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I’ve deactivated my stop/start via obd11, so can’t confirm this. Do vw cars say how long you’ve spent with the motor off each trip/forever? Mazda does.
When I used it on my work run in the mazda, I’d spend about 4mins out of the 60min round trip with the engine off. My car (and most 4cyls) used about .7-1.0 litres per hour(aircon dependant), when idling. That worked out to about $24 of fuel saved a year.
There likely is a small bit of wasted fuel between the engine kicking over and reaching idle rpm, but I don’t know the numbers, so I’ll ignore it.
A standard battery for a modern 2 litre 4cyl diesel is circa $200.
The battery for the Mazda 6 is $650($400 for a cheapie via RAA)
So I’d need to make sure the battery lasted about 4-6yrs to break even.
Again, I’m ignoring extra wear and tear on the engine(Mazda day to not use engine hard after each restart- so a bit of oil drains away each time) engine mounts (the Mazda shock violently each start up- with good mounts) and starter motor...
Also, you are always delayed when taking off, due to engine start, wait for gears to engage fully, plus take off slow(due to earlier instructions to be gentle when taking off after a shutdown)
I’ve deactivated my stop/start via obd11, so can’t confirm this. Do vw cars say how long you’ve spent with the motor off each trip/forever? Mazda does.
When I used it on my work run in the mazda, I’d spend about 4mins out of the 60min round trip with the engine off. My car (and most 4cyls) used about .7-1.0 litres per hour(aircon dependant), when idling. That worked out to about $24 of fuel saved a year.
There likely is a small bit of wasted fuel between the engine kicking over and reaching idle rpm, but I don’t know the numbers, so I’ll ignore it.
A standard battery for a modern 2 litre 4cyl diesel is circa $200.
The battery for the Mazda 6 is $650($400 for a cheapie via RAA)
So I’d need to make sure the battery lasted about 4-6yrs to break even.
Again, I’m ignoring extra wear and tear on the engine(Mazda day to not use engine hard after each restart- so a bit of oil drains away each time) engine mounts (the Mazda shock violently each start up- with good mounts) and starter motor...
Also, you are always delayed when taking off, due to engine start, wait for gears to engage fully, plus take off slow(due to earlier instructions to be gentle when taking off after a shutdown)
10000000% not worth the hassle.
Lot of lack of understanding here Mazda use the position where the engine stops to fire it up again I believe unlike VW which use the starter You wont get a Tig battery for $200 petrol or diesel.If you are familiar with where you are driving you can anticipate the lights and fire the engine up in plenty of time.
If not you can still do it as I did in the Passat by lifting my foot off the brake just far enough to fire up the engine but not far enough to let the car move or engage the clutches
Its all about emissions rather than economy anyway. The cars are fairly economical and the tiny % saved by stop start is hardly worth worrying about in the scheme of things.
If you have to watch costs so much you need to get 12 years out of a battery you should have bought a pushbike
2021 Kamiq LE 110 , Moon White, BV cameras F & B
Mamba Ebike to replace Tiguan
The stop start won’t save you enough money to cover the difference between std battery and agm battery even if it last you 4years and you won’t save the planet either.
If you have the AGM battery fitted not the EFB and you look after it, it can last you 10years if looked after a bit. That’s worth more and you will save the resources as well.
One of the problems with the batteries is that since they're generally designed to run in cold climates, they fit additional insulation around the battery to keep it warm (battery capacity goes through the floor under cold enough conditions). However, where I am, it never gets that cold, and the hot temperature gives the battery extra cranking capacity at the expense of its service life.
The mechanic who replaced my Tiguan battery (first one failed just under 3 years old, was replaced under warranty) pulled the thermal insulation from the battery. A mate of mine with a Wolfsburg Golf had RACQ come out and do the same thing when they replaced the battery.
That said, replacement AGM on my Tiguan was quoted at around $350, so its possible to not have to pay $600. If its under warranty I'd be pushing it back to the dealer, regardless of 3 year or 5 year warranty.
One of the problems with the batteries is that since they're generally designed to run in cold climates, they fit additional insulation around the battery to keep it warm (battery capacity goes through the floor under cold enough conditions). However, where I am, it never gets that cold, and the hot temperature gives the battery extra cranking capacity at the expense of its service life.
The mechanic who replaced my Tiguan battery (first one failed just under 3 years old, was replaced under warranty) pulled the thermal insulation from the battery. A mate of mine with a Wolfsburg Golf had RACQ come out and do the same thing when they replaced the battery.
That said, replacement AGM on my Tiguan was quoted at around $350, so its possible to not have to pay $600. If its under warranty I'd be pushing it back to the dealer, regardless of 3 year or 5 year warranty.
There’s no harm from the battery insulation, it may actually shield the battery from the under the bonnet heat generated by engine. Our 2010 Tiguan std battery was almost 9 years old and still starting ok, when I’ve replaced it, had a double layer insulation on it.
My non VW SUV lasted 6 years with no S/S functionality.
9 years would have to be a record. I have never had a car battery last that long, especially in an SUV.
Our Polo only used for short shopping trips and 4 trips of 100k a year was new Jan 2011 and still has original battery and starts first kick
In contrast in winter in NZ in an XF falcon taxi I had 2 that lasted 3 months only and they were huge tractor batteries. Heated rear windows killed them
2021 Kamiq LE 110 , Moon White, BV cameras F & B
Mamba Ebike to replace Tiguan
Hillbilly, Mazda petrol engines use spark to help initiate cranking, the diesels don’t. My car was a diesel. Also there is still a short time where a bit more fuel is used to increase revs and overcome inertia/friction forces, before an engine is idling efficiently.
It’s also No-ones place to tell another, whether they should or shouldn’t care about something. Please refrain from ever communicating to me your thoughts on my purchasing decisions. It’s just not the place for it.
Please do feel free to correct me- if you see something I’ve said is absolutely wrong. I enjoy learning and improving my understanding of topics. As a previous Mazda employee and vehicle user I am very aware of the systems used (for 2008 to 2018 models)- both advertised and actual. I’m sure you’re aware of the important difference between the two- in many aspects of life.
Hillbilly, Mazda petrol engines use spark to help initiate cranking. As a previous Mazda employee and vehicle user I am very aware of the systems used (for 2008 to 2018 models)- both advertised and actual.
Is Mazda using STD battery if their system in order to restart doesn’t need to crank the engine using starter motor and battery? Or do they use AGM or EFB battery and why’s that?
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