There is no definitive answer to this question as it depends on a number of factors, such as the make and model of your car, your driving style, and the conditions you typically drive in. However, here are a few general guidelines that may help you decide when to use 2 in your car:
-If you have a manual transmission, you should use 2 when starting from a stop on a steep hill. This will help prevent your car from rolling backwards.
-If you have an automatic transmission, you can use 2 when starting from a stop on any type of terrain. This will help prevent your car from slipping or lurching forward.
-You can also use 2 when driving in slippery conditions, such as ice or snow. This lower gear will help give your tires more traction.
-If you're ever unsure whether to use 2 or not, err on the side of caution and go with the lower gear.