What is D3 and D4 in a car

While D3 restricts itself to the first three gears (1, 2, and 3), D4 is restricted to the first four gears (gears 1, 2, 3, and 4). While you're driving, D4 helps your vehicle automatically choose a gear that's appropriate for your current acceleration and speed.

Should I drive in D3 or D4?

D3 is suitable for ascending or descending hills and is the best gear position for stop-and-go situations. D4 is more suitable for all conditions and has a higher speed than D3. The D3 may not be suitable for highway driving, but the D4 is suitable for both town and highway driving.

Should I drive in D3 or D4 or D5?

D3 gives you more power and increased engine braking. For faster acceleration when in D3, D4 or D5, you can get the transmission to automatically downshift by pushing the accelerator pedal to the floor. The transmission will shift down one or two gears, depending on your speed.

Should I drive in D or D3?

D3 is generally used for city driving, while D2 or L is generally used for off-road driving or when you need to drive through a steep road.

Is it OK to drive on D3?

You would only use D3 while going downhill with a load so you can use your brakes less. Your mileage would be worse since the engine is running at a higher rpm. Only if you did a lot of using D3 would it make any appreciable wear on your transmission. Save this answer.