Coasting and engine braking
#1
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Now that I've been driving my new 545i with Steptronic for a few days and getting used to the handling, I've noticed something that I'm curious about. It seems that when I let off the gas, such as approaching a red light or going down a hill, I feel the car slowing down rather than coasting like most conventional automatics. Is it using engine braking, and is this normal?
#3
I noticed that last week on some steep country roads, when going down a steep hill and braking, the car detected that I need braking help and started to kick down several gears.
#7
I notice that when I go down my long driveway with my 545i, I get a substantial amount of engine braking due to the fact that it stays in a very low gear. I don't have to press on the brake to slow down the car to get to the street. With my other cars (Acura and Toyota), they both move quite fast down the driveway and I have to brake to slow down the car. Because of the braking, going down the drive way is much slower with my 545i than with my other 2 cars. Somewhat objectionable but I can live with it. Once I get to the street and step on the gas, everything in OK.
On another note, I took the car on a trip up to San Luis Obispo last week on Highway 101. Outside of Santa Maria in the straight stretch between Santa Maria and Shell Beach, I was going about 80mph and then I floored it. I got to 120mph in a flash, then quickly braked to 80mph. Amazing how responsive the car was. No lag at all.
On another note, I took the car on a trip up to San Luis Obispo last week on Highway 101. Outside of Santa Maria in the straight stretch between Santa Maria and Shell Beach, I was going about 80mph and then I floored it. I got to 120mph in a flash, then quickly braked to 80mph. Amazing how responsive the car was. No lag at all.
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Originally Posted by Guest_Tonkiton' date='Apr 1 2004, 07:14 AM
I notice that when I go down my long driveway with my 545i, I get a substantial amount of engine braking due to the fact that it stays in a very low gear. I don't have to press on the brake to slow down the car to get to the street. With my other cars (Acura and Toyota), they both move quite fast down the driveway and I have to brake to slow down the car. Because of the braking, going down the drive way is much slower with my 545i than with my other 2 cars. Somewhat objectionable but I can live with it. Once I get to the street and step on the gas, everything in OK.
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