Should I Use The Parking Brake?

When It Makes Sense

• Good fit: Parking on a steep incline or decline. Engaging the parking brake helps prevent the vehicle from rolling if the transmission’s park gear fails or if the car is jostled, providing an extra layer of security.
• Good fit: Leaving the vehicle stationary for an extended period, such as overnight or during a long trip. Using the brake reduces stress on the transmission’s parking pawl, which can prolong its lifespan.

When You Should Avoid It

• Warning sign: Parking on a flat, level surface for a short duration. The parking pawl alone is typically sufficient, and adding the brake can be redundant and may lead to unnecessary wear.
• Warning sign: When the vehicle is still in motion or when the brake system is noticeably worn. Engaging the parking brake while the car is moving can lock the wheels and cause loss of control.

Pros and Cons

Pros

• Provides an extra safety barrier against unintended vehicle movement, especially on slopes.
• Reduces reliance on the transmission’s parking pawl, potentially extending transmission component life.

Cons

• Can cause unnecessary wear on the brake shoes or pads if used habitually on level ground.
• May lead to confusion or habit formation for drivers who forget to release the parking brake before driving, increasing the risk of stalling or reduced acceleration.

Decision Checklist

• Is the vehicle parked on a noticeable grade (e.g., > 2% slope) or for an extended period?
• Are the parking brake components in good working order, with sufficient tread and no signs of corrosion?
• Will engaging the brake interfere with any vehicle systems (e.g., electronic parking brakes that lock automatically)?

Alternatives to Consider

Instead of relying solely on the hand‑brake, you can: (1) shift the automatic transmission into “Park” and ensure the gear selector clicks firmly, (2) use wheel chocks on especially steep inclines, or (3) engage the electronic parking brake if your vehicle is equipped with one, as it often applies automatically on shutdown.

Final Recommendation

For most everyday parking on flat surfaces, the transmission’s “Park” position is adequate, and using the parking brake is optional. However, on steep grades or when leaving the car parked for many hours, engaging the parking brake adds a valuable safety margin. Always verify that your brake system is in good condition and follow the vehicle’s owner manual. For high‑stakes situations—such as commercial fleets or vehicles with known transmission issues—consult a qualified mechanic or automotive professional before establishing a routine.