General Motors wants to introduce 30 new all-electric vehicles by 2025, two-thirds of which are set to launch in North America. However, before General Motors can achieve its vision of zero emissions, the automaker is improving the efficiency of its existing internal combustion products with automatic stop-start. Critically, 75 percent of 2021 Buick models come equipped with the fuel-saving feature.
For now, U.S. buyers have four Buick models to choose from for the 2021 model year, three of which come with automatic stop-start. These include the Buick Enclave, the Buick Encore GX, and the Buick Envision. Meanwhile, the “regular” Buick Encore (or rather, the non-GX model) does not offer automatic stop-start.
- S – Standard with all trim levels and powertrains.
Looking over the other rest of the General Motors brand lineup, half of all 2021 Chevrolet models offer automatic-stop start, while four out of seven 2021 GMC models offer the feature. Meanwhile, every 2021 Cadillac model offers automatic stop start.
Interestingly, roughly 70 percent of all General Motors vehicles sold in the U.S. last year were equipped with the feature.
For those readers who may be unaware, vehicles equipped with automatic stop-start will turn off the engine when the vehicle is stopped, such as in traffic or at a stoplight. The engine remains off while the driver depresses the brake pedal, saving fuel in the process.
It’s estimated that automatic stop start will provide roughly six percent higher city fuel returns compared to similarly equipped vehicles without the feature.
Once the driver releases the brake pedal, the engine will restart.
Some owners have criticized the feature as being intrusive, and have even engineered workarounds to prevent the feature from working. What’s more, some models are equipped with the ability to turn the feature off, including the Cadillac XT5, as GM Authority covered previously.