Vehicles with stop & start system

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Lady Fraktor
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Vehicles with stop & start system

#1

Post by Lady Fraktor »

Does anyone use this feature?
I am getting a new vehicle that has this and Fiat says 62 mpg without using but can get 14% better economy if using it. (73 mpg)
What are your thoughts on driving with this?
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Re: Vehicles with stop & start system

#2

Post by notFritzArgelander »

I have several thoughts......

1) You are babying us "Amerkins" by discussing mpg figures. Does Fiat really quote mpg to Slovakia which being a civilized country on the metric system I'd suspect is using kilometers per liter? ;)

2) My only concern would be reliablity. 14% fuel economy improvement is nothing to sneeze at. I'd teach this old dog the new trick as long as the additional complexity of the starting system has negligible effects on mean time between failure. Is there data on that?
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Re: Vehicles with stop & start system

#3

Post by Peter802 »

Takes a bit of getting use to NFA.
I have a Honda with it fitted and it causes me no problem after 2 weeks of running with it.
You have to keep the electrical side well maintained and ensure the battery is up to the job.
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Re: Vehicles with stop & start system

#4

Post by Peter802 »

Sorry my last should have been pointed at Gabby. Sorry for my error.
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Re: Vehicles with stop & start system

#5

Post by Greenman »

Hi Gabby,

My old Kia Sportage had this feature, I had that for 4 years. It only happens when you go into neutral. Thing to watch out for is doing this just as the traffic lights go green. :)

Easy once you get used to it. I think the savings on fuel are a bit massaged 14% seems a lot.

Now driving a Kia Niro hybrid, I like hybrid technology & the automatic gear box is excellent.
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Re: Vehicles with stop & start system

#6

Post by Lowjiber »

Gabby, I've Jeep Wranglers for several decades... Owned five of them over the years. My 2019 Wrangler came equipped with the feature and I use it all the time when driving in the city... Works great!

Wranglers are pretty much known for lousy gas mileage... I've experienced a 24% increase in MPG with this one.

Using the function is a no-brainer. It simply turns off the engine when the vehicle is stopped and brake is engaged... No need to put the transmission in neutral. A small green light in the dashboard illuminates when it has turned the engine off. If the driver wishes to disengage the system a simple button on the dash is all that is required... The switch illuminates when engaged.

I obviously don't engage the system when four-wheeling in the desert.
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Re: Vehicles with stop & start system

#7

Post by pakarinen »

When they first came out, I would hear them at stoplights and wonder what was wrong with the cars / trucks. LOL.

My only concern would be how well the starters hold up.
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Re: Vehicles with stop & start system

#8

Post by Lady Fraktor »

notFritzArgelander wrote: Tue Nov 17, 2020 6:00 am I have several thoughts......

1) You are babying us "Amerkins" by discussing mpg figures. Does Fiat really quote mpg to Slovakia which being a civilized country on the metric system I'd suspect is using kilometers per liter? ;)
I thought I would be nice as 4.5L/ 100 km, 3.8L/ 100km may not mean much to the Amerikans :lol:
That is Imperial gallons, in US gallons it would be 3.79L/ 100km, 3.2L/ 100km

Thank you for the input guys, it should be interesting to see how well it actually works.
The Fiat has a 1.3L diesel engine with 5 speed manual gearbox and with fuel at 0.987/L at the moment making it last a bit longer would be nice. :)
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Re: Vehicles with stop & start system

#9

Post by Lady Fraktor »

notFritzArgelander wrote: Tue Nov 17, 2020 6:00 am My only concern would be reliablity. 14% fuel economy improvement is nothing to sneeze at. I'd teach this old dog the new trick as long as the additional complexity of the starting system has negligible effects on mean time between failure. Is there data on that?
I am not sure about all of the parts involved but I see in the information about the system the starter, alternator and battery are changed out for larger capacity units.
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Re: Vehicles with stop & start system

#10

Post by Lady Fraktor »

Lowjiber wrote: Tue Nov 17, 2020 11:57 am Gabby, I've Jeep Wranglers for several decades... Owned five of them over the years. My 2019 Wrangler came equipped with the feature and I use it all the time when driving in the city... Works great!

Wranglers are pretty much known for lousy gas mileage... I've experienced a 24% increase in MPG with this one.
Wow John! A 24% increase with a Jeep would be amazing, my 2004 Grand Cherokee had to be going down a really steep hill with a strong wind behind to get 16 mpg! :lol:
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Re: Vehicles with stop & start system

#11

Post by Star Dad »

Our older civic is a hybrid - we gave it to our daughter. I really miss the start/stop engine in the city. It was quite disconcerting at first but you get used to it. That car is a 2005 model and still running well. My wife really regrets giving to the daughter. I know it's not a Fiat, but I presume the technology is similar. BTW my favorite car of all time was a Fiat Spyder. Fiat = Fix it again, Tony. I learned a heck of a lot about cars with it. But it was a really fun car to drive.
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Re: Vehicles with stop & start system

#12

Post by seigell »

My previous 2016 Jeep Cherokee had the Stop-Start System, and it was Great. 12% Economy Gain on average.
My Ram 1500 has the beefier version, and between Stop-Start in the City and Cylinder-Deactivation on the Highway, I can see 23-25 MPG in a 5L HEMI Pickup.

Every Manufacturer adds different "Quirks" to their Stop-Start Implementation.
The Jeep would Restart once Parked as you finally put the Transmission into Park (the Stop-Start Criteria was no longer Satisfied), which DID serve to remind the Driver to actually Turn-Off the Ignition. But when at an Intersection, the Engine was Running at-speed in the instant that it took to shift your Right Foot from the Brake to the Gas. No Complaint there...
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Re: Vehicles with stop & start system

#13

Post by Gordon »

My new Kia Soul has that feature, but you can turn it off. So far I'm leaving it on just because.....

Only down side I can see is wear and tear on the starter.
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Re: Vehicles with stop & start system

#14

Post by Ozypic »

Yea they must be a great starter motor, still if the warranty is good who cares. I would imagine the extra fuel saving would just be tied into the time spent in bumper to bumper traffic... My Kia Cerato doesn't do it... Phill
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Re: Vehicles with stop & start system

#15

Post by smeyer8015 »

Never driven a stop/start system car.

I have a true hybrid. Toyota Prius.
I'm averaging 58 MPG US. It does best in Spring and Fall. A little lower in the Summer when AC is needed. Winter is the worst since heat comes from the engine.
My best tank has been 62 MPG. Worst was a long two day trip on the interstate at 70 MPH. 53 MPG

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Re: Vehicles with stop & start system

#16

Post by Lola Bruce »

If you lease it its great. If you own it not so much. Big wear on started and parts. If it is a diesel the savings are so small that the saving in money are upside down to maintenance . I was a licensed master mechanic long ago. Nice feature on a hybrid.
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Re: Vehicles with stop & start system

#17

Post by Gordon »

Ozypic wrote: Tue Nov 17, 2020 9:22 pm Yea they must be a great starter motor, still if the warranty is good who cares. I would imagine the extra fuel saving would just be tied into the time spent in bumper to bumper traffic... My Kia Cerato doesn't do it... Phill
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Re: Vehicles with stop & start system

#18

Post by Richard »

I have this on my Alfa Giulietta and honestly I am not a fan of this , REAL fuel consumption gain is virtually 0! unless you drive in stop start traffic every day. On the Alfa/Fiat manual models it is engaged with the clutch pedal so when you stop the gearbox must be in neutral and, clutch out , engaging the clutch start the engine.
The starter motor is designed for this purpose and should be fine , however the battery is a special stop/start one and costs 3x the price of a regular one here in RSA, mine lasted 2 years.
Their is a sensor that monitors the battery and if not 100% stop/start is deactivated , which happens a lot if you dont drive it everyday (like me)
The system can be deactivated manually after starting , but the default is always on ,so once its restarted you need to deactivate it again.
The consumption at idle is .5l/hr so unless you sit in a massive traffic jam I dont see how it can save much fuel.
Also if the AC is on then when the car stops it is also switched off , so not great in hot countries like here
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Re: Vehicles with stop & start system

#19

Post by Butterfly Maiden »

Gabrielle, we bought a new Hyundai i20 last year which has that feature. This was the first time we'd had a vehicle like that and it took some getting used to.

The salesman said it did save fuel, although I can't remember any figures that he may have quoted.

At first I thought I'd stalled the engine when we'd come to a stop in traffic, until I remembered the salesman's pitch about it, and I saw the green warning indicator on the instrument panel that it was currently active.

We have a choice though. There is a button that can be pressed to deactivate it.

However, even the small amount of fuel it saves, plus the benefit to the environment, can only be a good thing, so we leave it switched on.
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Re: Vehicles with stop & start system

#20

Post by Tim456 »

I’ve driven rental cars with this feature and couldn’t disable it fast enough. With a rental car it is more just a matter of personal preference. I stay in gear ready to go on my bike at stop lights so maybe it is carryover from that.

As far as wear and tear is concerned there are really only two outcomes. The first is you are going to wear out a standard starter and battery faster. The second is you paid a premium for a more robust starter and battery. Of course this would be buried in the purchase price. You may be able to get a ballpark by comparing the cost of replacement parts with a model year that doesn’t have this feature. You will have to do some quick math based on the fuel savings and miles (err km) driven per year to see how much you are actually netting.

Also worth noting I have gotten somewhere around 90mpg on a ninjette by keeping the revs low for the entire tank. Always an option! :D
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