Not only that, many cars are using a technique that requires little starter motor power! They stop the engine right after an ignition cycle with piston near TDC and the combustion pressure is held until starting when it helps turn the engine to start. (Reminded of WWII engines that could be started with a large blank gun shell!) But I do chuckle about starter motor BS! Heck the 502 BB in my street rod is half the size of normal starters and has a 3:1 gear reduction. Lots of power and fits with my long tube headers. Tesla etc has motors that are much more powerful!!

In fact our 2021 BMW X5 SUV is the wife's 3rd. Stop/Start is so unobtrusive on all 3 we never shut it off. It also has a method of some small about of braking energy recovery (which wastes about 25% of all energy that gets to the rear wheels!) . It only turns on the alternator on when costing or braking. It has a 2nd AGM battery.

FWIW, Start Stop is so unobtrusive in the BMW with the sound system playing can't tell the engine is shut off. It starts as soon as your foot is off the brake BEFORE it's on the throttle. Don't hear a starter motor! Daughter in OH. who now has our 2018 BMW X5 SUV, travels ~45 miles to work and indicates that efficient BMW inline 6 (300 hp with it's twin turbochargers) is getting ~5 mpg better than her old similar size SUV! Yep that small amount of braking energy recovery of turning on the alternator ONLY when coasting and braking helps! The larger AMG battery supplies the large amount of electrical power used in todays cars! Yep it car be done right!

 

Not the same animal but just bought a Ram 2021 Limited Longhorn with the stop/start. After about a month of driving I happened to look at engine monitors at a stop light (long one) & noticed no RPM indicated. Wasn't sure my model had it since OM says, some models. Since, I have looked for it at times & it is ABSOLUTELY seamless & instantaneous. Still not sure it supports good engine health but then again I'm not a vehicle engineer.

 

Practically every car has it. It's suppose to save gas. I find that hard to believe though.

 

Gas savings is negligible for the owner, it’s intent is to bring up the average for the manufacturer.
It also cuts emissions from all those people just idling in drive-thrus and traffic.

 

Now I'm no Greenie BUT we do waste a lot of the energy in gasoline
Pic is a recent overview of where the energy in gasoline goes. Of the only 19% that gets to the rear wheels 5% of the 19% goes to braking = 26%!. 11% is wasted idling! We can do better!

F1 using hybrid and wasted turbo energy when not needed for increasing boost have doubled their energy efficiency. They no longer allow refueling! Reducing wasted energy idling and recovering some of wasted braking energy is Smart. Thinking EV's will solve the World's CO2 issue is Stupid IMO!

Combined China and India have ~8 times our population. IF they only had EV's with over 70% of their electric power produced with coal does little to help the World! Stupid to think we can solve the World's CO2 issues with EVs!

 

I would never buy a car with that terrible feature !

 

Even if the electricity comes from burning coal, an electric car is cleaner. https://www.forbes.com/sites/mikesco...h=21e049d32320

In addition, as the electricity becomes "greener" the BEV will become greener. You can never say that about an ICE vehicle.

 

Yep let me know when China and India stop using coal to produce electricity! It produces twice the pollution of clean natural gas! I won't be around and doubt you will be! We're pissing in the ocean. Better some just flatulate so they can deal with their feelings of being bad people! Yep sending my California family those for Christmas!

 

Not all of them. There are a lot of complaints and issues with the Jeep stop/start system and starters & batteries. It's very noticable in my wife's '20 GC & we turn it off as soon as we start the vehicle. We've also driven plenty of JL Wranglers with this feature & it's awful (I'm currently renting one). It's one of the reasons we decided to keep our '16 JKU vs upgrading to the JLU (that and the awful 8-speed transmission in the JL).

 

The first time my 2020 GMC Terrain did the start/stop, I thought I had been tapped from behind. GM also doesn't have any shut off switch for the system in the Terrain. The only work around is to put the vehicle in "D" and then next to that control press the "L" button and then hit the "+" button 9 times until the display in the IP shows L9. THEN it won't shut off at a light and will use all nine forward speeds.

 

I’m currently owning a JL and the stop start doesn’t bother me at all. The transmission is much smoother than my JK.
It was also on our other car and the car before that. C8 will be my first non stop start car in about 5 years

 

It’s interesting how perceptions vary. We had a brand new JLU in CO for a week and it was horrible, it couldn’t figure out which gear to be in going up & down the mountains, wouldn’t downshift when it should have, wouldn’t upshift when coasting so it sounded like the engine was about to blow, very jerky at low speeds, etc. Similarly, I’m in UT this week & the JL I have has a bit more mileage (30k) and same thing. It tries to get through 3 or 4 shifts before 30 mph, very jerky etc. my JKU is very smooth.

There’s no way the stop/start is going unnoticed on either the JL or the GC as one can clearly feel the vehicle shut off and then it shakes upon start up. Now whether that bothers someone or not is subjective. I have driven many other vehicles with the start/stop that were pretty unnoticeable, but the Jeeps aren’t one of them.

 

Reminds me of the first time I went for a test drive in a new '17 Grand Cherokee without the salesman. I wasn't aware of the start/stop feature & the salesman didn't mention it. He just handed me the fob & said take it for a ride. Needless to say the first time it engaged I was like.....wtf??? And continued to be baffled each time.
When I got back I told the salesman something is seriously wrong with this. He both laughed & apologized & explained the feature.
I did end up buying it, but do hate the feature. Fortunately it can be turned off & it's the first thing I do after starting the engine.
I hate it so much it likely would have been a deal breaker if it couldn't be turned off.

 

I find this odd for a couple reasons. My JK would full on vibrate if I held the brake while in gear. If I shifted to neutral it would smooth out. At low speeds it seemed like it couldn’t figure out what gear to be in. The JL felt like a huge upgrade. Maybe my JK tranny was messed up, Otherwise the JL improved everything I hated about my JK. I traded it under 36k miles.
People on Jeep forums are just as whiney as they are on Corvette forums, but the transmission isn’t one of the things they whine about. Overall it seems pretty well regarded.

Start Stop is noticeable, but no worse than solid front axles or all terrain tires. Stop start however does not impact driving in anyway. As soon as you lift your foot off the brake, the engine is back on before you can hit the gas. It’s so common now, I can hear pretty much every car at the intersection fire-up when the light turns green.

 

While I agree that China and India have to reduce their coal use, I disagree that is an excuse for us to do nothing. Climate change is real. Man is causing it. The ONLY hope is for ALL to do something. The United States needs to be the leader, not the follower. I agree, that if ALL do not cooperate it may be a lost cause. But if the United States does not do anything, it will be a lost cause. So there is NO hope if we do not do our part. Waiting for everyone else is not an option - nor leadership.
As a Californian, I can assure you that your relatives would not be interested in your "gift". I am sure you could find something better in South Carolina.

 

I can see it both ways. I agree that somebody has to make the first move, but I can also see that it’s not going to make a difference if the whole world doesn’t play by the same rules.
If we took it as seriously as we should we’d have to make some much bigger lifestyle changes such as outlawing sports cars in general and making everybody ride bikes and live closer to work. No more ordering cheap Chinese stuff from Amazon or buying imported foods or taking a long distance vacation. Doing a couple token gestures like making EV sports cars and putting stop start on gas engines is pretty negligible in terms of global emissions though they do help improve pollution locally.
Since nobody has agreed to any emissions agreements that actually disincentivize noncompliance, countries who blow it off would actually benefit from a much easier to develop economy and resulting power at the expense of everybody else. While we would commit to making more expensive more sustainable products, the products we’d actually buy would be the cheaper and more unsustainable products made in foreign countries who chose not to participate. It’s pretty much all of nothing otherwise you just shift the same carbon around to a different part of the planet while paying the largest emitters to do so.

 

It depends on your driving cycle. If it's a commuter car, spending lots of time in traffic and at traffic lights, the savings is real. If it spends it's life on the highway, then start / stop will have little effect.

 

Of all my car friends I have non of them want anything to do with Start Stop. But none of them own a Tesla.

 

Nor obviously a BMW X5 SUV. Wife has had 3 and Stop Start is done right. Can't tell it's stopped or when it starts with the sound system playing. Yep can be done just cost money- but not as much as a foolish EV.

 

The problem I have is Leading the Way has become a euphemism for Paying the Way. When you do things that drives up the cost of basic necessities then the poor are disproportionally impacted. Evidence of this can be observed with the working poor and homeless in California. Emissions reductions don't respect state borders and the contribution to climate change from California is miniscule.
I'm on board with efforts to reduce climate change but all countries need to do their fair share.