Half Of 2021 Chevrolet Models Offer Automatic Stop-Start16
In a bid to eke out every last bit of efficiency possible from its internal combustion engines, General Motors is outfitting a swath of new models with automatic stop-start. In fact, half of Chevrolet’s model range equips the feature for the 2021 model year.
Some of the latest Chevy models to equip automatic stop-start include the all-new 2021 Chevy Trailblazer crossover, as well as the next-generation 2021 Chevy Tahoe and 2021 Chevy Suburban. All told, eight of the 16 2021 model-year Chevrolet models offer automatic stop-start. Compare that to the 2020 model year, wherein just five of the 15 Chevy models on offer came with the system, or one-third.
|Chevrolet Bolt EV||N/A|
|Chevrolet Silverado 1500||A2|
|Chevrolet Silverado HD||-|
- S – Standard in all trim levels and powertrains.
- N/A – Not applicable.
- Not available with turbo 2.0L I4 LTG engine.
- Not available with 4.3L V6 LV3 and 5.3L V8 L82 engines.
Note that we included the Chevy Bolt EV in the model lineup above. However, given the Bolt EV is equipped with a fully electric powertrain, it cannot offer automatic stop-start.
For those who may be unaware, automatic stop-start is a feature that will automatically turn off the engine when the car comes to a stop, such as at a stoplight, while parked, or while sitting in heavy traffic. With the engine off, the vehicle conserves fuel, with upwards of six percent greater city fuel economy returns. Once the driver removes his or her foot from the brake, the engine will automatically start, enabling the vehicle to once again get underway.
While automatic stop-start can help to boost fuel efficiency on any model with an internal combustion engine, it has also been criticized by some as being disruptive and annoying, resulting in hesitation off the line and added vibrations in the cabin. As such, some models offer the ability to turn the feature off, including the 2020 Cadillac XT5.
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I guess I got lucky with my 2019 Buick,s auto stop Sport Back GS stopped working and the dealer has no idea why!?
Probably because the battery isn’t at 70% or higher, my terrain was doing the same thing until I charged the battery up.
Thank You I was thinking of the battery too! As long as it’s running well!
Auto start stop is for CAFE credits and doesn’t do didly squat for fuel economy.
It’s dangerous too – especially when you’re about to turn left in the intersection and your engine turns off.
Notapro looks like you are notable to search, why throw out lies jus to try and strengthen your view? It certainly does help with Fuel economy, they wouldn’t spend million of dollars on tech that doesn’t do anything for mpg. Many independent tests have shown anywhere from 5-8% gains in city mpg when using it, of course it all depends on the length of time stopped and the situation/weather but it is well know.
Un safe, come one. It starts in milliseconds, if you are pulling out in front of someone where that millisecond matter that is your fault for being idiotic on the road and pulling in front of someone. How about you try pulling out safely next time and it won’t be an issue? Unsafe, haha, come one that is you being unsafe…
Actually he is is part correct,
Yes it is only fine for Off cycle credits just as displacement on demand.
As for fuel savings someone in mid town NYC not moving in traffic may see a small gain. Now the average drive in the burbs would see little if any gains.
As for unsafe that is just a full lie. They are safe Just annoying.
Most all applications now have a disable button.
I’ll do some Google-ing for you then Commonsense.
A V6 burns about 600 mL of fuel PER HOUR of idle. Do the math. Maybe it has more to do with marketing by auto companies (and governments) than actual fuel economy?
are any of these systems driver controlled?
for example, i have a pretty good sense of how long i’ll be at a red light so can i press a button to stop the engine if i think i’ll probably be sitting there over 30 seconds?
I’ve learned how to modulate the brake pedal when coming to stoplights/signs. When coming to a stop where I don’t want the auto stop to engage I brake a little sooner and don’t depress the pedal all the way. When I’m at a red light that’s about to go green I let up on the brake halfway so the engine comes on while the car is still braked. For what it’s worth I have a 2018 Terrain.
that would be a great idea for gm especially with brake by wire. firm pressure : stop the engine. something a bit less : let it idle.
Of course, a handy button on the dash like the new trucks would be nice. GM should make that standard in all cars
I put my 2018 Traverse Premier into Neutral as I am approaching the stop light, then I put it back into Drive and it does not shut off, plus I don’t brake hard which usually makes it not shut off. This is the dumbest thing GM has ever done. Why didn’t they install a switch to let you shut this stupid thing off? Numerous stops and starts CANNOT be good on the starter, and it cannot save ANY fuel. I wonder how many starters have been replaced (out of warranty) because of this?
Turn the AC/heat on full blast and it won’t shut off the engine.
You are right about the A/C, temperature must be set to low or it still shuts off, but it does not work with the heat. Why should we have to subject ourselves to freezing cold to get the darned thing to keep running.
As a retired big 3 automotive engineer, I can accurately state to you that Stop/Start is put into vehicles for the CAFE credit. If there is a defeat switch on the dash to disable it only for the current ignition cycle, the automaker is allowed to score the credit. Actual fuel savings are marginal at best – creeping through city streets or backed up freeways (California?). It may save some fuel over the parasitic losses the system causes. Most driving it does not. Remember that running the starter requires electricity by burning fuel to turn the generator to recharge the battery and keeping the HVAC blower, radio, lights, and other items powered while the engine is off. Also, the automatic transmission pump works harder to build pressure in a hydraulic accumulator to keep the clutch packs engaged for a fast smooth start forward after the engine was off. Then there is the issue of additional wear and tear on the starter and battery cycling. We’ll have to wait 5-10 years to see the reliability performance of today’s vehicles with Stop/Start.