I know that D gives no regenerative braking whereas selecting B does. However, when the car is slowing in B, the braking effect being obvious, are the brakes applied or is the deceleration governed by the regenerative process?

It will use the motor to slow the car to a low speed then from a very slow speed the hydraulic brakes will then kick in to bring the car to a stop.

 

same way if you had to do an emergency stop the electric motor has the ability to completely lock the wheels as they are so powerful, but lack the control of abs, so hydraulic braking would be used only for this 

Passat GTE doesn't stop in b mode. Gets to walking pace and keeps going.

Interesting that the superb stops. I wonder if there is some coding that can be done to make the Passat do the same.

Edited 22 February, 20224 yr by MarkyG82

18 minutes ago, ApertureS said:

It will use the motor to slow the car to a low speed then from a very slow speed the hydraulic brakes will then kick in to bring the car to a stop.

 

same way if you had to do an emergency stop the electric motor has the ability to completely lock the wheels as they are so powerful, but lack the control of abs, so hydraulic braking would be used only for this 

So would I be right in thinking that allowing the car to slow in B mode prevents brake pad wear because the brakes are only applied at very low speeds? For example if slowing from 60 to 40 for a bend B mode will use motor braking only, the discs coming in only if I need to apply the brake pedal for extra braking effect? 

 

I've been driving for nearly 50 years and it's taking me a while to adapt to almost one pedal driving! 

In theory yes.

 

In practice like me with an EV and hardly ever touching the brake pedal other than to come to a dead stop the brake discs are a rusty red mess and will need replacing soon as will the hardly ever used brake pads.

 

MY Stellantis Group crap discs.    VW Group / Skoda are doing something right with Drum Brakes on the rear of EV's.

 

The e-Brake can not be pulled on to clean the rears and if just trying to run with the brakes on to clean them they are that good the car just stops even on a long steep hill.

No chance of giving it some accelerator and touching the brake pedal as i have only 1 foot and as it is the power is cut anyway with accelerator and brake.

So some fast driving and hard braking time and time again is the only way to clear the rust.

Edited 22 February, 20224 yr by roottoot

So it looks like it might be wise, every now and then, to put the drive in D and give it a few good, hard brakings (assuming I haven't got Johnny Boyracer 6 inches away from the rear bumper). 

I had a Passat GTE before the iV. At 4 years and 88k it was still on the original front pads and discs.

 

It needed new rears for the second MOT because the discs corroded through lack of use. I don't think occasionally mashing the brakes will be enough to prevent the same unfortunately

@Patenthow do you find b mode in the iV compared to the GTE?

With the gear lever in drive, tap it to the rear for B then again to reinstate D. 

@MarkyG82 I'd say it's pretty much identical between them both. It definitely doesn't bring it to a halt.

 

The interaction between regen and brakes is not as good in the superb compared to the GTE, the superb sometime lurches as you come to a stop and it can be disconcerting. Haven't worked out the cause or if it's just a problem with my own car.

Edited 23 February, 20224 yr by Patent

10 minutes ago, Patent said:

@MarkyG82 I'd say it's pretty much identical between them both. It definitely doesn't bring it to a halt.

 

The interaction between regen and brakes is not as good in the superb compared to the GTE, the superb sometime lurches as you come to a stop and it can be disconcerting. Haven't worked out the cause or if it's just a problem with my own car.

 

Good to know. I've heard others complaining about the lurch and after a chat with a trusted mechanic (I'm also an engineer so we get carried away) we came to the conclusion that it's the electric motor clutch disengaging and the car transferring to the mechanical brakes. I get it now and then under light braking.

That is how it feels. It's almost like hand-off happens at too high a speed.

 

ETA: what's common for me is the lurch happens (i.e. suddenly you're not decelerating any more) so you press the brake further, which then fires the ABS

Edited 23 February, 20224 yr by Patent

I rarely use B mode tbh I find it very tiresome having to keep rocking the throttle pedal, I prefer D mode and glide... I don't think B mode brings the car to a complete stop I'll have to try it out. 

The B mode seems to peter out at about 5-10 mph requiring the foot brake for a complete stop. 

 

I've become quite a fan of the auto hold function. Saves blinding the following car at traffic lights. And being able to switch it off when easing into tight spaces is very helpful. 

Edited 24 February, 20224 yr by Jerry57

@Jerry57 Does Autohold on your car not have the Brake Lights on?

 

If not that is not the usual with Skoda / VW Group cars in the last couple of years.

 

http://briskoda.net/forums/topic/497760-code-out-brake-lights-on-autohold

 

Edited 24 February, 20224 yr by roottoot

3 minutes ago, roottoot said:

@Jerry57 Does Autohold on your car not have the Brake Lights on?

 

If not that is not the usual with Skoda / VW Group cars in the last couple of years.

My brake lights stay on while on autohold, I need to manually apply the handbrake to get them to turn off. 

9 minutes ago, roottoot said:

@Jerry57 Does Autohold on your car not have the Brake Lights on?

 

 

 

Oh. I don't know! I shall check tonight. 

It'll definitely leave the lights on. Having sat behind another superb tonight, they're also blinding, so I'll make more of an effort in future to use the handbrake

Oh harrumph. I forget to check. 

 

Questions though: If handbrake on but car in drive does this a. Cause any wear or mechanical harm and b. Does the handbrake release automatically when accelerator pressed? 

 

I think you will be getting used to the fact that I'm new to all these aids. 

It'll release automatically when you press the accelerator.

 

The only time it won't automatically release is if you try to drive off with a door open, here you'll have to release it manually.

 

I don't know that it's going to cause any premature wear. I'm not even sure what system these cars use. I think it's a small  motor on each side that winds a pad onto the disc? Hopefully someone will be along with the information!

My GTE pulls on the handbrake if the engine is running. That is rare due to the hybrid nature of the car so not really a problem. On occasion I have put it into N which takes the pressure off. Just remember to re-engage drive before pulling away.