe
disconnecting the dash switch might disable the system too. Had S/S on a hired Clio when I went to Monaco a few years back,
got on my tits it did.
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[The Shaggy D.A.]

It's just another system with a myriad of sensors and doodads that can go wrong and will be expensive to replace. Annoyed the fuck out of me in the cars I've driven with it.
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[J4mes]

[MarJay]

Lot of disinformation in this thread.

Stop Start is designed by manufacturers to be supremely reliable. When the voltage of the battery drops, Stop start is disabled. The starter motors and other electrical gubbins are more resilient on a car with stop start.

Stop start has allowed Porsche to continue to produce powerful 911 iterations, and it allows BMW to build 300-400bhp monsters and still pass emissions. If it means I can have a car with loads of power and not have it strangled by trying to cut down CO2 in other ways, I'm all for it.

Yeah it's annoying at first, but you get used to it pretty quickly.

I suspect BMW for example test the stop start to destruction. There doesn't seem to be any common reports of stop start failing or causing other problems on any car that support it.
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[B5234FT]

Agee with Marjay.

I used to stop my engine in long queues anyway, now it happens automatically without dropping out the stereo/handfree, headlights etc.

[rpsmith79]

I suspect the folk who hate it, are either using old/crap systems, or those commonly found on diesels, as i have driven quite a few cars now with Stop/Start, and only ever found it intrusive on an older diesel Passat (most noticable by the clatter of the engine starting up)

On the newer MINI's and Honda Jazz petrol cars it is barely even noticeable, and is uncanny at knowing when you want it to start up again, even thinking about pressing the clutch seems to bring the Jazz engine back to life, but being a relatively small engined car with a quiet engine to start with, unless you are looking at the rev counter, you would hardly know it has stopped or started, and neither car has ever failed to start when needed
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[LustyLew]

My Fabia has Stop/Start and a push to start button

Doesn't often come on in the colder months. Handy in the summer when stuck in traffic for a long time.

Only time I've ever found it irritating is if I've stalled and I try to restart the car. It's usually kicked itself back in and I end up turning the car off!

[Hawkeye1250FA]

Got it on my a5 diesel. Standard routine is shut door, belt on, start engine, turn s/s off.

I leave it on when I'm pushing the envelope of fuel stops. 🤣

Doesn't bother me either way tbh, it's easy to turn on and off.
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[stinkwheel]

The stop-start on my van is finally broken.

My understanding is it's not powered by the battery anyway. I thought it was an accumulator that spins up with the last of the engine revs.

In any case. I dipped the clutch, started to let it out, engine spun as if to start, failed to do so and left the nose of the van sticking 2 feet out into the junction with the central console reading "Error. Stop-start deactivated". or words to that effect. I then had to turn the key the way off before I could work the starter leaving me stuck out in the junction for longer than was healthy.

Happily nothing was coming.

Even more happily, it now defaults to start-stop off. The main dealer neither noticed nor mentioned this when it went in for its first service. Nor did they fix its tendancy to reset itself to kmh, lock-out all the radio controls or reset the language settings to French

Yay, Citroen. So I killed this "reliable" system to the point of potentially crash-inducing failure in less than 18 months.

Stop-start also makes you ride the clutch.
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[M.C]

[chris-red]

My missus has it on her fiat 500, it's a bit naff, she has a button to turn it off which is now a part of her the starting routine. It's fine for traffic lights but shit for junctions. Other downside is a new battery for her car in £200+! It's a 1.2 FFS, my 2.5 litre Scooby cost £55 for a new battery.

It's starting to go I think this winter the stop start rarely kicks in however the car still starts with no hesitation, the battery is 8 years old TBF.
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[Polarbear]

[GSTEEL32]

Other than Black Cabs, which seem to think its perfectly acceptable to sit on tick-over for 6 hours straight without moving, making the air generally un-breathable, I don't see any possible advantage to start-stop .......

I also don't see the possible environmental advantages of "hybrid" technology requiring 2 engines, which is twice the raw materials, and twice the mining and environmental cost, just to produce an extra 20 mpg.

Then they offer the car on PCP, meaning the new owner will bin it in 3 years time to buy a new one ........ meaning more use of natural resources....

I'd personally relax the MOT laws for private use and get people to get the older cars running longer .... I'm all for saving lives in the event of a crash, but if you spend most of life sniffing around B roads at 30 mph going to the shops, its unlikely your ever going to need a 100 mph crumple zone ....

[M.C]

Define old? My car is nearly 12 years old, has a 5 star NCAP rating, doesn't feel/drive like an old car. The only thing I don't like is paying £230 a year 'road tax', apparently a 1.6L petrol kills many polarbears

[Sister Sledge]

I have it on my car - Leon 184 diesel which is a re-badged Golf GTD. It works well though can be a tiny bit hesitant sometimes. It's not awful though.
I just switch it off when the engine is first started.
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CCM 404 DS

[weasley]

Stop-start is a consequence of how fuel economy and emissions testing is carried out. The NEDC test cycle involves several periods of standstill - the car manufacturers realised that the engine did not have to be running then, and if they weren’t running then they weren’t burning fuel and pushing out gases. In the real world it only saves fuel if you stop, so for long journeys it is largely redundant..

I switch it off every time I drive now. It works fine, but I prefer to keep the engine running and stable unless I am stopped for a long time.
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[Sister Sledge]

^^ That. My location here is mostly free running traffic with very few waits and no long waits. Stop start for me is pointless but I do also see the benefits.
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CCM 404 DS

[B5234FT]

[chris-red]